JP5047246B2 - Elevator energy saving operation system - Google Patents

Description

  The present invention relates to an elevator control system that performs overall control of a plurality of elevators, and is particularly suitable for an energy-saving operation by controlling the power of a plurality of elevators.

  Conventionally, in order to improve operation efficiency from the viewpoints of ease of use, energy saving, and space saving, elevator control systems have been operated with maximum smoothness while minimizing waiting time and travel time. An elevator is a typical peak power load, and it is necessary to grasp peak power and cut peak power for energy saving.

  In addition, in order to suppress the total peak power consumption of multiple elevator cars, when the total peak power consumption at a given moment is less than a predetermined threshold, a specific schedule is operated for a group of elevator cars. It is known to select as, for example, described in Patent Document 1.

  Also, because the demand for the office building as a whole does not exceed the contracted power, the elevator operates, so when a demand warning is issued when the predicted value of demand exceeds the contracted power, the predetermined maximum speed of the elevator Or it is described in patent document 2 to make it a predetermined acceleration.

  Furthermore, in order to operate using the allowable electric energy of the elevator in the whole building effectively, the allowable electric energy that can be consumed by each elevator is detected, and the number of elevators that can be started simultaneously is determined based on this allowable electric energy. Japanese Patent Application Laid-Open No. 2004-133830 describes setting the number of permitted activations by the number of units that can be activated.

  In addition, the number of operations and hall call occurrence probability are predicted from the learning results, and the power consumption target value and the energy-saving control level are taken into account in order to reliably achieve the energy-saving target while minimizing the decrease in elevator convenience. Patent Document 4 describes that the number of driving times is restricted by the departure restriction for each day of the week.

JP 2008-308332 A JP 2009-96582 A JP-A-4-217570 JP 2007-55700 A

  In the prior art described in Patent Document 1, since only a specific schedule is selected, the total peak power consumption at each time point of a plurality of elevators cannot be effectively suppressed. Therefore, the serviceability (for example, waiting time) to the user at each time point is greatly affected and may be lowered.

  Moreover, in the thing of patent document 2, since the amount of demands as a whole is only considered, the service with respect to the user for every elevator similarly to patent document 1 falls. In particular, when the maximum speed of all elevators is uniformly reduced or the maximum speed is reduced with the average waiting time of all the elevators, the operation service for the elevator user at that time is greatly reduced. Furthermore, since the maximum speed or acceleration of the elevator is limited, the power is reduced more than necessary and the service is lowered.

  Similarly, in the thing of patent document 3, since the number of elevators which can be started is restrict | limited, the service with respect to a user falls remarkably.

  Furthermore, in the thing of patent document 4, since the frequency | count of a driving | operation is uniformly restrict | limited for the whole elevator (all units), the service with respect to the user for every individual elevator falls significantly.

  As described above, according to the conventional technology, it is difficult to reliably and effectively reduce the total power at each time point of a plurality of elevators to a predetermined value or less, and the operation service to the users of each elevator is reduced. Users could be particularly affected.

  The object of the present invention is to solve the above-mentioned problems of the prior art, to reliably and effectively suppress the total power at each time point of a plurality of elevators, and to affect users who use each elevator at each time point. To reduce (deterioration of service).

  Another purpose is that, from the perspective of the entire user, there is no significant variation in the operation service of each elevator, and the power of each elevator is limited to save energy despite the fact that it is energy saving. It is to do.

  Furthermore, another object is to greatly reduce the equipment capacity of the power receiving equipment of the entire elevator (a power receiving equipment for supplying power to each elevator).

  The present invention is to achieve at least one of the above objects.

To achieve the above object, according to the present invention, in an energy saving operation system for an elevator that controls the operation of an elevator that services a plurality of floors, a threshold value is obtained by summing up the power consumption values of a plurality of the elevators. A power suppression value for each elevator is determined from a total power suppression value that is less than or equal to the value, and the power suppression value corresponds to a service index according to at least one of the estimated waiting time of the elevator, the number of passengers in the elevator, and the estimated riding time of the elevator The elevator is determined by determining a ratio to the total power suppression value, and the elevator is operated for energy saving by adjusting the maximum speed, acceleration or stop time of each elevator based on the power suppression value .

The present invention also relates to an energy saving operation system for an elevator that controls the operation of a plurality of elevators that service a plurality of floors, and includes at least a direction of a car, a hall call, a car call, the number of passengers, and building traffic information. The power profile calculation means that obtains the time transition of the power usage value of each elevator as the power profile from either, and the total power suppression value that makes the total power usage value less than the threshold value from the total power profile that totals the power profiles And a power suppression value calculation means for calculating the total power suppression value as a power suppression value for each elevator, wherein the power suppression value includes at least a predicted waiting time for each elevator, the number of passengers in each elevator, and each elevator. The ratio to the total power suppression value depending on the service index according to any of the predicted boarding times Determining the determined, the elevator is based on the power suppression value are those energy saving operation by adjusting the maximum speed, acceleration or stop time of each elevator.

According to the present invention, the power suppression value of the elevator is determined from the total power consumption value of a plurality of elevators, and the power suppression value depends on at least one of the estimated waiting time of the elevator, the number of passengers in the elevator, and the estimated riding time of the elevator Since the ratio to the total power suppression value is determined according to the service index and energy saving operation is performed based on the power suppression value, the total power is suppressed and the impact on the users who use each elevator (operation service Can be reduced.

The block diagram which shows one embodiment by this invention. The block diagram which shows the example of an elevator structure which is one embodiment. The graph which shows the electric power profile before the change in one embodiment. The table | surface which shows the example of calculation of the prediction waiting time in one embodiment, and a power suppression value. The graph which shows the electric power profile after the change in one embodiment. The block diagram which shows the power receiving installation in one embodiment. The block diagram which shows other embodiment by this invention. The graph which shows the speed and acceleration of an elevator with respect to time in one embodiment. Explanatory drawing which shows the relationship between the condition of the elevator in one embodiment, and speed. The block diagram which shows other embodiment by this invention.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 shows an example of the configuration of an elevator control system, and controls the operation of each elevator so that the total power of a plurality of elevators is always kept below a predetermined upper limit value.
A total power suppression value for suppressing the total power of each elevator to a predetermined upper limit value or less is calculated (total power suppression value means 205), and a power suppression value distribution index for distributing this suppression value to each elevator is set for each It calculates according to the waiting time of the elevator hall call (power suppression value distribution index calculation means 210 of each elevator), and calculates the power suppression value of each elevator from the total power suppression value according to the power suppression value distribution index (each elevator Power suppression value calculation means 211).

  FIG. 2 shows a configuration with three elevators. There are a first car 11, a second car 12, a third car 13, and information on each car (the destination registered in the car). Floor call, car load or number of passengers, door open / closed state, etc.) and hall call information (direction, registration time) input by the hall buttons (41, 42, 43) are transmitted to the integrated control device 20. The integrated control device 20 adjusts the maximum power by controlling the operation (maximum speed, acceleration, stop time) of each elevator.

  The group management device performs overall control of the operation of a plurality of elevators, but the integrated control device 20 of FIG. 2 may be included in the group management device or may be different. For example, even when a plurality of elevators are installed in a building and these are not subjected to group management control, the operation of each elevator is controlled by the integrated control device 20.

  In addition, the integrated control device 20 gives a command for controlling the operation so as to adjust the power of each elevator (control device 31 for the first car, control device 32 for the first car 32, control device 32 for the third car, control device 33 for the third car). ).

Details of the integrated control device 20 of FIG. 1 will be described.
The elevator specifications and building specification data storage means 201 stores elevator specifications (rated speed, acceleration, rated load capacity, etc.) and building specifications (number of floors, floor pitch, number of elevators, etc.). Each elevator operation-related data storage means 202 includes a control device for each elevator, a car, car operation data (speed, direction, etc.) collected from the hall on each floor, hall call data, car call data, passenger number data, The estimated arrival time data for each car, hall call duration data (elapsed time since the hall call was registered), and the like are accumulated.

The power profile calculation means 203 for each elevator is a power profile for the time ahead of each elevator from the data stored in the elevator specification and building specification data storage means and the data stored in the operation-related data storage means of each elevator. Is calculated. The power profile represents the time transition of the power usage value (unit: W) of the elevator, and a specific example is shown in FIG.
The power profile after the present time is calculated from at least information on the direction of ascending or descending of the car, speed, acceleration, number of passengers, hall call and car call (excluding calls that have not occurred).

The total power profile calculation means 204 calculates the total power profile (total power profile) by summing up the power profiles of the elevators.
The total power suppression value calculation unit 205 detects the maximum power value of the total power profile, compares it with a threshold value (set by the threshold setting unit 206), and if the threshold value is exceeded, the maximum power value A total power suppression value that is a power value to be suppressed is calculated from the difference between the value and the threshold value. The threshold value is an upper limit value of the maximum power of the entire elevator, and is set based on, for example, the power capacity of the power receiving equipment of all elevators.

  The lower three graphs in FIG. 3 represent examples of power profiles of Units 1, 2, and 3, respectively. In this figure, the power profile up to 60 seconds ahead is calculated. The vertical axis represents the power value, and the unit is not W (Watt), but the power at the rated speed (corresponding to the maximum speed) is normalized to be 100. The uppermost graph in FIG. 3 represents the total power profile for the three elevators. Since the maximum power is 370 with respect to the power upper threshold 250, the total power suppression value that is the difference is 120. The suppression value 120 is distributed to each elevator, and energy saving operation is performed so that the maximum value of the total power is 250 or less.

Calculation of the power profile of each elevator will be described with reference to FIG.
Speed curve (FIG. 8 (a)) and acceleration curve (FIG. 8 (b)) for arriving at the stop position from the position, speed, direction of the elevator car at the time of departure and the position at which the elevator next stops. Create

The next stop position of the elevator is determined by the hall call or car call that is closest to the current elevator position. From the velocity v (t) (unit: m / s) and acceleration α (t) (unit: m / s ² ) at each time point t as known from the velocity curve and acceleration curve, the power P (t) at each time point is It can be calculated by the formula.
P (t) = v (t) · [(Mc + Mw + Mp) · α (t) + ΔMu · g] (1)
Mc is the car weight (excluding passengers, the unit is kg)
Mw is the weight of the counterweight,
Mp is the total passenger weight (loading capacity),
ΔMu is the unbalanced weight (the difference between the total weight of the car including passengers and the weight of the counterweight),
g is the gravitational acceleration (9.8 m / s ² ).

The unbalance weight ΔMu can be obtained by ΔMu = (Mc + Mp) −Mw. Mc and Mw are constant values determined by the elevator specifications, and Mp is obtained by calculating the predicted passenger weight (predicted load weight) from the load sensor value (load weight) of the car or the predicted number of passengers that can be predicted from the traffic information of the building. . Alternatively, the loading weight may be obtained from the product of the number of passengers and the average weight from the number of passengers or the predicted number of passengers. The unit of the electric power P (t) is kg · m ² / s ³ = N · m / s = J / s = W from the equation (1). The power profile shown in FIG. 3 is obtained by calculating the power P (t) at each time t.

When there is an unanswered assigned hall call, the calculation of the power profile will be described with reference to FIG.
FIG. 9 (a) shows the situation of an elevator with an unanswered assigned hall call. The elevator is descending on the 6th floor and has an unanswered hall call in the upward direction on the 1st floor. The estimated arrival time to the first floor is 15 seconds. FIG. 9B shows a predicted car call that is derived from an unanswered hall call. The figure predicts that a car call will occur on the 10th floor. For the prediction of the derived car call, there is a case where the highest statistical probability is selected from the past statistical data, or the end floor (the top floor or the bottom floor) is selected.

  FIG. 9C shows an example in which a speed curve is predicted for an unanswered hall call and derived car call based on FIG. 9B. After arriving at the first floor 15 seconds after the current time, carrying passengers with unanswered hall calls (stop for 10 seconds), leaving the first floor after 25 seconds, and traveling to the 10th floor of the derived car call after 85 seconds And stop. The acceleration curve can be obtained from FIG. 9C as in FIG. 8B, and the loading weight is predicted from the past statistical data, for example, from the average number of passengers on each floor in the time zone or traffic demand. . Therefore, even when there is an unanswered assigned hall call, the power profile is calculated from the equation (1) by calculating the prediction data of the speed curve and the acceleration curve and further obtaining the predicted value of the loaded weight.

The distribution method will be described with reference to FIG. In accordance with the service index (for example, waiting time) of each elevator, the power suppression is increased as the elevator has a better service index.
The predicted waiting time calculation means 207 in FIG. 1 calculates a predicted waiting time for the hall call of each elevator. The predicted waiting time is calculated by the sum of the elapsed time from the registration time of the hall call and the estimated arrival time at the registered floor of the hall call of the serviced car.

  The number of passengers calculating means 208 calculates the number of passengers in the car of each elevator from the current number of passengers in the car (calculated from the load value of the car) or the predicted number of passengers obtained from past passenger number data. The predicted boarding time calculation means 209 calculates the predicted boarding time of passengers of each elevator based on the predicted arrival time to the destination floor (determined by the car call) for each car.

  The power suppression value distribution index calculation means 210 for each elevator distributes the total power suppression value to each elevator based on at least one of the estimated waiting time of each elevator, the number of passengers in each elevator, and the estimated boarding time of each elevator. Therefore, the power suppression value distribution index of each elevator is calculated as an index serving as a distribution ratio. For example, the longer the predicted waiting time of the elevator, the smaller the distribution index (distribution ratio), that is, the smaller the power suppression value. As a result, in elevators with a long waiting time when the user's operation service is decreasing, it is possible to avoid operation adjustment due to power suppression compared to other elevators, and extreme service deterioration in individual and overall elevators Can be prevented.

  The power suppression value calculation means 211 of each elevator distributes the total power suppression value to each elevator based on the power suppression value distribution index, and calculates the power suppression value of each elevator. The maximum speed or acceleration calculating means for each elevator obtains the maximum speed, acceleration, or stop time of each elevator for operation control, that is, energy saving operation, based on the calculated power suppression value of each elevator, and the control device for each elevator Transmit to.

  FIG. 4 shows a specific example when the power suppression value distribution index is calculated based on the predicted waiting time. 4 assumes the situation of FIG. 3 and sets the total power suppression value to 120. FIG. Therefore, the total power suppression value 120 is distributed to the three elevators from Unit 1 to Unit 3 according to the predicted waiting time. The estimated waiting times for Units 1, 2, and 3 are 50 seconds, 5 seconds, and 15 seconds, respectively.

  The reciprocal of the estimated waiting time ratio (ratio to the total) of each elevator is calculated. For example, in the case of Unit 1, the value is 1.4 from 1 / {50 / (50 + 5 + 15)}. Similarly, the values for Unit 2 and Unit 3 are 14 and 4.7, respectively. Next, with respect to the reciprocal of the ratio of the predicted waiting time of each elevator, the ratio to the whole is obtained. For example, in the case of Unit 1, the value is 0.07 from 1.4 / (1.4 + 14 + 4.7 = 20.1). Similarly, the values of Units 2 and 3 are 0.7 and 0.23, respectively, which are power suppression value distribution indexes. The predicted waiting time is calculated so that the power suppression value distribution index becomes smaller according to the length.

  The power suppression value of each elevator is calculated as 8, 84, and 28, respectively, by multiplying the total power suppression value by the power distribution index of each elevator (the total satisfies 120). When the predicted waiting time is as long as 50 seconds as in the case of Unit 1, the power suppression value is as small as 8, and a decrease in elevator operation service due to power suppression can be avoided as much as possible. In Unit 2, the predicted waiting time is as short as 5 seconds, so the power suppression value is a large value of 84.

  Depending on the length of the waiting time of each elevator, the power suppression value of each elevator is set so that the operation service for users is leveled (so that the operation service does not vary). Even if it sees, the operation service of each elevator does not vary greatly, and despite being energy-saving, it has good serviceability for users.

  FIG. 5 shows the power profile of each elevator when the power suppression value of each elevator is determined according to FIG. 4, and the maximum speed of each elevator is changed (in this case, only the speed is changed), The power profile of each elevator is the bottom three graphs in FIG. 5 and the total power profile is as shown in the top graph of FIG. 5, and the total power profile is always controlled to be equal to or lower than the threshold value.

  As described above, the excess from the upper limit of the total power is obtained from the power profile of each elevator, the excess is individually distributed to each elevator as a power suppression value, and the maximum speed, acceleration or stop time of each elevator Therefore, the total power at each time point of the plurality of elevators can be surely set to a predetermined value or less, and energy saving of the elevator system can be achieved.

  In addition, as shown in Fig. 4, the excess distribution is distributed according to the operation service status of each elevator such as waiting time, so that the influence on the users who use each elevator at each time point is optimized (operation This makes it possible to limit the power of each elevator.

  In FIG. 1, the calculation of the power suppression value distribution index is shown as being calculated by a combination of the predicted waiting time, the number of passengers, and the predicted boarding time. However, at least one of the same effects can be obtained.

  For example, when calculating the power suppression value distribution index based on the predicted waiting time, the waiting time is the service index that is the most demanded for users, and the distribution index is determined based on this, thereby suppressing service variations. It is possible to realize power adjustment (with a low degree of dissatisfaction).

  On the other hand, when calculating the power suppression value distribution index based on the number of passengers, the power suppression value distribution index is determined according to the number of people affected by the power adjustment, and the service is appropriate for many people. The power is adjusted so that

  When calculating the power suppression value distribution index based on the predicted boarding time, as the maximum speed is limited by power adjustment, as shown in the power profile of Unit 2 in FIGS. 4 and 5, the boarding time becomes longer. It is possible to adjust the power so that the service is optimized for the boarding time that is most affected.

  Further, by combining any one of the predicted waiting time, the number of passengers, and the estimated boarding time (for example, the predicted waiting time and the number of passengers), the serviceability can be evaluated in more detail, and the combined serviceability is optimized. It is also possible to adjust the power as described above. Furthermore, the same applies when the predicted arrival time for a hall call is used instead of the predicted waiting time.

Supplementing energy saving by reducing the total power of a plurality of elevators, the loss due to the resistance component of the power line and transformer of the building power receiving facility is represented by Rt · i ² where the total resistance value is Rt. Here, i represents the current effective value during elevator operation.

When i is suppressed to 70%, Rt · i ² is 50%, and the loss is halved. Actually, the operating time T becomes longer because the speed is reduced. However, since T and i are almost inversely proportional, the loss amount Rt · i ² · T considering time is reduced to 70% when i is suppressed to 70%. it can.

  Therefore, by suppressing the total power, it is possible to reduce losses due to the power lines and transformers of the building power receiving equipment, and energy saving can be achieved as a whole system. Furthermore, even when viewed from the power generation facility side on the power system side, fluctuations in the amount of power generation can be suppressed, so that it can be operated under operating conditions with good power generation efficiency, contributing to energy saving.

FIG. 6 shows the configuration of the power receiving facility for a plurality of elevator systems. Electric power is sent from the power receiving equipment of the entire building to the elevator overall power receiving device A01 that brings together all elevators, and further, power is sent to the individual elevator power receiving devices (No. 1 A02, No. 2 A04, No. 3 A06), and finally In addition, electric power is sent to the drive devices of each elevator (No. 1 A03, No. 2 A05, No. 3 A07). When the embodiment of the elevator control system shown in FIG. 1 is used, the total power of all elevators can be always kept below a predetermined value, so that the power capacity of the elevator integrated power receiving apparatus can be reduced. For example, in the example of FIGS. 3 and 5, the elevator integrated power receiving apparatus requires 450 power capacity assuming the worst case in which three elevators are started simultaneously. The power capacity can be reduced to 55%. As a result, the cost and space of the power receiving equipment can be reduced, and the power can be further leveled. This leads to a reduction in the contract power of the building, and when viewed from the power system side, the number of such buildings increases. As a result, the load fluctuation is reduced, and it becomes easy to operate a base load type generator with low CO ₂ emission.

FIG. 7 shows that the threshold setting by the threshold setting means 206 is appropriately set based on the signal from the building total power management means 300, as compared with the one shown in FIG.
The building total power management means 300 manages the total power of the entire building, and manages so that the total power does not always exceed a predetermined value. For example, in a time zone where the power peak of the day is from 1 pm to 2 pm, the total power of the entire building is detected, and the power threshold value of the entire elevator is set so as not to exceed a predetermined value from that value. By calculating and transmitting this to the threshold setting means 206, power adjustment is performed so that the power of each elevator does not exceed the threshold and the service to the user is not degraded.

As a result, the total power of the building is always less than or equal to a predetermined value, so that it is possible to reduce the power receiving facility capacity of the entire building and to reduce contract power. Furthermore, the increase in the number of such buildings makes it possible to reduce the load fluctuation, facilitate the operation of a base load generator with low CO ₂ emissions, and contribute to environmental problems such as global warming countermeasures.

  FIG. 10 is provided with standby elevator detection means 213, standby elevator use determination means 214, standby elevator regenerative power value calculation means 215, and standby elevator regenerative operation command means 216, as compared with FIG.

  The standby elevator detection means 213 detects a standby elevator that is not in a hall call and a car call and is in a standby state (stopped state) from among the elevators. In standby elevator usage determination means 214, when total power suppression value calculation means 205 has a total power profile that is equal to or greater than a threshold value, the total power must be suppressed to a predetermined value or less, and a standby elevator exists. In addition, it is determined that the standby elevator is used.

  The standby elevator regenerative power value calculation means 215 calculates a regenerative power value when the corresponding standby elevator is moved so as to travel in a regenerative operation. The regenerative power value is obtained as the regenerative power value at the corresponding time or the maximum value of the regenerative power by calculating the power profile. When there are a plurality of corresponding standby elevators, the regenerative power value is calculated for each of the plurality of elevators.

  The calculated regenerative power value is input to the power suppression value calculation means 211 of each elevator. In the power suppression value calculation means 211 of each elevator, the value obtained by subtracting the regenerative power value (the total value when there are a plurality of standby elevators) from the operation of the standby elevator from the total power suppression value is again set as the total power suppression value. The power suppression value for each elevator is calculated. In the standby elevator regenerative operation command means 216, when the standby elevator use determination means 214 determines that the standby elevator is to be used, a command for the traveling direction and speed of the car is issued so that the corresponding standby elevator performs the regenerative operation. Transmit to the control unit.

  1 and 7, when the total power profile of each elevator exceeds a predetermined value, it is only necessary to suppress the power by adjusting the speed or acceleration of each elevator so that it is below the predetermined value. However, in the thing of FIG. 10, since it carries out regenerative operation using a standby elevator, it becomes possible to reduce total electric power, without impairing the serviceability of each elevator. In addition, when an elevator performs regenerative operation, since a motor will be in a generator state and generate | occur | produce electric power, it becomes possible to reduce the power consumption of the whole elevator. Since the standby elevator is in a no-load state (loading weight is zero), when the car is operated in the upward direction, it enters a regenerative operation state.

20 integrated control apparatus 201 elevator specification and building specification data storage means 202 operation related data storage means 203 for each elevator 203 power profile calculation means 204 for each elevator total power profile calculation means 205 total power suppression value calculation means 206 threshold setting means 207 Predicted waiting time calculating means 208 Passenger number calculating means 209 Predicted boarding time calculating means 210 Power suppression value distribution index calculating means 211 for each elevator Power suppression value calculating means for each elevator 300 Total building power management means

Claims (7)

In an elevator energy-saving operation system that controls the operation of elevators that serve multiple floors,
A power suppression value of each elevator is determined from a total power suppression value that is equal to or lower than a threshold value, which is a total power consumption value obtained by summing the power consumption values of the plurality of elevators, and the power suppression value is at least a predicted waiting time of the elevator , Determining the ratio to the total power suppression value according to the service index according to any of the number of passengers in the elevator and the estimated riding time of the elevator, the elevator is based on the power suppression value, the maximum speed of each elevator, An energy saving operation system for elevators, which is operated with energy saving by adjusting acceleration or stop time . In an elevator energy-saving operation system that controls the operation of multiple elevators that service multiple floors,
A power profile calculation means for obtaining a time transition of the power usage value of each elevator as a power profile from at least one of the direction of the car, hall call, car call, number of passengers, and traffic information of the building;
A power suppression value calculation means for calculating a total power suppression value with a total power consumption value equal to or less than a threshold value from a total power profile obtained by summing the power profiles, and calculating the total power suppression value as a power suppression value for each elevator. When,
The power suppression value is determined by determining a ratio to the total power suppression value according to a service index according to at least one of the estimated waiting time of each elevator, the number of passengers in each elevator, and the estimated boarding time of each elevator. The elevator is operated in an energy-saving manner by adjusting the maximum speed, acceleration, or stop time of each elevator based on the power suppression value . The thing of Claim 1 or 2 WHEREIN: By calculating the reciprocal number of the ratio of the said service parameter | index of each elevator, making the ratio with respect to the whole of the calculated value into an electric power suppression value distribution parameter | index, and multiplying the said total electric power suppression value. An elevator energy-saving operation system characterized in that the power suppression value of each elevator is used .   3. The elevator energy saving operation system according to claim 1, wherein the threshold value is determined based on a power capacity of a power receiving facility of the elevator.   3. The elevator energy saving operation system according to claim 1, wherein the threshold value is determined based on a power capacity determined by a building total power management means for managing a total power value of the building.   3. The power usage value of each elevator according to claim 1 or 2, wherein the elevator car position, speed and direction at the time of departure, and the speed, acceleration, and speed at which the elevator next arrives at the stop position. The elevator energy saving operation system is calculated from the weight of the car, the weight of the counterweight, and the total weight of the passengers.   3. The elevator energy saving operation system according to claim 1, wherein the elevator in a standby state is regeneratively operated.

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