JP5545838B2 - Power control system - Google Patents

Description

  The present invention relates to a power control system.

  For electricity consumers such as ordinary households who mainly use low piezoelectric lamps, the electricity transaction contract with an electric power company is determined according to the capacity of the contract current, and the electric power according to the amount of electricity consumed by the consumer. A volume fee is calculated. Usually, the electricity charge paid by the consumer to the electric power company is the sum of the basic electricity charge and the electricity charge.

  In an electricity transaction contract with contract current, the capacity of the contract current becomes the maximum current that can be used by the customer, and if the value is exceeded even temporarily, the power supply to the current limiter is cut off, and power exceeding the contract current is used. I can't do it. For this reason, in general households that frequently use equipment that consumes a large amount of power (for example, air conditioners, heaters, dryers, dryers, irons, microwave ovens, toasters, electromagnetic cookers, etc.) In order not to cut off, it is necessary to leave a contract in the capacity of the contract current, and contract to a capacity higher than necessary, and the electric basic charge will be increased accordingly.

  On the other hand, there is also a contract type in which an electrical transaction contract with an electric power company receives high-voltage electricity in a lump by an administrator who manages transformer facilities and the like. In the electricity transaction contract with an electric power company using this high-voltage collective power reception, although it costs money to install and manage the transformer equipment, it is added according to the metered amount of electricity compared to the electricity transaction contract based on the general contract current. Electricity charges are very cheap. In addition, the basic electricity charge for high-voltage collective power reception is determined by the amount of power consumed within a predetermined time, unlike an electricity transaction contract with a contract current. Therefore, it is not necessary to make the contract higher than necessary.

  Conventionally, electricity transaction contracts by high-voltage collective power reception have been targeted at facilities that consume a lot of power, such as commercial buildings as commercial power and factories as high-voltage power. However, with the liberalization of electricity, it is possible to use inexpensive high-voltage power by considering a cluster such as an entire apartment house as one high-voltage facility, and the administrator collects power for condominiums etc., and each household of ordinary households In addition, collective power-receiving services that distribute power after transformation to low voltage are also increasing. However, the electricity transaction contract using high-voltage collective power reception is cheaper than the electricity charge, but the basic electricity charge is higher than the electricity transaction contract using the contract current. The issue is whether to lower the price and make an electricity transaction contract with an electric power company.

  In Patent Document 1, the maximum current capacity is grasped from the power usage tendency of each consumer, the capacity of contract current of each consumer is suppressed by setting a breaker whose current value can be changed, and surplus current generated thereby. An invention is disclosed in which the capacity of the contract current of the entire cluster is reduced by allocating to consumers who need it. This is to suppress the contract current capacity of each consumer, thereby reducing the contract current capacity of the entire cluster, and lowering the basic electricity charge between the manager and the electric utility.

  In Patent Literature 2, for various devices installed in a factory, in order to avoid exceeding the contract power, the power consumption amount for a predetermined time is predicted, and when the prediction exceeds the contract power, the priority is low. An invention for stopping the device is disclosed. This is to minimize the contract power by avoiding excess contract power and to reduce the basic electricity charge between the manager and the electric utility.

JP 2002-159138 A JP 7-274394 A

  However, in the invention described in Patent Document 1, the electric transaction contract by the low-voltage contract current between the electric power company and the consumer such as a general household is merely changed from the electric power company to the administrator of high-voltage power reception. Even if the customer temporarily uses electricity exceeding the contract current, the power supply is cut off. For this reason, in an ordinary household, an electric transaction contract with an administrator must always be set to a higher capacity, so that there is little effect of suppressing the contract current of each consumer. Furthermore, since the surplus current distributed by the invention described in Patent Document 1 is the current that is temporarily or continuously required in the first place, if a certain customer lowers the contract current, Since other customers only increase the contract current or remain surplus, the effect of suppressing the contract current of the entire cluster cannot be expected.

  The invention described in Patent Document 2 is a device installed in a factory, so that the state of all devices can be easily grasped. However, unlike a factory, the devices used are a wide variety of general household devices. It is difficult to grasp the state, and even if it is possible to grasp the state of power consumption for each consumer, if the operating state of the equipment to be stopped is unknown, the desired power consumption cannot be reduced. . Moreover, the application to general households is ambiguous because it is targeted at people, and there are many variations in the form of power consumption for each general household, and it is not theoretically applicable like factory equipment. Furthermore, when applied to ordinary households, not only the fairness of each consumer is impaired depending on how to determine the priority order to be stopped, but also there is a possibility that even daily life may be hindered.

  In addition, if a home network is constructed using information appliances incorporating digital communication technology, the status of individual devices in general households can be grasped and remotely controlled. Can be lowered. However, replacing existing equipment with information appliances and building a home network from existing equipment is expensive, and it still takes time to disseminate it to ordinary homes. Efficient use is desired.

  Furthermore, the need to strengthen and promote energy conservation is increasing as each and every employee increases their willingness to save energy, such as in response to increasing energy consumption and global warming.

  Therefore, the present invention has been made in view of the above-described problems, and distributes electricity received at a high voltage to a consumer such as a general household at low cost using existing equipment and facilities. The contract power is reduced to reduce the contract power of the entire cluster, and the basic power charge between the manager and the electric power company is reduced by avoiding excess contract power and minimizing the contract power. The challenge is to provide a system that contributes to energy conservation throughout society by raising awareness of energy conservation.

  In order to solve such a problem, a power control system according to claim 1 of the present invention is a power control system that reduces power consumption by stopping some of the electrical loads, and the power consumption is reduced. A server that predicts the level of power based on the amount of power used within a predetermined time and transmits a prediction result, and an electrical load that is in accordance with the level of power consumption transmitted from the server and that is permitted in advance. And a terminal that outputs a stop command.

  The power control system according to claim 2 of the present invention is characterized in that an electric load that is instructed to stop and that does not correspond to a level is operated according to a fluctuation in prediction.

  A power control system according to claim 3 of the present invention is a power control system that reduces power consumption by stopping some of the electrical loads, and uses the power consumption within a predetermined time. And calculating the amount of power to be distributed based on the prediction, the server transmitting the power amount, and the electric loads in the order ranked in advance until the amount of power transmitted from the server is greater than or equal to And a terminal for outputting an instruction to stop the determined electrical load.

  According to a fourth aspect of the present invention, there is provided a power control system that operates an electrical load other than the determined electrical load, which is an electrical load commanded to stop in accordance with a change in prediction.

  The power control system according to claim 5 of the present invention is characterized in that a remote control adapter is attached to the electric load, and the electric load is stopped when the terminal instructs the remote control adapter.

  According to a sixth aspect of the present invention, there is provided a power control system comprising: a sum of differences in power consumption at the terminal before and after instructing to stop the electric load within a predetermined period; and the entire power control system within a predetermined period. The electricity charge at the terminal is discounted according to the ratio of the reduced total power consumption.

  A power control system according to claim 7 of the present invention is a power control system that reduces power consumption by cutting off some of the electric circuits, and uses the level of power consumption within a predetermined time. A server that predicts based on the amount of power and transmits a prediction result, and a terminal that outputs an interruption command to a previously permitted electric circuit that is an electric circuit according to the level of power consumption transmitted from the server With.

  An electric power control system according to an eighth aspect of the present invention is characterized in that an electric circuit that is instructed to shut off and returns an electric circuit that does not correspond to a level in accordance with a fluctuation in prediction.

  A power control system according to a ninth aspect of the present invention is a power control system that reduces power consumption by cutting off some of the electrical wirings, wherein the power consumption is used within a predetermined time. And calculating the amount of power to be distributed based on the prediction, the server transmitting the amount of power, and the electrical wiring in the order ranked in advance until the amount of power transmitted from the server is greater than or equal to A terminal for determining an electric wiring to be cut off by adding the power capacities and outputting a command to cut off the determined electric wiring.

  A power control system according to a tenth aspect of the present invention is characterized in that, in response to prediction fluctuation, the electrical wiring instructed to shut off is restored to an electrical wiring other than the determined electrical wiring.

  Moreover, the electric power control system which concerns on Claim 11 of this invention incorporates a relay in the said electric circuit or the said electric wiring, and interrupts the said electric circuit or the said electric wiring by the said terminal commanding the said relay. It is characterized by making it.

  According to a twelfth aspect of the present invention, there is provided a power control system comprising: a sum of a difference in power consumption in the terminal before and after the electrical circuit within a predetermined period or the instruction to shut off the electrical wiring; The electric charge at the terminal is discounted in accordance with the ratio of the reduced total power consumption of the entire power control system.

  A power control system according to claim 13 of the present invention is a power control system that adjusts the power consumption of a cluster composed of a plurality of consumers, and when the consumers in the cluster do not pay an electricity bill. The power supply is forcibly cut off by controlling a main breaker installed in the consumer.

  Moreover, the power control system according to claim 14 of the present invention is a power control system that adjusts the power consumption of a cluster composed of a plurality of consumers, and in order to concentrate power in a necessary place when a disaster occurs, The main breaker installed in the consumer is controlled to forcibly cut off the power supply.

It is a block diagram showing the outline of a power control system.

  Embodiments of the present invention will be described below with reference to the drawings.

  FIG. 1 is a block diagram showing an outline of a power control system according to an embodiment of the present invention. In FIG. 1, a high-voltage collective power receiving facility 210 managed by an administrator receives electricity from an electric power company and forms a cluster after the received electricity remains at high voltage or is converted to low voltage by a transformer 212. Distribute power to each customer. Electricity is received based on contract power (hereinafter referred to as cluster contract power) contracted between the administrator of the high-voltage collective power receiving facility 210 and the electric power company. The electricity fee paid by the administrator to the electric power company is the sum of the electricity basic fee determined according to the cluster contract power and the electricity amount fee calculated according to the amount of electricity consumed in the cluster. Cluster contract power is the maximum power that can be consumed in the cluster, and if this contract power is consumed, power is paid to the power company for excess contract power or automatically. Cluster power will increase.

Normally, the cluster contract power is calculated from the power consumption amount for 30 minutes, and therefore the maximum power amount that can be consumed in the cluster (hereinafter referred to as cluster maximum power amount) can be expressed as cluster contract power × 0.5 hours. For example, when the cluster contract power is contracted at 100 kW, the maximum cluster power amount for 30 minutes is 50 kWh. Also, assuming that the start time every 30 minutes is 0 seconds, the elapsed time from the start time is T seconds (0 ≦ T ≦ 1800), and the total power consumption in the cluster when T seconds have elapsed is W (kWh). Then
(W / T) × 1800 <maximum cluster energy (1)
Satisfying this is a certain standard that does not exceed the cluster contract power. However, unlike an electricity transaction contract based on contract current, the maximum cluster energy is the sum of the energy consumed in the cluster for 30 minutes, so if the energy consumed for 30 minutes does not exceed the maximum cluster energy, This standard may be exceeded. For example, when the cluster maximum power amount is 50 kWh, even if the power amount of 50 kWh is consumed for 10 minutes from the start time, the cluster contract power will not be exceeded unless power is consumed for the remaining 20 minutes.

  In addition, electricity may be generated by providing the power generation facility 150 in the high-voltage collective power receiving facility 210 or the cluster distribution system, and the generated electricity may be distributed to each consumer. In such a case, when the power demand exceeding the cluster contract power is predicted, power may be supplied from the power generation facility 150, or surplus electricity may be sold due to power generation.

  The electricity distributed to each consumer is used by each consumer via the main breaker 100 and the sub-breaker 101. The main breaker 100 is a device that cuts off / returns the supply of all electric power of each consumer. For the purpose of safety such as seizure of wiring due to excessive power, or the consumers in the cluster do not pay the electricity bill. In other cases, the purpose is to cut off the power supply of the customer or to cut off the power supply of other customers in order to concentrate the power at a necessary place such as a hospital in the event of a disaster. It may be installed when it is necessary to forcibly cut off / return all power supply of each consumer. The sub breaker 101 is a device that cuts off and restores power in a certain area where a number of wires for each customer room, outlet, and lighting are bundled, and is intended for safety such as seizure of wiring due to excess power. However, as will be described later, the sub-breaker 101 may be controlled for the purpose of shutting off / returning the power supply of the load in a certain area of the consumer.

  Electricity distributed to each consumer in the cluster is received based on contract power contracted between the administrator of the high-voltage collective power receiving facility 210 and each consumer (hereinafter referred to as customer contract power). The electricity charge paid by the consumer to the manager is the sum of the basic electricity charge determined according to the consumer contract power and the electricity charge calculated according to the amount of electricity consumed by the consumer. The customer contract power is the maximum power that can be consumed by each customer. If this contract power is exceeded and power is consumed, the manager and each customer are free to negotiate some measures. It may be. For example, the electrical equipment (hereinafter referred to as the energy saving target electric load 120) that is preset to stop with the administrator and the electrical wiring that is preset to be shut off with the administrator (hereinafter referred to as energy saving). The target electric circuit 140) may be cut off, or all the power supply may be cut off, or a higher contract surcharge may be paid to the administrator for the contract surplus power.

Since the cluster contract power is determined based on the sum of the customer contract power of each customer in the cluster, the customer contract power is determined by the power consumption for 30 minutes from the same start time in synchronization with the cluster contract power. calculate. In this case, the maximum amount of power that can be consumed by the consumer for 30 minutes (hereinafter referred to as the maximum amount of consumer power) is the customer contract power x 0.5 hours. Further, the start time every 30 minutes is set to 0 seconds, the elapsed time from the start time is T seconds (0 ≦ T ≦ 1800), and the total power consumption of the consumer when T seconds have elapsed is W ′ (kWh) Then,
(W ′ / T) × 1800 <maximum consumer electric energy (2)
Satisfying this is a certain standard that does not exceed customer contract power. However, unlike the electricity transaction contract based on the contract current, the customer's maximum electric energy is the sum of the electric energy that can be consumed by the customer in 30 minutes, and therefore the electric energy consumed for 30 minutes must not exceed the customer's maximum electric energy. You may temporarily exceed this standard.

  In this way, by making the electricity transaction contract between the administrator and the consumer such as a general household into contract power instead of contract current, it is possible to temporarily exceed the contract power and use it, leaving a margin. As a result, the contracted power of each consumer is reduced, thereby reducing the contracted power of the entire cluster and lowering the basic electricity bill between the manager and the electric utility. Can do.

  In FIG. 1, an energy control system (energy control system: hereinafter referred to as “ECS”) 130 is installed in each customer, the high-voltage collective power receiving facility 210, and the power generation facility 150, and the server 160 via the ECS network 161. Unidirectionally or bidirectionally communicates with a terminal device or device. For various registrations and control settings, the ECS 130 may include an interface and a storage device that holds information such as each customer.

  Communication between the server 160 and the ECS 130 is performed via the Internet, a telephone line, a wired / wireless line, and a power line. However, the present invention is not limited thereto, and it is sufficient that at least each customer can receive an instruction from the server 160 in the present invention, and the high-voltage collective power receiving facility 210 only needs to be able to transmit the received / distributed power amount to the server 160. As long as the amount of generated power can be transmitted to the server 160, it is sufficient. Therefore, if this requirement is satisfied, the ECS 130 installed in each place does not need to have the same function, and the terminal device can be controlled without using the ECS 130, or the terminal device does not need to be controlled. The ECS 130 may be replaced with another device, or the ECS 130 may be omitted.

  The communication from the ECS 130 of each customer to the server 160 includes, for example, weather information such as weather and temperature at each customer, and information on the environment of each customer such as emergency information such as earthquakes and fires (hereinafter referred to as “customers”). Environmental information), information on the power usage status of each consumer (hereinafter referred to as customer power information), the level of energy saving target (hereinafter referred to as energy saving level) arbitrarily set by each customer, and the energy load 120 or energy saving target electricity Information for which correspondence with the circuit 140 is set (hereinafter referred to as energy saving practice information), the power capacity of each energy saving target electric load 120 (hereinafter referred to as energy saving target electric load capacity) in each consumer, and each energy saving target in each consumer You may transmit the electric power capacity | capacitance (henceforth energy saving object electric circuit capacity | capacitance) interrupted | blocked by the electric circuit 140. FIG. From this information, for example, from the customer environment information, the server 160 obtains the state of temperature change in each customer as weather information, so that this information can be used for prediction of power demand, If emergency information that informs of a fire is transmitted to the server 160, it is possible to cut off the power supply to the customer in some cases. In addition, from the consumer power information, the server 160 can obtain a tendency of each customer's power usage on the day of the week or time, and this information can also be used for prediction of power demand.

  The server 160 stops the energy load 120 to be saved by each consumer based on the information received from each consumer and the power demand prediction, the received / distributed power amount of the high-voltage collective power receiving facility 210, the generated power amount of the power generating facility 150, and the like. An instruction for controlling operation or shut-off / return of the electric circuit 140 for energy saving may be transmitted to the ECS 130 of each consumer.

  The communication from the ECS 130 of the high-voltage collective power receiving facility 210 to the server 160 is, for example, information on the amount of power received from an electric power company or the amount of power distributed to each customer (hereinafter referred to as power transaction information), or the high-voltage collective power receiving facility. Information regarding failure or malfunction of the device 210 may be transmitted to the server 160. The server 160 remotely receives instructions received from the high-voltage collective power receiving facility 210, power demand forecasts, instructions for controlling the amount of power received or distributed based on the amount of power generated by the power generation facility 150, etc. The instruction may be transmitted to the ECS 130 of the high-voltage collective power receiving facility 210 as long as it can be dealt with by the control.

  Communication from the ECS 130 of the power generation facility 150 to the server 160 is, for example, information on the amount of power generated by the power generation facility 150, the amount of power distributed to each customer, the amount of power sold, or information on a failure or malfunction of the equipment of the power generation facility 150. Or the like may be transmitted to the server 160. The server 160 instructs to control power generation and distribution, the amount of generated power and the sale of power based on the information received from the power generation facility 150, the power demand prediction, the amount of power received by the high-voltage collective power receiving facility 210, etc. If the problem can be dealt with by remote control, the instruction may be transmitted to the ECS 130 of the power generation facility 150.

  In FIG. 1, the server 160 monitors the power consumption in the cluster from the consumer power information and the power transaction information, and predicts the power demand, and also based on the prediction and information from the ECS 130 installed in each place. Instructs control such as stopping / operation of the energy saving target electric load 120 or shutting down / returning of the energy saving target electric circuit 140. For various registrations and control settings, the server 160 may include an interface and a storage device that holds information such as each customer.

The prediction of power demand used in the cluster (hereinafter referred to as cluster demand prediction) is the left side (W / T) of Equation (1), which is a constant criterion that does not exceed the cluster contract power in order to prevent exceeding the maximum cluster power usage. ) × 1800 (3)
Calculate from For example, if T is 600 seconds and W is 10 kWh, the 30-minute cluster demand prediction is 30 kWh.

In addition, the cluster demand prediction may be calculated by assigning a weight to the equation (3) based on information such as the power usage record and weather conditions of each consumer. If the weights are α, β, γ, etc., the cluster demand forecast is
(W / T) × 1800 × α × β × γ × (4)
It can be expressed. For example, based on the information that the temperature during sunny summer days is rising from the customer environment information, an increase in the use of air conditioners is assumed. Therefore, 0.9 may be assigned to the weight β based on the information that the amount of electricity consumed is decreasing from 13:00 to 17:00 on weekdays of consumers in the cluster. In this case, if the cluster demand prediction without weights is 30 kWh, the weights α and β are added to be 32.4 kWh.

  Although the cluster demand prediction can be calculated in real time, it may be performed every few seconds or every few minutes.

The server 160 may calculate a power demand prediction (hereinafter referred to as a consumer demand prediction) used by a consumer by a method similar to the cluster demand prediction. In this case, the consumer demand forecast is calculated based on the left side (W ′ / T) × 1800 of equation (2), which is a constant reference that does not exceed the customer contract power (5).
Is calculated from

In addition, the consumer demand prediction in the case where weights are added based on information such as the power usage results and weather conditions of each consumer, the weights are α ′, β ′, γ ′.
(W ′ / T) × 1800 × α ′ × β ′ × γ ′ × (6)
It can be expressed.

  The calculated consumer demand prediction is transmitted from the server 160 to the ECS 130 of each consumer, and each consumer can select the energy saving level of the energy saving practice information with reference to this consumer demand prediction. In addition, when predicting an excess of consumer contract power based on a consumer demand forecast, the server 160 or the ECS 130 of each consumer may automatically change the energy saving level to a preset level. Good. Note that the consumer demand prediction may be calculated from the consumer power information and the power transaction information by the ECS 130 of each consumer instead of the server 160.

  In response to an instruction from the server 160, the ECS 130 of each customer stops / operates the energy saving target electric load 120 or shuts down / returns the energy saving target electric circuit 140.

  The stop / operation of the energy saving target electric load 120 may be configured such that the ECS 130 controls each individual energy saving target electric load 120 by attaching a remote control adapter in the control base of the energy saving target electric load 120, for example. . In this case, it is necessary to attach a remote control adapter to each individual energy saving target electric load 120. However, the remote control adapter is inexpensive and can be easily attached to the existing energy saving target electric load 120. In addition, it is possible to construct a configuration that enables control of the electric load 120 to be saved by each consumer.

  For example, by incorporating a relay 110 such as a latching relay in the sub-breaker 101, the ECS 130 is connected to the energy-saving target electric circuit 140 for a plurality of wires bundled in the sub-breaker 101. The energy saving target electric load 120 may be controlled by shutting off / returning. Further, by incorporating the relay 110 into a plurality of wires bundled by the sub-breaker 101, the ECS 130 controls the energy-saving target electric load 120 by shutting off and returning the energy-saving target electric circuit 140 to each of the wires. It may be configured. In the case of this configuration, compared to incorporating the relay 110 in the sub breaker 101 described above, it is necessary to incorporate the relay 110 for each wiring, which is costly, but finer control of the electric load 120 to be saved is possible. It becomes. To cut off / return the electric circuit 140 to be energy-saving, it is possible to turn on / off the electric circuit 140 to be controlled by incorporating several inexpensive relays 110, and to relay to the existing sub-breaker 101 or existing wiring equipment. Since 110 can be easily incorporated, it is possible to construct a configuration that allows each consumer to control the electric load 120 to be energy-saving simply and at low cost.

  Table 1 is an example showing the correspondence between the excess level of cluster contract power and the cluster demand forecast ratio. The cluster demand prediction ratio corresponding to the excess level in Table 1 is the ratio of cluster demand prediction to the cluster maximum power amount (cluster demand prediction / cluster maximum power amount). For example, when the cluster contract power is 100 kW and the cluster power demand prediction is 55 kWh, the cluster demand prediction ratio is 110%, so the excess level corresponding to it is 3. If the cluster demand prediction ratio exceeds 100%, the cluster contract power will be exceeded, so the excess level is a criterion for the server 160 to instruct the energy saving target electric load 120 to stop or the energy saving target electric circuit 140 to be cut off. . In Table 1, levels 1 to 3 in which the cluster demand prediction ratio exceeds 100% are dangerous levels exceeding the cluster contract power, and level 4 is a safe level not exceeding the cluster contract power.

  Table 2 shows an example of the correspondence between the energy saving level of the energy saving practice information selected by the consumer and the energy saving target electric load 120 to be stopped. The total energy load targeted for energy saving in Table 2 represents the sum of the energy load targeted for energy saving at each energy saving level. The energy load capacity ratio for energy saving indicates the ratio of the total energy load for energy saving to the customer contracted power (total energy load for energy saving / customer contracted power). The target electrical load capacity ratio is calculated. For example, when the energy saving target electric load capacities of the air conditioner 1 and the lighting 1 are 0.8 kWh and 0.1 kWh, respectively, the energy saving target electric load total capacity is 0.9 kWh, so the energy saving target electric load capacity ratio is 18%. The energy saving level is 3 because it is between 10 and 20% of 2. In Table 2, when the customer selects the energy saving level 1 to 3, the energy saving target electric load 120 is stopped, and the reduction of the power consumption of the entire cluster is shared, and the energy saving target electric load 120 is desired to be stopped. The energy saving level 4 can be selected for a non-consumer as a level that does not share the reduction in power consumption. The energy saving level selected by the consumer may be changed as needed depending on the electricity usage status of each consumer, and may be updated at regular intervals.

  Table 3 shows an example of the correspondence between the energy saving level of the energy saving practice information selected by the consumer and the energy saving target electric circuit 140 to be cut off, and the correspondence of the energy saving target electric load 120 to be stopped when the energy saving target electric circuit 140 is cut off. It is. The total electric circuit capacity for energy saving in Table 3 represents the sum of the electric circuit capacity for energy saving at each energy saving level. The ratio of electric circuit capacity for energy saving indicates the ratio of the total capacity of electric circuit for energy saving with respect to consumer contracted power (total capacity of electric circuit for energy saving / contract power for customer). The target electric circuit capacity ratio is calculated. The energy saving target electric circuit a shows a configuration in which the relay 110 is incorporated in the sub-breaker 101, and the energy saving target electric circuit b shows a configuration in which the relay 110 is incorporated in individual wires bundled by the sub breaker 101. For example, if the energy saving target electric circuit capacities of the energy saving target electric circuits a1 and 2 (energy saving target electric circuits b1-1, 1-2, and 2-1) are 0.9 kWh and 0.7 kWh, respectively, Is 1.6 kWh, so that the energy saving target electric circuit capacity ratio is 32%, which is between 10 and 20% in Table 3, and the energy saving level is 2. In Table 3, when the customer selects the energy saving level 1 to 3, the energy saving target electric circuit 140 is cut off, and the reduction of the power consumption of the entire cluster is shared, and the energy saving target electric circuit 140 is desired to be cut off. The energy saving level 4 can be selected for a non-consumer as a level that does not share the reduction in power consumption. The energy saving level selected by the consumer may be changed as needed depending on the electricity usage status of each consumer, and may be updated at regular intervals.

  The server 160 instructs the ECS 130 of the customer to stop / operate the energy saving target electric load 120 and to shut down / return the energy saving target electric circuit 140 periodically or in correspondence with the cluster demand prediction ratio in Table 1. It may be when the excess level to be changed fluctuates. The value of each excess level in Table 1 and the value of each energy saving level in Tables 2 and 3 are treated as the same value, and the electric load 120 for energy saving corresponding to the energy saving level in Tables 2 and 3 according to the fluctuation of the excess level in Table 1 Is stopped / operated, and the electric circuit 140 for energy saving is shut off / returned. By sharing this with each customer in the cluster, it is possible to reduce the power consumption of the entire cluster and prevent the cluster contract power from being exceeded.

  In practice, the server 160 simply sends the value of the excess level in Table 1 to each customer at once, and the ECS 130 of the customer selects the energy saving level selected by the customer, The energy saving target electric load 120 of the energy saving level of Table 2 corresponding to the value received from the server 160 and the energy saving target electric circuit 140 of Table 3 are stopped and cut off, and the energy load 120 or energy saving not corresponding to the received excess level is saved. It is only necessary to operate / return the target electric circuit 140. For example, when the excess level in Table 1 is shifted from 4 to 3 due to the fluctuation of the excess level, the server 160 transmits 3 after the fluctuation of the excess level to each customer. When a certain consumer has selected the energy saving level 2, the ECS 130 of the customer who has received the lower excess level value 3 stops the air conditioner 1 and the lighting 1 corresponding to the energy saving level value 3 in Table 2. . Subsequently, the ECS 130 of the customer who has received the indication of the excess level value 2 from the server 160 when the excess level in Table 1 is shifted from 3 to 2, the air conditioner 1 corresponding to the energy saving level value 2 in Table 2 In addition to the illumination 1, the heater and the electronic pot are also stopped. However, even if the excess level in Table 1 is shifted to 1 which is higher than the energy saving level 2 selected by the consumer and the ECS 130 of the consumer receives an indication of the excess level value 1 from the server 160, this demand When the house selects the energy saving level 2, the energy saving target electric load 120 higher than the energy saving level 2 is not stopped. Thereafter, the ECS 130 of the customer who has received the indication of the excess level value 3 from the server 160 after the excess level in Table 1 is shifted from 2 to 3, the heater not corresponding to the energy saving level value 3 in Table 2 Operate the electronic pot. Subsequently, when the excess level in Table 1 is shifted from 3 to 4, there is no energy saving target electric load 120 corresponding to the energy saving level value 4 in Table 2, so that the air conditioner 1 and the lighting 1 are also operated. On the other hand, when another customer has selected the energy saving level 4, even if the level 160 is received from the server 160, the energy saving target electric load 120 is not stopped.

  In addition, when a customer in the cluster does not use the electrical load 120 to be saved or selects an energy saving level that does not share the reduction in power consumption, even if a specific level instruction is received from the server 160 This consumer cannot reduce the amount of power as expected, and the entire cluster cannot reduce the amount of power exceeding the target cluster contract power. In consideration of such a case, the energy saving target electric load capacity ratio in Table 2 and the energy saving target electric circuit capacity ratio in Table 3 may be set larger than the cluster demand prediction ratio in Table 1. Specifically, since the cluster demand forecast ratio corresponding to excess level 3 in Table 1 is set to 101 to 110%, theoretically, if the power amount for 1 to 10% is reduced as a whole cluster Exceeding cluster contract power can be prevented. However, the power consumption in consumers such as ordinary households is not always regular, and it is difficult to clearly grasp the usage state of each energy saving target electric load 120, and the power consumption of consumers in the cluster is as expected. Can not be reduced. Therefore, the ratio of the electric load capacity to be saved in Table 2 and the ratio of the electric circuit capacity to be saved in Table 3 is set to a large ratio of the amount of electric power to be reduced to 10 to 20%. By anticipating the case where the load 120 is not used or when the energy saving level that does not share the reduction of the power consumption is selected in advance, and other consumers bear a large amount of the power to be reduced accordingly The entire cluster is designed to reduce the amount of power that exceeds the target cluster contract power.

  In this way, the power consumption that can be reduced by each consumer by controlling several of the devices that exist in many consumers such as general households at an energy saving level at a certain power consumption rate and controlling one or more at a time. Can be easily grasped, and the level of stopping and shutting off from the equipment selected by each consumer can be appropriately selected and changed as needed by the customer himself / herself. It is possible to respond flexibly to the ambiguity of consumers such as ordinary households who cannot do so.

  When it is predicted that the cluster contract power will be exceeded, the power consumption at that time already exceeds the cluster contract power. Therefore, if the cluster demand forecast ratio is maintained at 100%, for example, by stopping the electrical load 120 to be saved, the power consumption for 30 minutes will exceed the maximum cluster power, so there is a margin in the cluster demand forecast ratio. May be set. In Table 1, the level 3 for predicting excess cluster contract power is set to 101% or more. For example, setting it to 91% or more provides a margin of 10% and power consumption for 30 minutes. It is possible to prevent exceeding the maximum cluster energy.

  In addition, if the electric energy saving target load 120 is frequently stopped or operated, the electric energy may be consumed or the consumer may feel annoyed. Operation or the like later may be performed, or the frequency of cluster demand prediction may be adjusted to reduce the number of instructions from the server 160 so that stop / operation or the like does not occur frequently.

  Table 4 shows an example of the energy saving target electric load capacity of the energy saving target electric load 120 and the relationship between the rank and the energy saving level. The ranks in Table 4 are orders for stopping and operating the energy saving target electrical load 120. By giving a rank to the energy saving target electrical load 120, finer control than the control based on the level is possible.

  For the energy load 120 to be stopped / operated based on the rank, a target value is set for the cluster demand forecast ratio, and when the cluster demand forecast ratio exceeds the set target value, the amount of power that has been reduced can be reduced. It is done by each customer sharing. For example, when the customer has selected energy saving level 2, if the server 160 receives an instruction to stop the energy load 120 to be saved for 1.5 kWh, the ECS 130 of the customer is at the energy saving level 2 or lower and The energy saving target electric load capacity is added until the power load capacity is 1.5 kWh or more in order from the rank, and the energy saving target electric load 120 to be stopped is determined. From the top ranks in Table 4, the total of the three energy saving target electric load capacities of the air conditioner 1, the lighting 1, and the heater is 1.5 kWh, so that these three are stopped, and the further energy saving target electric load 120 is not stopped. . Subsequently, when receiving an instruction to stop the energy saving target electric load 120 for 0.5 kWh from the server 160, the ECS 130 of the consumer has the energy saving target electric load capacity of the air conditioner 1 having a higher rank of 0.8 kWh. Since it becomes 5 kWh or more, only the air conditioner 1 is kept stopped, and the other lighting 1 and heater are operated.

Further, the amount of power to be shared by each consumer is calculated according to the number of consumers in the cluster and the level selected by each customer from the amount of power to be reduced in the entire cluster. The amount of power that should be reduced for the entire cluster is the value that exceeds the set target value multiplied by the cluster contract power.
(Cluster demand forecast ratio-target value) x Cluster contract power (7)
It can be expressed. For example, if the cluster contract power is 100 kW and the target value of the cluster demand forecast ratio is set to 100%, the ratio when the cluster demand forecast ratio reaches 105% is 5%, so the entire cluster should be reduced. The amount of power is 5 kWh. When this 5 kWh is uniformly distributed to each consumer, assuming that there are 10 consumers in the cluster, the amount of power shared by one consumer is calculated as 0.5 kWh. Alternatively, the amount of power to be shared may be changed according to the energy saving level selected by each consumer. For example, when 5 kWh is allocated to each customer, the energy saving level that shares the reduction of power consumption within the cluster If the energy saving level 2 is 5 and the energy saving level 3 is 5 for the customers who have selected 1 to 3, the energy saving level 2 customer is 1.5 times the amount of reduction compared to the energy saving level 3 customer. When sharing, the amount of electric power shared by one consumer is calculated as 0.6 kWh for a customer who has selected energy saving level 2 and 0.4 kWh for a customer who has selected energy saving level 3.

  Tables 5 and 6 are examples showing the correspondence between the energy saving target electric circuit 140 and the block / restoration target area or wiring, the energy saving target electric load 120, and the relationship between the rank and the energy saving level. The area to be cut off / restored in Table 5 indicates an area where the power supply is cut off / returned by opening / closing the electric circuit a to be saved by the relay 110 in the configuration incorporating the electric circuit to be saved / energy-saving. The restoration target wiring indicates a wiring that cuts off / returns the power supply by opening / closing the energy saving target electric circuit b by the relay 110 in a configuration in which the energy saving target electric circuit b is incorporated. As with the above-described stop / operation of the energy-saving target electric load 120, when the cluster demand prediction ratio exceeds the set target value, the power-saving target electric circuit 140 is shut off / returned based on the rank. It is done by each customer sharing the volume reduction.

  However, unlike the case where the individual energy saving target electric loads 120 are stopped and operated, the control by the energy saving target electric circuit 140 is performed by the sub breaker 101 and all of the energy saving target electric loads 120 ahead of the wiring of the sub breaker 101. Shut off / return. For example, in the case of the configuration of the electric circuit a to be energy-saving shown in Table 5, when one of the sub breakers 101 bundles the wiring to the outlet of the bedroom and the wiring for the lighting of the bedroom, it is 0.5 kWh from the server 160. If an instruction to stop the energy saving target electric load 120 is given, the instruction requirement is satisfied if only the air conditioner 1 is stopped, but only the air conditioner 1 cannot be controlled. In this case, the energy saving target electric circuit a1 that communicates with the air conditioner 1 also bundles the wiring of the lighting 1. Therefore, by cutting off the energy saving target electric circuit a1, not only the air conditioner 1 connected to the bedroom outlet but also the bedroom. The power supply of the illumination 1 is also cut off.

  On the other hand, in the case of the configuration of the electric circuit b for energy saving shown in Table 6, the power supply can be shut off / returned to each wiring bundled by the sub-breaker 101, so that the wiring to the bedroom outlet and the bedroom lighting is possible. Can be controlled for each of the air conditioner 1 and the lighting 1. However, when a plurality of energy saving target electric loads 120 are connected to the ends of the wirings to be controlled by the energy saving target electric circuit b, it is not possible to control each of them. For example, when the electric circuit 2b targeted for energy saving is connected to one outlet in the kitchen, if the heater and the electronic pot are connected to the outlet, the electric circuit 2b targeted for energy saving even if the rank is higher than the electric pot. By shutting off, power supply to both the heater and the electronic pot connected to the outlet is cut off.

  Note that if the customers in the cluster do not use the energy saving target electric load 120 or select an energy saving level that does not share the reduction in power consumption, the expected power consumption cannot be reduced. The cluster demand forecast ratio cannot be lowered to the target value. In consideration of such a case, the server 160 may instruct the energy saving target electrical load 120 to be stopped several times in order to bring the cluster demand prediction ratio closer to the target value. Specifically, the amount of power to be reduced for the entire cluster is obtained from the ratio exceeding the target value after instructing the reduction of the power amount from the server 160, and the power shared by the customer is obtained by the equation (7). Calculate the amount. The server 160 instructs again the amount of power obtained by adding the amount of power and the amount of power shared by each customer instructed by the server 160 as the amount of power to be reduced by each customer. By repeating this, the cluster demand prediction ratio can be brought close to the target value. For example, when the cluster contract power is 100 kW and the ratio exceeding the target value of the cluster demand forecast ratio is 5%, if there are 10 consumers in the cluster, the amount of power to be shared by each consumer is 0.5 kWh. It becomes. If the ratio exceeding the target value after the server 160 instructs each customer to reduce the amount of electric power of 0.5 kWh is 1%, each customer further reduces the electric energy by 1%. to share the load. Since the amount of power shared by each customer when the ratio exceeding the target value is 1% is 0.1 kWh, the instruction from the server 160 for the second time is 0 added to the amount of power for the first instruction. .6 kWh. In addition, when the ratio exceeding the target value after this instruction becomes 0.2%, the electric energy shared by each customer is calculated to further reduce this 0.2% by 2 Add to the electric energy of the second instruction. By repeating this, the cluster demand prediction ratio can be brought close to the target value.

  The consumer selects the energy saving target electric load 120 and the energy saving target electric circuit 140 shown in Tables 2 to 6, determines the level and rank for each, and the manager selects the server 160 or the ECS 130 of each consumer. The level and rank are registered, but the customer appropriately changes the combination of the energy saving target electric load 120 and the energy saving target electric circuit 140 and the level and rank registered from the ECS 130 or a personal computer or a mobile phone via the Internet. You may be able to do it. However, when there are a large number of registered electrical loads 120 for energy saving and electrical circuits 140 for energy saving, there are an infinite number of combinations, so the server 160 or the ECS 130 of each consumer can select an appropriate combination, for example. As described above, a combination of the energy saving target electric load 120 and the energy saving target electric circuit 140 may be simulated to display some options and assist the customer.

  Table 7 is an example showing a configuration in which a variable is provided in the level so that the value of the excess level associated with the cluster demand prediction ratio in Table 1 can be changed. In Table 1, the correspondence between the excess level and the cluster demand forecast ratio is fixed when the cluster contract power exceeds, but Table 7 shows that the excess level can be changed arbitrarily by changing the value of the excess level. And the cluster demand forecast ratio can be changed. As a result, the correspondence between the energy saving level and the energy saving target electric load 120 to be stopped in Table 2 and the energy saving target electric circuit 140 to be cut off in Table 3 is adjusted according to the season, day of the week, time zone, etc. regardless of excess of the cluster contract power. It is possible to reduce the power consumption of the entire cluster by lowering the excess level as necessary, thereby contributing to energy saving for the whole society. For example, when the variable x in Table 7 is 0, the energy saving levels 4 to 6 are safe levels that do not exceed the cluster contract power, but if the variable x is set to minus 1, it has been set as a safe level until then. Since the energy saving level 4 is a level 3 at which there is a risk of exceeding the cluster contract power, when the corresponding cluster demand prediction ratio becomes 91% or more, the server 160 instructs to stop the electric load 120 to be saved. Actually, if the cluster demand forecast ratio is about 91%, the risk of exceeding the cluster contract power is negligible, but in this way, as the overall power consumption of the cluster increases, the energy load 120 to be saved is stopped. By doing so, the power consumption of the whole cluster can be suppressed, and it can contribute to the energy saving of the whole society.

  On the other hand, when electricity generated by the power generation facility 150 is used, a positive value may be entered in the variable x in consideration of the amount of power generation.

  When all or part of the energy saving target electric load 120 corresponding to the energy saving level selected by each consumer in the cluster is not used, or all or some of the consumers in the cluster consume power. When the energy saving level that does not share the amount reduction is selected, even if the server 160 stops the energy saving target electric load 120, shuts off the energy saving target electric circuit 140, or instructs the energy saving amount, the entire cluster consumption There is a case where the amount of electric power hardly changes. At this time, since the cluster demand prediction does not change, the fluctuation in the cluster demand prediction ratio in Table 1 does not occur, so the server 160 continues to issue the same instruction. In this way, even if the server 160 continues to issue the same instruction, the cluster demand prediction ratio does not change, and if the desired power consumption cannot be reduced, for example, the same instruction number or the same instruction is continuously issued. Alternatively, x in the level column of Table 7 may be subtracted by 1 after a predetermined time has elapsed. By reducing the excess level with respect to the cluster demand prediction ratio, it is possible to increase the energy saving target electric load 120 to be stopped and reduce the power consumption of the entire cluster.

  The electricity bill paid by the consumer to the manager may be discounted according to the amount of power to be reduced shared by each consumer. The more you contribute to the reduction of power consumption, the more you will save energy for each customer in the cluster by discounting the electricity bill, reducing the power consumption of the entire cluster and contributing to the energy saving of the whole society.

  The calculation of the amount of power shared by each consumer is completed. The instruction to stop or shut off the difference between the customer power information immediately before stop or shut off is first instructed from the server 160 and the customer power information after each order is finished. Until it does, you may make it calculate for every fluctuation | variation of a cluster demand forecast. For example, after the customer power information of a customer who has selected energy saving level 1 in Tables 2 and 3 is 4 kW, the excess level is shifted from 4 to 1, and the server 160 gives an instruction of level 1 When the customer power information of 1.2 kW becomes 1.2 kW, the difference from 4 kW immediately before the first stop is instructed is 2.8 kW. Therefore, if this instruction continues for 15 minutes, this customer will receive 0.7 kWh. The amount of power is shared. Subsequently, when the excess level is shifted from 1 to 3 and the consumer power information after receiving the level 3 instruction from the server 160 becomes 3.1 kW, the difference from 4 kW before the first stop is instructed. Therefore, if this instruction is continued for 20 minutes, the customer has shared the amount of power for 0.3 kWh. Next, when the level is shifted from 3 to 4, the stop or shut-off instruction from the server 160 is terminated, so that the calculation of the electric energy shared by the consumer is also terminated. In the case of this example, this consumer shares the amount of power for 1 kWh in 35 minutes from when the server 160 is first instructed to stop or shut down to the end.

  In addition, the discount on electricity charges is based on the value obtained by dividing the amount of electricity reduced in the entire cluster within the specified period by the number of consumers in the cluster, and the electricity price is discounted according to the amount of electricity exceeding the reference value. It may be. Alternatively, the discount rate may be calculated from the reference value and the amount of power shared by each consumer. For example, assuming that the amount of power reduced in the entire cluster in one month is 100 kWh and the number of consumers in the cluster is 20, the amount of power that one consumer should share on average is 5 kWh. With this 5 kWh as a reference value, if the amount of power shared by a certain customer for a month is 8 kWh, it is 3 kWh higher than the reference value, so the amount multiplied by a predetermined value is discounted from the electricity bill. May be. On the contrary, for customers who do not share at all, it is possible to add an electricity bill corresponding to the reference value of 5 kWh multiplied by a predetermined value. Or, if the amount of power shared by a certain customer for one month is 10 kWh, it means that the amount of power is double the standard value, so the discount rate is set to 2 and the electricity charge of this customer is discounted by 2 You may do it.

100 Main breaker 101 Sub breaker 110 Relay 120 Energy saving target electric load 130 ECS
140 Electricity saving target electric circuit 150 Power generation facility 160 Server 161 ECS network 210 High voltage collective power reception facility 212 Transformer

Claims (12)

A power control system that reduces power consumption by stopping some of the electrical loads,
A server that predicts the level of power consumption based on the amount of power used within a predetermined time and transmits a prediction result;
A terminal that outputs an instruction to stop an electric load that is an electric load according to the level of power consumption transmitted from the server and is permitted in advance;
A high-voltage collective power receiving facility that receives electricity from an electric power company and distributes the electricity to each customer constituting the cluster;
An energy control system installed in the high-voltage collective power receiving facility and each consumer, and communicating with the server via a network;
With
Send customer power information, energy saving practice information, energy saving target electric circuit capacity from the customer energy control system to the server,
A power control system for transmitting power transaction information from the energy control system of the high-voltage power receiving facility to a server .   The power control system according to claim 1, wherein an electric load that is instructed to be stopped and that does not correspond to a level is operated according to a change in prediction. A power control system that reduces power consumption by stopping some of the electrical loads,
A server that predicts the power consumption amount based on the power consumption amount used within a predetermined time and calculates the power amount to be distributed based on the prediction, and transmits the power amount;
A terminal that determines an electrical load to be stopped by adding the power capacity of the electrical load in an order ranked in advance until the amount of power transmitted from the server is equal to or higher, and outputs a command to stop the determined electrical load; ,
A high-voltage collective power receiving facility that receives electricity from an electric power company and distributes the electricity to each customer constituting the cluster;
An energy control system installed in the high-voltage collective power receiving facility and each consumer, and communicating with the server via a network;
With
Send customer power information, energy saving practice information, energy saving target electric circuit capacity from the customer energy control system to the server,
A power control system for transmitting power transaction information from the energy control system of the high-voltage power receiving facility to a server .   The power control system according to claim 3, wherein an electric load other than the determined electric load is operated in accordance with a prediction variation.   The power control system according to any one of claims 1 to 4, wherein a remote control adapter is attached to the electric load, and the electric load is stopped when the terminal instructs the remote control adapter.   According to the ratio between the total difference in power consumption in the terminal before and after commanding the stop of the electrical load within a predetermined period and the total reduction in power consumption of the entire power control system within the predetermined period The power control system according to any one of claims 1 to 5, wherein an electricity charge at a terminal is discounted. A power control system that reduces power consumption by interrupting some of the electrical circuits,
A server that predicts the level of power consumption based on the amount of power used within a predetermined time and transmits a prediction result;
A terminal that outputs a shut-off command to a previously permitted electric circuit that is an electric circuit according to the level of power consumption transmitted from the server;
A high-voltage collective power receiving facility that receives electricity from an electric power company and distributes the electricity to each customer constituting the cluster;
An energy control system installed in the high-voltage collective power receiving facility and each consumer, and communicating with the server via a network;
With
Send customer power information, energy saving practice information, energy saving target electric circuit capacity from the customer energy control system to the server,
A power control system for transmitting power transaction information from the energy control system of the high-voltage power receiving facility to a server .   8. The electric power control system according to claim 7, wherein an electric circuit that is instructed to be cut off and that does not correspond to a level is restored according to a fluctuation in prediction. A power control system that reduces power consumption by interrupting some of the electrical wiring,
A server that predicts the power consumption amount based on the power consumption amount used within a predetermined time and calculates the power amount to be distributed based on the prediction, and transmits the power amount;
A terminal for determining an electric wiring to be cut off by adding a power capacity of the electric wiring in an order ranked in advance until the amount of electric power transmitted from the server is equal to or higher, and outputting a command to cut off the determined electric wiring; ,
A high-voltage collective power receiving facility that receives electricity from an electric power company and distributes the electricity to each customer constituting the cluster;
An energy control system installed in the high-voltage collective power receiving facility and each consumer, and communicating with the server via a network;
With
Send customer power information, energy saving practice information, energy saving target electric circuit capacity from the customer energy control system to the server,
A power control system for transmitting power transaction information from the energy control system of the high-voltage power receiving facility to a server .   The power control system according to claim 9, wherein the electric wiring that is instructed to be cut off is returned in response to a prediction fluctuation, and the electric wiring other than the determined electric wiring is restored.   The relay according to any one of claims 7 to 10, wherein a relay is incorporated in the electrical circuit or the electrical wiring, and the terminal instructs the relay to interrupt the electrical circuit or the electrical wiring. The power control system described.   A sum of differences in power consumption in the terminal before and after commanding to shut off the electrical circuit or electrical wiring in a predetermined period, and a total of reduced power consumption in the entire power control system in a predetermined period; The power control system according to any one of claims 7 to 11, wherein an electricity charge at the terminal is discounted according to a ratio of the power consumption.

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