JPWO2016056051A1 - Diagnostic device, diagnostic method, and program - Google Patents

Abstract

The power consumption data acquisition unit (301) obtains an actual measurement value of power consumption when an electrical device having a plurality of operation modes with different power consumptions is operating in any one of the plurality of operation modes. get. The environmental data acquisition unit (303) acquires environmental data indicating the environment of the place where the electrical device is installed. The estimation unit (305) calculates an estimated value of power consumption when the electric device operates in another operation mode different from the operation mode of the electric device when the environmental data is acquired based on the acquired environmental data. To do. The ratio calculation unit (307) calculates a ratio between the acquired actual measurement value of power consumption and the estimated value of power consumption calculated. The effect calculation unit (308) calculates a power saving effect due to the electric device operating in another operation mode based on the calculated ratio.

Description

  The present invention relates to a diagnostic apparatus, a diagnostic method, and a program suitable for improving the reliability of calculation of a power saving effect.

  There are electrical devices that can operate in either the first mode or the second mode, which consumes less power than the first mode. For example, in an air conditioning system that has a normal mode and an energy saving mode that consumes less power than the normal mode, the time period when the electricity rate is set relatively high, the time period when the overall power consumption of the building is large, etc. In addition, there is one that suppresses the electricity bill and the amount of power consumption by switching from the normal mode to the energy saving mode by an instruction from a user or a predetermined algorithm.

  When calculating the cost-effectiveness of introducing a system that can be operated in energy-saving mode to save power, how much power consumption can be actually reduced or how much power consumption is likely to be reduced? It is necessary to estimate quantitatively. Generally, environmental conditions such as room temperature distribution and weather are different for each electrical device or for each date and time, so there is a possibility that the power saving effect cannot be estimated accurately.

  Patent Document 1 discloses an energy management system that calculates a predicted energy consumption amount in the future from a past energy consumption amount by an air conditioner and calculates a reduction rate of energy consumption during energy saving control with respect to a reference time. .

JP 2014-006011 A

  However, since the difference between the estimated power consumption and the actual measurement varies depending on various conditions such as the outside air temperature and the usage status of the electrical equipment, the estimated value and the actual measurement are simply compared as in the past. However, the accuracy is not sufficient, and the calculation of the power saving effect may be unreliable.

  The present invention has been made under the above circumstances, and an object thereof is to provide a diagnostic device, a diagnostic method, and a program suitable for improving the reliability of calculation of the power saving effect.

In order to achieve the above object, a diagnostic apparatus according to the present invention provides:
A power consumption data acquisition unit that acquires an actual value of power consumption when an electrical device having a plurality of operation modes with different power consumptions is operating in any one of the plurality of operation modes;
An environmental data acquisition unit that acquires environmental data indicating an environment of a place where the electrical device is installed;
An estimation unit that calculates an estimated value of power consumption when the electrical device operates in another operation mode different from the operation mode of the electrical device when the environment data is acquired based on the acquired environment data. When,
A ratio calculation unit for calculating a ratio between the actual measurement value of the acquired power consumption and the estimated value of the calculated power consumption;
Based on the calculated ratio, an effect calculation unit that calculates a power saving effect due to the electric device operating in another operation mode;
Is provided.

  The reliability to the calculation of the power saving effect can be improved.

It is a figure which shows the structure of the air conditioning system containing a diagnostic apparatus. It is a figure which shows the hardware constitutions of a diagnostic apparatus. It is a figure which shows the functional structure of a diagnostic apparatus. It is an example of the power consumption data memorize | stored in a power consumption data storage part. It is an example of the environmental data memorize | stored in an environmental data memory | storage part. It is an example of the guess data memorize | stored in a guess data storage part. It is a flowchart for demonstrating a diagnostic process. It is an example of the data which shows the standard value of power consumption. It is an example of historical data. It is an example of a display of a diagnostic result.

  In FIG. 1, the structure of the air conditioning system 100 containing the diagnostic apparatus 1 which concerns on this embodiment is shown.

  The diagnostic device 1 is connected to the communication network 2 and acquires from the power measuring device 6 actual measured values of power consumption by the outdoor unit 3 and the indoor unit 4 (4A and 4B in FIG. 1). In addition, the diagnostic device 1 obtains information about the outdoor unit 3 and the indoor unit 4 such as a rated power value and a model number necessary for calculating an estimated value of the power consumption from the outdoor unit 3 and the indoor unit 4 or Obtained from a server (not shown) on the Internet.

  The outdoor unit 3 and the indoor unit 4 cooperate to adjust the temperature and humidity of the air in the building.

  Outside the room, there are X outdoor units 3 (X is an integer greater than or equal to 1. In this embodiment, X = 1). The outdoor unit 3 is fixedly installed, for example, at various places such as a rooftop of a building or outside a window.

  The outdoor unit 3 switches the recirculation direction of the refrigerant compressed by the compressor to perform either the heating operation cycle or the cooling operation cycle, and evaporates or condenses the refrigerant to exchange heat with air, thereby heating or Cool down.

  In the room, there are Y indoor units 4 (Y is an integer of 1 or more. In this embodiment, Y = 2). In FIG. 1, there are two indoor units 4A and 4B. The indoor unit 4 is fixedly installed on a ceiling portion of a room, for example.

  As the refrigerant passes through the pipe, the indoor unit 4 exchanges heat with the surrounding air, and cools or heats the refrigerant. During cooling, the indoor unit 4 cools the air by evaporating the refrigerant and absorbing heat from the air around the heat exchanger. Further, during heating, the indoor unit 4 heats the air by condensing the refrigerant and releasing heat to the air around the heat exchanger.

  Further, the indoor unit 4 repeatedly measures the temperature and humidity of the surrounding air, and transmits the latest measurement result to the diagnostic device 1. The timing for measuring the temperature and humidity and the timing for transmitting the measurement result are arbitrary. In the present embodiment, the indoor unit 4 transmits the measurement result to the diagnostic device 1 when requested to transmit the measurement result from the diagnostic device 1. However, the indoor unit 4 may measure the temperature and humidity in the room at a predetermined time interval (for example, every 5 minutes) and transmit the sequential measurement results to the diagnostic apparatus 1.

  In addition, a sensor that measures the temperature and humidity in the room may be provided separately from the indoor unit 4, and the sensor may measure the temperature and humidity and transmit the measurement result to the diagnostic apparatus 1.

  The installation location of the outdoor unit 3 and the indoor unit 4 is not limited by the present invention. For example, the outdoor unit 3 and the indoor unit 4 may be installed in a detached house, a building in which a house or office is located, an underground building, or the like. Further, the number of the outdoor units 3 and the indoor units 4 is arbitrary.

  In the present embodiment, the diagnostic apparatus 1 is installed outside the room to be air-conditioned, but may be installed in the room. The diagnostic apparatus 1 may communicate with the outdoor unit 3 and the indoor unit 4 using a LAN (Local Area Network), a WAN (Wide Area Network), a dedicated line, the Internet, or the like.

  The remote controller 5 (one in each of the indoor units 4A and 4B in FIG. 1, two remote controllers 5A and 5B in total) performs near field communication with the indoor unit 4 using infrared rays or the like. Is possible. The user can use the remote controller 5 to input power on / off, target temperature setting, air flow rate setting, operation mode (cooling, heating, dehumidification, air blowing, etc.) settings, and the like.

  The air conditioning system 100 may include various sensors such as a blower fan and a temperature sensor in addition to the diagnostic device 1, the outdoor unit 3, the indoor unit 4, and the remote controller 5. The diagnostic device 1 may be capable of transmitting and receiving data with a blower fan, a sensor, and the like via the communication network 2.

  The diagnostic device 1 not only diagnoses the power saving effect by diagnostic processing described later, but also controls the operation of the air conditioning system 100.

  There are two types of operation modes in the air conditioning system 100: a normal mode and an energy saving mode. In the energy saving mode, power consumption can be suppressed to a lower level than in the normal mode. In the present embodiment, switching of the operation mode is controlled by the diagnostic device 1.

  The normal mode is also referred to as a first mode, and the energy saving mode is also referred to as a second mode. The power consumption during operation in the second mode is less than the power consumption during operation in the first mode.

  In the cooling operation in which the temperature in the room in which the plurality of indoor units 4 is installed is adjusted to T1, the target temperature T1 is set simultaneously for all the indoor units 4 in the normal mode. On the other hand, in the energy saving mode, the target temperature of some of the indoor units 4 is set to T2 higher than T1, and the indoor units 4 whose target temperature is set higher are switched by rotation.

  For example, when there are a first indoor unit, a second indoor unit, a third indoor unit, a fourth indoor unit, and a fifth indoor unit in a room, only the target temperature of the first indoor unit is first set. Is set to T2 (> T1), and the target temperatures of the remaining second to fifth indoor units are set to T1. After a predetermined time has elapsed, the target temperature of the first indoor unit is changed from T2 to T1, and instead, the target temperature of the second indoor unit is changed from T1 to T2. The indoor units whose target temperature is set to T2 are changed in order, such as the first indoor unit, the second indoor unit, the third indoor unit, the fourth indoor unit, and the fifth indoor unit. After the fifth indoor unit is selected, the first indoor unit is selected again, and the same process is repeated.

  The energy saving mode can be executed not only in the cooling operation but also in the heating operation. During heating, in the normal mode, the target temperature T1 is set for all the indoor units 4 simultaneously. On the other hand, in the energy saving mode, the target temperature of some of the indoor units 4 is set to T3 lower than T1, and the indoor units 4 whose target temperature is set lower are switched by rotation.

  In addition, the specific control method of the outdoor unit 3 and the indoor unit 4 in the energy saving mode is not limited to the above-described one, and may be arbitrarily changed. For example, the diagnostic apparatus 1 may classify the plurality of indoor units 4 into a plurality of groups including one or more indoor units 4 and rotate them in units of groups.

  Further, in the energy saving mode, the diagnostic apparatus 1 may perform control so that the target temperatures of all the indoor units 4 are simultaneously increased during cooling, and the target temperatures of all the indoor units 4 are simultaneously decreased during heating.

  The power measuring device 6 (three in FIG. 1, 6A, 6B, and 6C) detects the amount of power consumed by the electrical device. In the present embodiment, the amount of power consumed by each of the X outdoor units 3 and the Y indoor units 4 is detected separately.

  Next, the hardware configuration of the diagnostic apparatus 1 will be described with reference to FIG.

  The communication unit 201 includes a NIC (Network Interface Card) and communicates with the outdoor unit 3 and the indoor unit 4.

  The image processing unit 202 generates and displays a screen to be displayed on the display 251.

  The audio processing unit 203 acquires audio data from the storage unit 206, reproduces it, and outputs audio from the speaker 252.

  The I / O unit 204 includes an interface such as a USB (Universal Serial Bus), and connects a memory card, an external hard disk, and the like to the diagnostic apparatus 1.

  The input unit 205 includes an input device that receives instructions from the user, such as buttons and a touch panel.

  The storage unit 206 includes a storage device such as a hard disk, and includes various programs for controlling the diagnostic device 1, environmental data representing temperature and humidity measured by the outdoor unit 3 and the indoor unit 4, an operating system (OS), and image data. Voice data, text data, etc. are stored.

  The control unit 207 includes a CPU, a ROM, and a RAM, and controls the entire diagnostic device 1. The control unit 207 performs diagnostic processing described later, and generates information related to the power saving effect.

  As the diagnostic device 1, a general computer, a mainframe, a cloud server, or the like can be used. Moreover, you may comprise so that the outdoor unit 3 and the outdoor unit 4 may function as the diagnostic apparatus 1.

  Next, a functional configuration of the diagnostic apparatus 1 will be described with reference to FIG.

  The power consumption data acquisition unit 301 acquires the actual power consumption values of the outdoor unit 3 and the indoor unit 4 from the power measurement device 6 via the communication network 2 and stores them in the power consumption data storage unit 302 as power consumption data. . The control unit 207 and the communication unit 201 cooperate to function as the power consumption data acquisition unit 301.

  When the outdoor unit 3 and the indoor unit 4 are provided with an ammeter, the power consumption data acquisition unit 301 may acquire power consumption data indicating an actual measurement value of power consumption from the outdoor unit 3 and the indoor unit 4.

  Alternatively, the power consumption data acquisition unit 301 acquires operation data indicating the operation status such as the operation time of the outdoor unit 3 and the indoor unit 4 via the communication network 2, and uses the power consumption based on the acquired operation data. And the calculation result may be stored in the power consumption data storage unit 302 as power consumption data. The power consumption data acquisition unit 301 may treat the calculated power consumption as an actual value of power consumption.

  The power consumption data acquisition unit 301 repeatedly acquires power consumption data and / or operation data at regular time intervals and stores them in the power consumption data storage unit 302. The time interval for acquiring power consumption data and / or operation data is determined in advance.

  Since the operation mode includes a normal mode and an energy saving mode, if the indoor unit 4 is operating in the normal mode, the power consumption data acquisition unit 301 indicates the measured power consumption value in the normal mode. If it is operating in the energy saving mode, an actual measurement value of power consumption in the energy saving mode is acquired.

  The power consumption data storage unit 302 stores the power consumption data and / or operation data acquired by the power consumption data acquisition unit 301 in association with information indicating the acquired time or the measured time. The power consumption data storage unit 302 stores power consumption data and / or history of operation data. The storage unit 206 functions as the power consumption data storage unit 302.

  The power consumption data storage unit 302 stores power consumption data and / or operation data within a predetermined period, for example, for the most recent past year. The length of this period is arbitrary.

  FIG. 4 shows an example of power consumption data stored in the power consumption data storage unit 302 of the present embodiment. The air conditioning system 100 is divided into a plurality of systems, for example, for each floor of the building, where the first floor of the building is the first system, the second floor of the building is the second system, and the third floor of the building is the third system. In the power consumption data storage unit 302, for each system, an actual measured value of power consumption (unit: kilowatt hour (kWh)) is stored in association with the measured time.

  The environmental data acquisition unit 303 acquires environmental data indicating the environment around the place where the outdoor unit 3 and the indoor unit 4 are installed at least while the air conditioning system 100 is operating. The control unit 207 and the communication unit 201 work together to function as the environment data acquisition unit 303.

  More specifically, the environmental data acquisition unit 303 detects the temperature and humidity outside the room to be air-conditioned from various sensors built in the outdoor unit 3 or various sensors attached to the outdoor unit 3. Environmental data indicating actual measured values such as the concentration of carbon dioxide and the illuminance (brightness) outside the room are acquired. The environment data acquisition unit 303 also detects the temperature and humidity in the room to be air-conditioned, carbon dioxide in the air, from various sensors built in the indoor unit 4 or various sensors attached to the outdoor unit 3. Environmental data indicating actual measured values such as the concentration of the light and the illuminance in the room are acquired.

  Alternatively, the environmental data acquisition unit 303 obtains environmental data indicating measured values such as temperature and humidity of the outside air and weather from a server connected to an external network such as the Internet and managed by a public institution or a weather service company. You may get it.

  In the present embodiment, the environmental data acquisition unit 303 acquires environmental data from various sensors built in the outdoor unit 3 and the indoor unit 4.

  The environmental data acquisition unit 303 repeatedly acquires environmental data at regular time intervals and stores it in the environmental data storage unit 304. The time interval for acquiring the environmental data is predetermined and has an arbitrary length.

  The environmental data acquisition unit 303 always obtains environmental data regardless of whether the air conditioning system 100 is operating, in other words, regardless of whether the air conditioning system 100 is performing cooling, heating, dehumidification, or blowing. It may be repeatedly acquired and stored in the environment data storage unit 304.

  The environment data storage unit 304 stores the environment data acquired by the environment data acquisition unit 303 in association with information indicating the acquired time or the measured time. The environmental data storage unit 304 stores environmental data history. The storage unit 206 functions as the environment data storage unit 304.

  FIG. 5 shows an example of environment data stored in the environment data storage unit 304 of this embodiment. In the environmental data storage unit 304, the suction temperature of air sucked from the air intake of the indoor unit 4 (unit is Celsius) and the operation state (ON or OFF), the suction temperature of air sucked from the air intake of the outdoor unit 3 (Unit is Celsius), frequency at which the compressor operates (unit is Hertz), and temperature measured by the remote controller 5 are stored in association with the measured time.

  The estimation unit 305 uses the power consumption data stored in the power consumption data storage unit 302 and the environment data stored in the environment data storage unit 304 to obtain the power consumption acquired during operation in the normal mode. If it is data, estimated data indicating an estimated value of power consumption that is expected to have been consumed if operating in the energy saving mode is calculated. If it is power consumption data acquired during operation in the energy saving mode, the estimation unit 305 calculates estimation data indicating an estimated value of power consumption that is expected to have been consumed if operated in the normal mode. The control unit 207 functions as the estimation unit 305.

  The estimated data includes estimated values of power consumption by the outdoor unit 3 and the indoor unit 4. For example, when the cooling operation is performed in the normal mode from the time TA to the time TB, the estimation unit 305 assumes that the cooling operation is performed in the energy saving mode from the time TA to the time TB. An estimated value of power consumption from time TA to time TB under the assumption is calculated. By comparing the calculated estimated power consumption in the energy saving mode with the actual measured power consumption in the normal mode, the effects that should have been obtained in the energy saving mode (specifically, saving can be achieved). It is possible to estimate how much power consumption should have been).

  For example, when the cooling operation is performed in the energy saving mode from the time TC to the time TD, the estimation unit 305 assumes that the cooling operation is performed in the normal mode from the time TC to the time TD. An estimated value of power consumption from time TC to time TD under the assumption is calculated. If the estimated value of power consumption in the normal mode is compared with the actual value of power consumption in the energy saving mode, how much effect was obtained by the energy saving mode (specifically, actually The amount of power consumption saved) can be estimated.

  The estimation unit 305 repeatedly calculates the estimation data at regular time intervals and stores the estimation data in the estimation data storage unit 306. The time interval for calculating the estimation data is determined in advance and is an arbitrary length.

  The estimated data storage unit 306 stores the estimated data calculated by the estimating unit 305 in association with the time to be estimated. The estimated data storage unit 306 stores a history of estimated data. The storage unit 206 functions as the estimated data storage unit 306.

  FIG. 6 shows an example of estimated data stored in the estimated data storage unit 306 of this embodiment. In the estimated data storage unit 306, for each system, the power consumption estimated to have been consumed if operating in the energy saving mode if the system is operating in the normal mode at that time, If it is in operation, the power consumption estimated to have been consumed if it was operating in the normal mode is stored.

  The estimation data storage unit 306 stores information indicating the operation mode at the estimation target time in association with the calculated estimated value of power consumption, that is, a flag for distinguishing whether the operation is in the normal mode or the energy saving mode. May be. However, since the energy saving mode generally has less power consumption than the normal mode, even if this flag is not present, the power consumption stored in the power consumption data storage unit 302 shown in FIG. From the magnitude relationship with the power consumption at the same time stored in the estimated data storage unit 306, it is possible to determine which operation mode was set at that time.

  For each of the power consumption data stored in the power consumption data storage unit 302, the ratio calculation unit 307 is the ratio between the power consumption amount indicated by the power consumption data and the estimated data stored in the estimated data storage unit 306. Calculate The control unit 207 functions as the ratio calculation unit 307.

  If the period during which both the power consumption data and the estimated data are acquired is equal to or longer than a predetermined length, the ratio calculation unit 307 calculates the ratio by dividing the period into a plurality of times, and acquires the distribution of the ratio To do.

  The effect calculation unit 308 calculates the actual power consumption value indicated by the power consumption data acquired by the power consumption data acquisition unit 301, the estimated power consumption value calculated by the estimation unit 305, and the ratio calculation unit 307. Based on the ratio, an index value indicating the power saving effect by the energy saving mode is calculated. The control unit 207 functions as the effect calculation unit 308.

  The output unit 309 outputs the index value calculated by the effect calculation unit 308. For example, the output unit 309 displays a measured value of power consumption and an estimated value of power consumption on the display 251. When the outdoor unit 3 and the indoor unit 4 are operating in the normal mode, the output unit 309 displays the measured power consumption value in the normal mode and the estimated power consumption value in the energy saving mode on the display 251. 3 and the indoor unit 4 are operating in the energy saving mode, the measured value of the power consumption in the energy saving mode and the estimated value of the power consumption in the normal mode are displayed on the display 251. The user can know the power consumption expected to be reduced by setting the energy saving mode, or the power consumption expected to be reduced by setting the energy saving mode. The control unit 207 and the image processing unit 202 cooperate to function as the output unit 309.

  Next, details and flow of diagnostic processing executed by the diagnostic apparatus 1 will be described with reference to the flowchart of FIG. In the present embodiment, it is assumed that the air conditioning system 100 is already operating in the energy saving mode. While operating in the energy saving mode, the diagnostic apparatus 1 calculates the amount of power consumption that is estimated to have been consumed if it was operating in the normal mode, and the calculated estimated power consumption value and the power consumption Compared with the actual measurement value, the power saving effect by the energy saving mode is diagnosed.

  First, the control unit 207 acquires a current value detected by the power measuring device 6 (step S701). In this embodiment, the electric power measuring device 6 is installed in each of the outdoor unit 3 and the indoor unit 4, and the current value can be measured individually.

  In this embodiment, an AC ammeter is employed as the power measuring device 6. In general, an ammeter measures an instantaneous value, so that it is necessary to repeatedly measure a current value in a short cycle in order to improve measurement accuracy. The control unit 207 acquires an actual measurement value by an ammeter a plurality of times in a predetermined time period (hereinafter referred to as “power aggregation period”), and stores the acquired multiple actual measurement values for each power aggregation period. Store in the unit 206.

  The control unit 207 acquires an actual measurement value of power consumption for each power aggregation period, and stores it in the storage unit 206 as power consumption data in association with information indicating the measured time (step S702).

  Note that the processing from step S701 to step S702 may always be executed in the background in a different process different from the diagnosis processing.

  The control unit 207 acquires environmental data measured by the outdoor unit 3, the indoor unit 4, or other various sensors at a predetermined time period (hereinafter referred to as “environment measurement period”) (step S703).

  The environmental measurement cycle is preferably the same as the power aggregation cycle, but may be different. Further, the current value measurement timing and the environmental data measurement timing are preferably the same, but they may be different.

  The control unit 207 stores the environmental data acquired in step S703 in the storage unit 206 in association with the measured time (step S704).

  Note that the processing from step S703 to step S704 may always be executed in the background in a different process different from the diagnostic processing.

  The control unit 207 calculates estimated data indicating an estimated value of power consumption that is expected to be consumed when operating in the normal mode based on the environmental data stored in step S704 for each power aggregation period (step S705).

  The control unit 207 may acquire operation data indicating the operation status of the outdoor unit 3 and the indoor unit 4 from the outdoor unit 3 and the indoor unit 4, and may calculate estimated data based on the operation data. Specifically, the operation data is data indicating the continuous operation time of the outdoor unit 3, the continuous operation time of the indoor unit 4, the target temperature set in the indoor unit 4, and the like.

  For example, as illustrated in FIG. 8, the storage unit 206 stores a standard value of power consumption in advance for each of the outdoor unit 3 and the indoor unit 4 in association with the operation status. The standard value is a value that is a measure of the amount of power per unit time consumed by the outdoor unit 3 and the indoor unit 4, and is set in advance, for example, when a product is shipped. For each of the outdoor unit 3 and the indoor unit 4, the control unit 207 multiplies the continuous operation time by the standard value of the power consumption stored in the storage unit 206, thereby calculating the estimated power consumption for each electric device. calculate. The control unit 207 calculates the total of the estimated power consumption values calculated by the respective electric devices. This total value is an estimated value of power consumption by the entire air conditioning system 100 in the normal mode.

  The control unit 207 simulates the airflow in the room using the three-dimensional model representing the room to be air-conditioned and the environmental data, estimates the temperature change and temperature distribution in the room from the result of the simulation, and calculates the power consumption in the normal mode. An estimated value may be calculated.

  In addition, during the operation in the energy saving mode, the control unit 207 may calculate an estimated value of power consumption in the normal mode based on the past operation history.

  FIG. 9 shows history data, which is an operation history of each device, stored in the storage unit 206. For example, the first indoor unit starts the cooling operation in the normal mode at the target temperature of 25.0 degrees at the first time (June 24, 2014, 10:00), and the second time (2014, June 6). The cooling operation was completed at 11:00 on March 24. The control unit 207 acquires an actual measurement value of power consumption by the first indoor unit from the first time to the second time from the power consumption data shown in FIG. In this case, since the operating time is one hour, an actual measurement value of power consumption by the first indoor unit per hour during the cooling operation can be obtained. That is, the past actual measurement value of the power consumption per unit time is obtained from the past operation history. The control unit 207 can calculate an estimated value of power consumption in the normal mode by multiplying the current continuous operation time of the first indoor unit by the past actual measured value of power consumption per unit time.

  When calculating the estimated value of the power consumption in the normal mode, the control unit 207 acquires the date and time when the operation was performed in the normal mode from the history data, and the acquired date and time from the environmental data illustrated in FIG. Get the corresponding environmental data. The control unit 207 acquires, from the power consumption data illustrated in FIG. 4, past measured values of power consumption at the date and time when operating in the normal mode and corresponding to the environmental data matching the environmental data at the current date and time. . For example, if the current weather is sunny and the temperature of the outside air is 30 degrees, the control unit 207 determines the past consumption when the weather is sunny and the temperature of the outside air is 30 degrees and operates in the normal mode. Get power data. The control unit 207 estimates the acquired power consumption amount as the power consumption amount when assuming that the current operation is in the normal mode.

  When calculating the estimated value of the power consumption in the energy saving mode, the control unit 207 acquires the date and time when the operation was performed in the energy saving mode from the history data, and the acquired date and time from the environmental data illustrated in FIG. Get the corresponding environmental data. The control unit 207 obtains, from the power consumption data illustrated in FIG. 4, past measured values of power consumption at the date and time when operating in the energy saving mode and corresponding to the environmental data matching the environmental data at the current date and time. . For example, if the current weather is sunny and the temperature of the outside air is 30 degrees, the control unit 207 determines the past consumption when the weather is sunny and the temperature of the outside air is 30 degrees and the operation is performed in the energy saving mode. Get power data. The control unit 207 estimates the acquired power consumption amount as the power consumption amount when assuming that the power consumption mode is currently operated.

  In this way, the power consumption amount is estimated based on the power consumption amount at the date and time when the conditions match the present condition from the past history.

  If there are a plurality of corresponding power consumption data, the control unit 207 estimates the power consumption based on the power consumption data closest to the current date and time.

  The control unit 207 stores the estimated value of power consumption calculated in step S705 in the storage unit 206 as estimated data in association with information indicating the time when the electric device (in this embodiment, the indoor unit 4) operates ( Step S706).

  For each time period for calculating the index value (hereinafter referred to as “effect calculation period”), the control unit 207 measures an actual value of power consumption in the energy saving mode, an estimated value of power consumption when operating in the normal mode, Is calculated (step S707). The control unit 207 calculates this ratio for each sample in the effect calculation period, and acquires the distribution of the calculated ratio.

  Here, the control unit 207 sets the effect calculation cycle to n times the power counting cycle (n is an integer of 1 or more). For example, if the effect calculation cycle is 30 days and the power aggregation cycle is 1 day, the ratio for 30 samples is obtained. By making the effect calculation cycle an integral multiple of the electrical counting cycle, the number of samples can be kept constant, and the reliability of the diagnosis result increases.

  Based on the calculated ratio, the control unit 207 calculates an index value indicating the magnitude of the power saving effect in the energy saving mode (step S708).

  That is, the control unit 207 corrects the estimated power consumption value in the normal mode by multiplying the estimated power consumption value calculated in Step S705 by the average value of the ratio obtained in Step S707. This corrected estimated value becomes an index value to be finally output.

  The control unit 207 calculates the standard deviation σ of the ratio, and uses the end point obtained by adding or subtracting a value obtained by multiplying the standard deviation σ by an integer to the average value of the calculated ratio to calculate the estimated power consumption value. It may be corrected.

  Then, the control unit 207 outputs an index value indicating the magnitude of the power saving effect in the energy saving mode (step S709). For example, the control unit 207 displays either or both of an estimated value of power consumption using the average value of the ratio and an estimated value of power consumption using the standard deviation σ on the display 251.

  The control unit 207 may calculate a statistical error SE of n samples represented by [Equation 1], and may use the calculated error SE as one of the index values.

SE = SQRT (N−n) / SQRT (N−1) * σ / SQRT (n)
... [Formula 1]

  The operator SQRT represents the square root. σ is a standard deviation. N is the total number of samples.

  When the air conditioning system 100 is divided into a plurality of systems such as every floor of a building, the control unit 207 calculates an error SE for each of the systems.

  The calculation formula of the error SE is not limited to the above [Formula 1]. When N is sufficiently large, the simplified [Expression 2] can also be used.

  SE = σ / SQRT (n) (2)

  FIG. 10 shows a display example of the diagnosis result. The control unit 207 displays a message box 1000 including an actually measured value of power consumption in the energy saving mode, an estimated value of power consumption expected when operating in the normal mode, and an error SE of the estimated value.

  The control unit 207 may display the message box 1000 in response to an instruction from the user to display the power saving effect in the energy saving mode. For example, every hour, the control unit 207 periodically updates the latest measured value. A message box 1000 including an estimated value may be displayed.

  According to the present embodiment, the diagnostic device 1 uses the distribution of the ratio calculated as described above for a plurality of samples when comparing the measured value and the estimated value of the power consumption. It is possible to calculate the magnitude of the power saving effect with higher reliability while minimizing variations due to conditions and usage conditions. Further, by presenting not only the power consumption but also the error range, it is possible to notify the user that the calculated value is a theoretical value and not a definite numerical value.

  The magnitude of the difference between the estimated value and the actually measured value in the same operation mode is considered to vary depending on the equipment in addition to the weather conditions. For example, when the indoor thermal load is biased, there may be a device that can obtain an estimated value with high accuracy and a device that has a large error. By grouping to some extent for each system, etc., and comparing the actual and estimated values calculated in groups, the overall power consumption can be reduced without being dragged by errors in the power consumption of some devices. The accuracy of guessing can be increased.

  Especially for systems where the difference between the estimated value and the measured value is large in the same operation mode, it is recommended that the control unit 207 perform a check because a short cycle, construction error, failure, etc. may have occurred. You may alert | report to the effect to do. Thereby, it is possible to prevent the air conditioning system 100 from being used for a long period of time in an inefficient state or in a state where a cause of failure or the like is lurking.

  The present invention is not limited to the above-described embodiments, and various modifications and applications are possible. Moreover, it is also possible to freely combine the constituent elements of the above-described embodiments.

  In the said embodiment, although the diagnostic apparatus 1 is diagnosing the effect of the energy saving mode in the air conditioning system 100 which controls the air conditioning in a room, instead of the air conditioning system 100, a lighting system, a ventilation system, a hot water supply system, etc. You may diagnose the power saving effect by the energy saving mode in another system.

  In the above-described embodiment, the diagnostic device 1 estimates the power consumption that is estimated to be consumed if the electric device is operating in the normal mode when the electric device is operating in the energy saving mode. However, when the electrical device is operating in the normal mode, the diagnostic device 1 may estimate the power consumption that is estimated to be consumed if the electrical device is operating in the energy saving mode.

  The diagnostic device 1 may diagnose the power saving effect regardless of whether or not the electrical device is currently operating. The diagnostic device 1 is estimated to have been consumed if it was operating in the energy saving mode, and if it was operating in the energy saving mode, if it was operating in the normal mode. It is also possible to estimate both the amount of power consumed and output the estimation result.

  The diagnosis device 1 may diagnose the power saving effect retroactively from the past operation history. That is, the diagnostic device 1 receives an input of a past date and time from the user, determines an operation mode at the date and time indicated by the received input based on the operation history, and if the determined operation mode is an energy saving mode, temporarily enters the normal mode. If it is operating, the estimated power consumption is estimated.If the determined operation mode is the normal mode, the estimated power consumption is calculated if it is operating in the energy saving mode. You may guess.

  A program for operating a computer as all or part of the diagnostic apparatus 1 is stored and distributed in a computer-readable recording medium such as a memory card, CD-ROM, DVD, or MO (Magneto Optical disk). This may be installed in another computer and operated as the above-described means, or the above-described steps may be executed.

  Furthermore, the program may be stored in a disk device or the like included in a server device on the Internet, and may be downloaded onto a computer by being superimposed on a carrier wave, for example.

  Various embodiments and modifications can be made to the present invention without departing from the broad spirit and scope of the present invention. Further, the above-described embodiment is for explaining the present invention, and does not limit the scope of the present invention. That is, the scope of the present invention is shown not by the embodiments but by the claims. Various modifications within the scope of the claims and within the scope of the equivalent invention are considered to be within the scope of the present invention.

  As described above, according to each of the above embodiments, the reliability of calculation of the power saving effect can be improved.

DESCRIPTION OF SYMBOLS 1 Diagnosis apparatus, 2 Communication network, 3 Outdoor unit, 4 Indoor unit, 5 Remote controller, 6 Electric power measurement apparatus, 100 Air-conditioning system, 201 Communication part, 202 Image processing part, 203 Voice processing part, 204 I / O part, 205 Input unit, 206 storage unit, 207 control unit, 251 display, 252 speaker, 301 power consumption data acquisition unit, 302 power consumption data storage unit, 303 environmental data acquisition unit, 304 environmental data storage unit, 305 estimation unit, 306 estimation data Storage unit, 307 ratio calculation unit, 308 effect calculation unit, 309 output unit, 1000 message box

In order to achieve the above object, a diagnostic apparatus according to the present invention provides:
A power consumption data acquisition unit that acquires an actual value of power consumption when an electrical device having a plurality of operation modes with different power consumptions is operating in any one of the plurality of operation modes;
An environmental data acquisition unit that acquires environmental data indicating an environment of a place where the electrical device is installed;
An estimation unit that calculates an estimated value of power consumption when the electrical device operates in another operation mode different from the operation mode of the electrical device when the environment data is acquired based on the acquired environment data. When,
A ratio calculation unit for acquiring the distribution of the ratio of the ratio between the measured value and the previous SL calculated estimate of the power consumption of the power consumption the acquired and calculated, which is the calculated,
Based on the acquired ratio distribution , an effect calculation unit that calculates a power saving effect due to the electric device operating in another operation mode;
Is provided.

Claims (8)

A power consumption data acquisition unit that acquires an actual value of power consumption when an electrical device having a plurality of operation modes with different power consumptions is operating in any one of the plurality of operation modes;
An environmental data acquisition unit that acquires environmental data indicating an environment of a place where the electrical device is installed;
An estimation unit that calculates an estimated value of power consumption when the electrical device operates in another operation mode different from the operation mode of the electrical device when the environment data is acquired based on the acquired environment data. When,
A ratio calculation unit for calculating a ratio between the actual measurement value of the acquired power consumption and the estimated value of the calculated power consumption;
Based on the calculated ratio, an effect calculation unit that calculates a power saving effect due to the electric device operating in another operation mode;
A diagnostic device comprising: A storage unit that pre-stores a standard value for each operation mode of power consumption by the electrical device;
When the electrical device is operating in one operation mode of the plurality of operation modes, the estimation unit is configured to operate the electrical device in another operation mode of the plurality of operation modes. Inferring the power consumption based on a standard value of power consumption corresponding to the operation,
The diagnostic device according to claim 1. A storage unit for storing a past operation history of the electric device;
When the electrical device is operating in one operation mode of the plurality of operation modes, the estimation unit is configured to operate the electrical device in another operation mode of the plurality of operation modes. An operation history when operating is acquired from the storage unit, and an estimated value of the power consumption is calculated based on the acquired operation history.
The diagnostic device according to claim 1. It further includes an input receiving unit that receives date and time input from the user,
The estimation unit determines an operation mode at a date and time indicated by the received input based on the operation history, and the power consumption when the electric device operates in another operation mode different from the determined operation mode. Calculate an estimate,
The diagnostic device according to claim 3. When the electrical device is operating in the first mode, the estimation unit is an estimated value of power consumption that is expected to be saved by operating in the second mode, which consumes less power than the first mode. When the electric device is operating in the second mode, the estimated value of power consumption expected to be consumed more than the second mode by operating in the first mode is calculated. ,
The diagnostic device according to any one of claims 1 to 3. The ratio calculation unit divides the period into a plurality of sections if the period during which both the measured value of the power consumption and the estimated value are acquired is equal to or longer than a predetermined length, and Calculating the ratio,
The diagnostic apparatus of any one of Claim 1 to 5. A power consumption data acquisition step of acquiring an actual measurement value of power consumption when an electrical device having a plurality of operation modes with different power consumption is operating in any one of the plurality of operation modes;
An environmental data acquisition step of acquiring environmental data indicating an environment of a place where the electrical device is installed;
An estimation step of calculating an estimated value of power consumption when the electric device operates in another operation mode different from the operation mode of the electric device when the environmental data is acquired based on the acquired environmental data. When,
A ratio calculating step of calculating a ratio between the actual measured value of the acquired power consumption and the estimated value of the calculated power consumption;
Based on the calculated ratio, an effect calculation step of calculating a power saving effect due to the electric device operating in another operation mode;
A diagnostic method comprising: Computer
A power consumption data acquisition unit that acquires an actual value of power consumption when an electrical device having a plurality of operation modes with different power consumptions is operating in any one of the plurality of operation modes,
An environmental data acquisition unit for acquiring environmental data indicating an environment of a place where the electrical device is installed;
An estimation unit that calculates an estimated value of power consumption when the electrical device operates in another operation mode different from the operation mode of the electrical device when the environment data is acquired based on the acquired environment data. ,
A ratio calculation unit for calculating a ratio between the actual measurement value of the acquired power consumption and the estimated value of the calculated power consumption;
Based on the calculated ratio, an effect calculation unit that calculates a power saving effect due to the electric device operating in another operation mode,
Program to function as.

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