Power control system, power control device, and program

1 . A power control system for performing power control such that a target power set for a group including a plurality of consumers is not exceeded, the system comprising:

a control information generation server that generates pieces of control information of equipment devices of the consumers; and

a control device that controls power usage of the equipment devices of the consumers in accordance with the generated pieces of control information, wherein

the control information generation server includes a first processor, wherein the first processor is configured to:

set, for each of predetermined time periods, limit values, each for power usage of one of the consumers included in the group, such that the target power of the group is not exceeded, and generate the pieces of control information, each for an equipment device of one of the consumers, including the limit values;

transmit the generated pieces of control information to the control device that controls the equipment devices of the consumers before a start of a time period in which control is performed by the control device, and

the control device includes a second processor having a storage that holds the received pieces of control information, wherein

the second processor is configured to:

receive the pieces of control information of the equipment devices for each of the time periods, the equipment devices being to be controlled by the control device; and

control for each of the time periods, the power usage of the equipment devices of the consumers in accordance with pieces of control information for the time period among the pieces of control information held in the storage,

wherein the first processor is further configured to transmit pieces of control information for respective equipment devices of the plurality of consumers included in the group for a time period to the control device that controls the equipment devices to be controlled by using the pieces of control information, wherein

a first group of the equipment devices receives the pieces of control information for decreasing the limit values for the time period compared with the limit values for a time period immediately preceding the time period,

a second group of the equipment devices receives the pieces of control information for increasing the limit values for the time period compared with the limit values for the time period immediately preceding the time period, and

the pieces of control information for respective equipment devices are transmitted to the first group of the equipment devices earlier than to the second group of the equipment devices.

2 . The power control system according to claim 1 , wherein the first processor is further configured to:

generate, for each predetermined unit period, the pieces of control information for a plurality of time periods included in the unit period; and

transmit, before the unit period starts, the pieces of control information for each of the time periods in the unit period; and

the second processor is further configured to receive and hold, before the unit period starts, the pieces of control information for each of the time periods in the unit period.

3 . The power control system according to claim 1 , wherein the first processor is further configured to:

set limit values of the plurality of consumers included in the group for a time period such that a sum of differences, for consumers for which limit values are set to be higher for the time period than limit values for a time period immediately preceding the time period, between the limit values for the time period and the limit values for the time period immediately preceding the time period is not larger than a sum of differences, for consumers for which limit values are set to be lower for the time period than limit values for the time period immediately preceding the time period, between the limit values for the time period and the limit values for the time period immediately preceding the time period.

4 . The power control system according to claim 1 , wherein the first processor is further configured to transmit the pieces of control information for decreasing the limit values for the time period compared with the limit values for the time period immediately preceding the time period, in descending order of an amount of decrease, and transmit the pieces of control information for increasing the limit values for the time period compared with the limit values for the time period immediately preceding the time period, in ascending order of an amount of increase.

5 . The power control system according to claim 1 , wherein the first processor is further configured to transmit pieces of control information for respective equipment devices of the plurality of consumers included in the group for a time period to the control device that controls the equipment devices to be controlled by using the pieces of control information, such that the pieces of control information are sequentially transmitted for each of the consumers included in the group in an order in which, at a time point at which transmission of a piece of control information of a consumer among the consumers included in the group is completed, a total of limit values in all pieces of control information that have been transmitted so far is not larger than a total of limit values of corresponding consumers for a time period immediately preceding the time period.

6 . The power control system according to claim 1 , wherein when pieces of control information for a time period are not received before the time period starts, the second processor is configured to control the equipment devices such that limit values in pieces of control information for a time period preceding the time period are not exceeded, the pieces of control information for the time period preceding the time period being held in the storage.

7 . A power control device included in a system for performing power control such that a target power set for a group including a plurality of consumers is not exceeded, the power control device controlling power usage of an equipment device of a consumer in the group, the power control device comprising a processor having a storage, wherein

the processor is configured to:

receive control information for an equipment device of each of the consumers included in the group for each of predetermined time periods, the control information including a limit value of power usage of the consumer, the limit value being set such that the target power of the group is not exceeded;

store the control information received in the storage; and

control, for each of the time periods, the power usage of the equipment device of the consumer in accordance with control information for the time period within control information stored in the storage,

wherein the processor is further configured to transmit pieces of control information for respective equipment devices of the plurality of consumers included in the group for a time period to the power control device that controls the equipment devices to be controlled by using the pieces of control information, wherein

a first group of the equipment devices receives the pieces of control information for decreasing the limit values for the time period compared with the limit values for a time period immediately preceding the time period,

a second group of the equipment devices receives the pieces of control information for increasing the limit values for the time period compared with the limit values for the time period immediately preceding the time period, and

the pieces of control information for respective equipment devices are transmitted to the first group of the equipment devices earlier than to the second group of the equipment devices.

8 . The power control device according to claim 7 , wherein when control information for a time period is not received before the time period starts, the processor is further configured to control the equipment device such that a limit value in control information for a time period preceding the time period is not exceeded, the control information for the time period preceding the time period being held in the storage.

9 . A non-transitory computer readable medium storing a program for causing a computer for controlling a power control device included in a system for performing power control such that a target power set for a group including a plurality of consumers is not exceeded, the power control device controlling power usage of an equipment device of a consumer in the group, to perform functions of:

receiving control information for an equipment device of each of the consumers included in the group for each of predetermined time periods, the control information including a limit value of power usage of the consumer, the limit value being set such that the target power of the group is not exceeded;

controlling, for each of the time periods, the power usage of the equipment device of the consumer in accordance with control information for the time period within control information stored in a storage of the computer that stores the control information received; and

transmitting pieces of control information for respective equipment devices of the plurality of consumers included in the group for a time period to the power control device that controls the equipment devices to be controlled by using the pieces of control information, wherein

a first group of the equipment devices receives the pieces of control information for decreasing the limit values for the time period compared with the limit values for a time period immediately preceding the time period,

a second group of equipment devices receives the pieces of control information for increasing the limit values for the time period compared with the limit values for the time period immediately preceding the time period, and

the pieces of control information for respective equipment devices are transmitted to the first group of the equipment devices earlier than to the second group of the equipment devices.