JP2020188648A - Demand response system and method - Google Patents

Abstract

To appropriately automatically select a consumer who can reduce the total reduction amount specified in response to a power saving request.SOLUTION: When a requested consumer notifies the actual reduction shortage of the requested consumer for the reduction amount specified in a reduction request, a consumer selection unit 15B adds the reduction shortage to the total reduction amount, and recalculates the total reduction amount for re-request, searches a consumer DB 14 for a group with a target value having a smallest difference from the obtained total reduction amount for re-request as a requested group, and reselects all the consumers who belong to the requested group as the requested consumers, and a request instruction unit 15C makes a request for reduction of power consumption to each of the reselected requested customers.SELECTED DRAWING: Figure 1

Description

The present invention relates to a demand response technique for selecting a request destination customer as a request destination from a plurality of consumers and instructing a request for reduction of power consumption in response to a power saving request from a power supplier.

If the power consumption temporarily rises due to the concentration of operations of equipment that consumes power and the power supply becomes tight, the power supply from the power supplier will be insufficient. In order to avoid the above, it has been proposed from the power supplier side to make a demand control request for adjusting the power consumption amount, that is, a power saving request (see, for example, Patent Document 1). In general, as disclosed in Patent Document 1, a demand response (Demand Response:) is defined as changing a power consumption pattern so that a consumer suppresses the use of power in response to a power saving request from the power supplier side. Demand response).

International release WO2016 / 186081

In response to power saving requests from power suppliers such as electric power companies, the amount of power consumption that can be reduced by individual consumers is limited to some extent. For this reason, an aggregator located between the power supplier and the consumer manages the power demand of a plurality of registered consumers in a bundle, and saves power from the power supplier in the demand response. Services are being provided to allocate requests to these registered consumers. As a result, it is possible to efficiently carry out demand response and realize a larger-scale demand response.

Normally, the amount of reduction (negawatt) specified in the power saving request from the power supplier changes depending on the supply and demand situation of power, and the timing of the actual power saving request is also irregular, and the amount of reduction changes in a short time. There is also. Therefore, it is necessary to appropriately select the requested customers who are the target of power saving from among the registered consumers and instruct the reduction request as soon as possible from the time when the power saving request is made.

However, even if a request for reduction is instructed to the requesting customer, the power consumption is not necessarily reduced by the amount instructed by the requesting customer. Cases in which the requested customer has an excess or deficiency in the amount of power reduction due to the convenience of the requested customer, such as the operating status of the equipment, and the actual power consumption that can be reduced greatly deviates from the specified total reduction amount. Can be considered. In such a case, there is a problem that an accurate demand response cannot be realized in response to a power saving request from a power supplier.

The present invention is for solving such a problem, and even if the power reduction amount is excessive or deficient in the requesting customer, the requesting destination can respond to the total reduction amount specified in response to the power saving request. The purpose is to provide a demand response technology that can automatically select consumers appropriately.

In order to achieve such an object, the demand response system according to the present invention selects the requested customer to be the request destination in response to the power saving request from the power supplier from among the registered customers registered in advance. Demand belonging to the group for each group consisting of a combination of a computer that is selected and requests the requested customer to reduce power consumption and one or more customers selected from the registered customers. The computer is provided with a consumer database that stores the target value of power reduction in charge of the entire house, and the computer selects the group having the target value having the smallest difference from the total reduction amount specified in the power saving request. A consumer selection unit that searches the database as a request destination group and selects all the consumers belonging to the request destination group as the first request destination customer, and consumes each of the first request destination customers. A request instruction unit for making a power reduction request is provided, and the consumer selection unit is notified of a difference between the actual reduction amount and the reduction amount specified in the reduction request by the first request destination customer. , The difference is added to or subtracted from the total reduction amount to calculate the total reduction amount for re-request, and the group having the target value having the smallest difference from the obtained total reduction amount for re-request is obtained in the consumer database. Search as a new request destination group from, and reselect all the consumers belonging to the new request destination group as the second request destination customer, and the request instruction unit is the second request destination customer. A request for reduction of power consumption is made to each of them.

Further, in one configuration example of the demand response system according to the present invention, before the request instruction unit makes the reduction request to the second request destination customer, all of the first request destination customers are requested. On the other hand, the reduction request being requested is canceled.

Further, in one configuration example of the demand response system according to the present invention, a non-selected customer whose request instruction unit is not selected as the second requested customer among the first requested customers. For all of the above, the reduction request being requested is canceled.

Further, in one configuration example of the demand response system according to the present invention, the customer selection unit is a group including all of the first requested customers, and the total reduction amount for the re-request is obtained. The group having the target value having the smallest difference from the above is searched as the new request destination group from the customer database, and all the customers belonging to the new request destination group are set as the second request destination customer. It is intended to be reselected.

Further, in one configuration example of the demand response system according to the present invention, before the request instruction unit makes the reduction request to all the consumers who are requesting the reduction in response to the previous power saving request. This is to cancel the reduction request made last time.

Further, in one configuration example of the demand response system according to the present invention, the request instruction unit is not selected as the request destination customer among the customers who are requesting reduction in response to the previous power saving request. All of the selected consumers will be canceled from the previous reduction request.

Further, in the demand response method according to the present invention, the request destination customer to be the request destination is selected from the pre-registered registered consumers in response to the power saving request from the power supplier, and the request destination customer is selected. For each group consisting of a combination of a computer that requests the reduction of power consumption and one or more consumers selected from the registered consumers, the power reduction that is in charge of all the consumers belonging to the group. A group of demand response methods used in a demand response system including a consumer database that stores target values, wherein the computer has a target value having the smallest difference from the total reduction amount specified in the power saving request. Is searched from the consumer database as a request destination group, and all the consumers belonging to the request destination group are selected as the first request destination customer. The customer selection step and the computer make the first request. The customer selection step includes a request instruction step for requesting each of the destination consumers to reduce the power consumption, and the customer selection step is an actual reduction with respect to the reduction amount specified in the reduction request from the first request destination customer. When the difference from the amount is notified, the difference is added to or subtracted from the total reduction amount to calculate the total reduction amount for re-request, and the target value having the smallest difference from the obtained total reduction amount for re-request. The request instruction includes a step of searching the group having the above as a new request destination group from the customer database and reselecting all the consumers belonging to the new request destination group as the second request destination customer. The step includes a step of requesting each of the second requested consumers to reduce the power consumption.

Further, in one configuration example of the demand response method according to the present invention, the customer selection step is a group including all of the first requested customers, and the total reduction amount for the re-request The group having the target value having the smallest difference from the above is searched as the new request destination group from the customer database, and all the customers belonging to the new request destination group are set as the second request destination customer. It involves a step of reselection.

According to the present invention, even if the requested customer has an excess or deficiency of the power reduction amount due to the convenience of the requested customer such as the operating status of the equipment, the power saving request is specified by the power supplier. It is possible to appropriately and automatically select the requested customer who can handle the total reduction amount. Therefore, as a result, it is possible to realize an accurate demand response in response to the power saving request from the power supplier.

FIG. 1 is a block diagram showing a configuration of a demand response system. FIG. 2 is an explanatory diagram showing an example of registration of group data in the consumer database according to the first embodiment. FIG. 3 is an explanatory diagram showing an example of registration of customer data in the customer database according to the first embodiment. FIG. 4 is a flowchart showing the demand response processing according to the first embodiment. FIG. 5 is a sequence diagram showing an example of demand response operation according to the first embodiment. FIG. 6 is an explanatory diagram showing an example of registering group data in the consumer database according to the second embodiment. FIG. 7 is an explanatory diagram showing an example of registration of customer data in the customer database according to the second embodiment. FIG. 8 is a flowchart showing the demand response processing according to the second embodiment. FIG. 9 is a sequence diagram showing an example of demand response operation according to the second embodiment.

Next, an embodiment of the present invention will be described with reference to the drawings.
[First Embodiment]
First, the demand response system 10 according to the first embodiment of the present invention will be described with reference to FIG. FIG. 1 is a block diagram showing a configuration of a demand response system.
As shown in FIG. 1, the demand response system 10 operates as an aggregator provided between the power supplier P and the registered consumer R, and responds to a power saving request from the power supplier P by the registered consumer. This is a computer system that selects a request destination customer as a request destination from R and instructs a request for reduction of power consumption.

In the following, a case where four consumers A, B, C, and D are registered in advance by a contract or the like as a registered consumer R corresponding to a demand response with the power supplier P will be described as an example. The number of registered consumers R is not limited to 4, and if it is 2 or more, the present invention can be applied in the same manner as below.

The demand response system 10 includes a communication device 11, an operation input device 12, a screen display device 13, a consumer database 14, and a computer 15 as main configurations. These devices may be individual devices connected via a communication line, or a plurality or all of them may be collectively mounted in one device such as a server.

The communication device 11 has a function of performing data communication with the power supplier P and the registered consumer R via the communication line L and the communication network NW.
The operation input device 12 includes an operation input device such as a keyboard, a mouse, and a touch panel, and has a function of detecting an operator's operation and outputting it to a computer 15.
The screen display device 13 is composed of a screen display device such as an LCD, and has a function of displaying various screens such as a menu screen, a setting screen, a power consumption trend screen, and a demand response processing status screen output from the computer 15. ing.

The consumer database (hereinafter referred to as a consumer DB) 14 is composed of a storage device such as a hard disk, and belongs to the group for each group consisting of a combination of one or a plurality of consumers selected from the registered consumers R. It has a function of storing the target value of power reduction in charge of the entire consumer and a function of storing the individual reduction amount that can be reduced by the registered customer R for each registered customer R.

FIG. 2 is an explanatory diagram showing an example of registration of group data in the consumer database according to the first embodiment. In the example of FIG. 2, the combination of the consumers belonging to the group and the target value of the power reduction in charge of all the consumers belonging to the group are registered for each group. For example, group 1 consists of a combination of consumers A and B, and the target value is 180 kW. Group 2 consists of a combination of consumers B and C, and the target value is 200 kW. Group 3 is composed of a combination of consumers A, B, and C, and the target value is 210 kW. Group 4 is composed of a combination of consumers A and C, and the target value is 220 kW. Group 5 is composed of a combination of consumers A, C, and D, and the target value is 250 kW. Each of these groups is registered and configured in advance so that each target value can correspond to the range of the reduction amount specified by the power saving request from the power supplier P.

FIG. 3 is an explanatory diagram showing an example of registration of customer data in the customer database according to the first embodiment. In the example of FIG. 2, individual reduction amounts that can be reduced independently by the consumer are registered for each of the consumers A, B, C, and D. For example, the individual reduction amount of the consumer A is 100 kW, and the individual reduction amount of the customer B is 80 kW. The individual reduction amount of the consumer C is 120 kW, and the individual reduction amount of the customer D is 30 kW.

The computer 15 is composed of a computer having a CPU and its peripheral circuits, and by realizing various processing units in cooperation with the CPU and a program, the request destination becomes a request destination in response to a power saving request from the power supply provider P. This is a device that selects a consumer from among the registered consumers R registered in advance and requests the requested customer to reduce power consumption.
The computer 15 includes a request acquisition unit 15A, a consumer selection unit 15B, and a request instruction unit 15C as main processing units.

The request acquisition unit 15A has a function of acquiring the latest total reduction amount specified in the power saving request from the power saving request from the power supplier P received by the communication device 11 via the communication network NW and the communication line L. Have.

The consumer selection unit 15B selects the group having the closest target value, that is, the group having the smallest difference (absolute value) between the total reduction amount specified by the power saving request acquired by the request acquisition unit 15A and the total reduction amount. It has a function of searching as a request destination group from the customer DB 14 and a function of selecting all the customers belonging to the obtained request destination group as request destination consumers.
At this time, the consumer selection unit 15B may search the consumer DB 14 as a request destination group for a group having a target value that is equal to or greater than the total reduction amount and has the smallest difference from the total reduction amount. Good.

In addition, when the requesting customer notifies the difference between the reduction amount specified in the reduction request and the actual reduction amount by the requesting customer, the consumer selection unit 15B adds the difference to the total reduction amount. The group having the target value with the smallest difference between the function of adding and recalculating the total reduction amount for re-request and the obtained total reduction amount for re-request is searched from the consumer DB 14 as the request destination group. , It has a function to reselect all the consumers belonging to the request destination group as the request destination customers.

The request instruction unit 15C transmits a reduction request from the communication device 11 via the communication line L and the communication network NW for each request destination customer selected by the consumer selection unit 15B, so that each of the request destination customers It has a function of requesting reduction of power consumption and a function of instructing a consumer who requested reduction in the previous request for power saving to cancel the previous request for reduction.

[Operation of the first embodiment]
Next, the operation of the demand response system 10 according to the present embodiment will be described with reference to FIG. FIG. 4 is a flowchart showing the demand response processing according to the first embodiment.
The computer 15 executes the demand response process of FIG. 4 in response to the power saving request from the power supplier P.

First, the request acquisition unit 15A acquires the latest total reduction amount specified in the power saving request from the power saving request from the power supplier P (step S100).

Next, the consumer selection unit 15B accesses the customer DB 14 and searches for a group having a target value having the smallest difference from the total reduction amount acquired by the request acquisition unit 15A as a request destination group (step S101). ), All the customers belonging to the obtained request destination group are selected as the request destination customers (first request destination customers) (step S102).

Subsequently, the request instruction unit 15C selects the non-selected previously requested customer who was not newly selected as the requested customer (first requested customer) in step S102 among the previous requested customers. , The communication device 11 transmits the request cancellation via the communication line L and the communication network NW to instruct the cancellation of the previous reduction request (step S103).

Next, the request instruction unit 15C sends each of the new request destination consumers (first request destination customer) a newly generated reduction request from the communication device 11 via the communication line L and the communication network NW. By transmitting, a new power consumption reduction request is made (step S104). As a result, each request destination customer (first request destination customer) reduces its own power consumption by the amount that can be reduced in advance in response to the reduction request from the demand response system 10.

After that, the consumer selection unit 15B confirms whether or not there is an actual reduction shortage for the reduction amount specified in the reduction request from any request destination customer (first request destination customer) (step S105). If there is no notification of the reduction shortage (step S105: NO), the series of demand response processing is terminated.

On the other hand, when the notification of the reduction shortage is received (step S105: YES), the consumer selection unit 15B adds the notified reduction shortage to the total reduction amount and recalculates the total reduction amount for re-request. (Step S106), the process returns to step S101.
As a result, the consumer selection unit 15B accesses the consumer DB 14 and searches for the group having the target value having the smallest difference from the total reduction amount for re-request as the request destination group (step S101). All the consumers belonging to the requested request group are selected as the request customers (second request customers) (step S102).

Subsequently, the request instruction unit 15C was not newly selected as the request destination customer (second request destination customer) in step S102 among the previous request destination customers (first request destination customer). Instructing the non-selected previously requested customer (first requested customer) to cancel the previous reduction request by transmitting the request cancellation from the communication device 11 via the communication line L and the communication network NW. (Step S103)

Next, the request instruction unit 15C makes a newly generated reduction request from the communication device 11 to each of the new request destination consumers (second request destination customer) via the communication line L and the communication network NW. By transmitting, a new power consumption reduction request is made (step S104). As a result, each requesting customer (second requesting customer) reduces its own power consumption by the amount that can be reduced in advance in response to the reduction request from the demand response system 10.

After that, the consumer selection unit 15B confirms whether or not there is a notification of the actual reduction shortage for the reduction amount specified in the reduction request from any request destination customer (second request destination customer) (step S105). If there is no notification of the reduction shortage (step S105: NO), the series of demand response processing is terminated.

On the other hand, when the notification of the reduction shortage is received (step S105: YES), the consumer selection unit 15B adds the notified reduction shortage to the total reduction amount and recalculates the total reduction amount for re-request. (Step S106), the process returns to step S101.
As a result, steps S101 to S104 are repeatedly executed based on the new total reduction amount recalculated, and when the reduction shortage is no longer notified from any of the requested customers (step S105: NO), a series of steps are taken. Demand response processing is completed.

In FIG. 4, the case where each requesting customer reduces his / her own power consumption by the amount that can be reduced in advance in response to the reduction request has been described as an example, but each requesting destination has each request for reduction. The amount of reduction of the consumer may be specified. At this time, the consumer selection unit 15B may acquire the amount that can be reduced of the requested customer from the customer DB 14 for each requested customer together with the search result of the requested group. Further, the request instruction unit 15C may separately acquire from the customer DB 14 for each request destination customer, or each registered customer R can be reduced before receiving the power saving request from the power supplier P. The amount may be acquired from the consumer DB 14, and the request instruction unit 15C may use these reductionable amounts.

Further, regarding the cancellation of the request regarding the reduction request transmitted last time, it may be transmitted to the previous request destination customer before transmitting the new reduction request in step S104. At this time, the request cancellation may be sent to all the previous requested customers, but if the previous requested customer is selected as a new requested customer, a new reduction request is sent after that. Therefore, it is possible to omit the transmission of request cancellation.

Therefore, the request instruction unit 15C cancels the previous reduction request for all the non-selected customers who were not selected as the new request destination customers among the customers who requested the reduction last time. You may. At this time, the request cancellation to the non-selected consumer may be sent at the same time as or after the new reduction request.
Also, if the previous request destination group and the new request destination group match, or if the previous total reduction amount is equal to the new total reduction amount, there is no change in the request destination customer, so all It may be possible to omit sending the request cancellation to the requesting customer.

In FIG. 4, the case where the actual reduction amount is smaller than the reduction amount specified in the reduction request and the difference indicates the reduction shortage is described as an example, but the present invention is not limited to this. If the actual reduction amount is larger than the reduction amount specified in the reduction request and the difference indicates the reduction excess amount, in step S106, the reduction excess amount is subtracted from the total reduction amount to recalculate the total reduction amount for re-request. do it.

[Operation example of the first embodiment]
Next, an operation example of the demand response system 10 according to the present embodiment will be described with reference to FIG. FIG. 5 is a sequence diagram showing an example of demand response operation according to the first embodiment. It is assumed that the group data shown in FIG. 2 and the customer data shown in FIG. 3 are registered in advance in the consumer DB 14. In the following, it is assumed that the consumer D has been selected as the previously requested customer at the time when the power saving request is received from the power supplier P, and the power consumption is being reduced.

When the computer 15 receives the power saving request from the power supplier P (step S110), the computer 15 sends a search request to the consumer DB 14 regarding the group having the target value having the smallest difference from the total reduction amount specified in the power saving request. Notify (step S111). Here, since 180 kW is specified as the total reduction amount, the group 1 having the target value of 180 kW is returned from the consumer DB 14 as a search result from the group data of FIG. 2 (step S112).

The computer 15 selects the obtained group 1 as the request destination group, and selects the demanders A and B belonging to the group 1 as the request destination customers (first request destination customers) (step S113).
Here, since the previous request destination customer is the consumer D and is different from the new request destination customers (first request destination customers) customers A and B, the computer 15 is set to the customer D. A request cancellation is transmitted to the request (step S114). As a result, the previous reduction request that has been executed by the consumer D is canceled, and the reduction of the power consumption is stopped.

After that, the computer 15 transmits a reduction request to these consumers A and B (step S115).
Here, for example, if the initial reduction amount of 100 kW cannot be reduced by the consumer A and the reduction is insufficient by 50 kW, the total reduction amount of 180 kW specified in the power saving request is applied to the total of the consumers A and B. Will save only 130kW, which is significantly less.

Therefore, for example, when the consumer A notifies the reduction shortage of 50 kW (step S116), the computer 15 adds the notified reduction shortage of 50 kW to the original total reduction amount of 180 kW, and the total for re-requesting. The reduction amount of 230 kW (= 180 kW + 50 kW) is recalculated (step S120).
Subsequently, the computer 15 notifies the customer DB 14 of a search request with the obtained total reduction amount for re-request as a target value (step S121). Here, since 230 kW is specified as the total reduction amount for re-request, from the group data of FIG. 3, the group 4 having the target value of 220 kW, which is the closest to the total reduction amount of 230 kW, is the customer as a search result. It is returned from DB 14 (step S122).

The computer 15 selects the obtained group 2 as the request destination group, and selects the demanders A and C belonging to the group 2 as the request destination customers (second request destination customers) (step S123).
Here, the previous request destination customers (first request destination customers) are consumers A and B, and the new request destination consumers (second request destination customers) are consumers A and C. Since they are different, the computer 15 transmits a request cancellation to the consumer B (step S124). As a result, the previous reduction request that has been made by the consumer B is canceled, and the reduction of the power consumption is stopped.

After that, the computer 15 transmits a reduction request to the new request destination customers (second request destination customers), the customers A and C (step S125).
As a result, consumer A will continue to reduce power consumption by 50 kW, and consumer C will start reducing power consumption by 120 kW. Consumers A and C will be asked to save electricity. Power saving of 170 kW, which is almost equal to the specified total reduction amount of 180 kW, will be implemented.

[Effect of the first embodiment]
As described above, in the present embodiment, the consumer DB 14 is in charge of the electric power of all the consumers belonging to the group for each group consisting of a combination of one or a plurality of consumers selected from the registered consumers R. The target value for reduction is stored, and in the computer 15, the consumer selection unit 15B selects the group having the target value having the smallest difference from the total reduction amount specified in the power saving request from the customer DB 14 as the request destination group. All the consumers belonging to the request destination group are selected as the request destination customer (first request destination customer), and the request instruction unit 15C selects the request destination customer (first request destination customer). ) Are requested to reduce power consumption.

In addition to this, the difference between the reduction amount specified in the reduction request from the requesting customer (first requesting customer) and the actual reduction by the requesting customer (first requesting customer). Is notified, the consumer selection unit 15B adds or subtracts the difference to the total reduction amount to recalculate the total reduction amount for re-request, and the difference from the obtained total reduction amount for re-request is the largest. A group having a small target value is searched from the consumer DB 14 as a request destination group, all the consumers belonging to the request destination group are reselected as request destination consumers (second request destination customers), and a request instruction is given. The unit 15C makes a request for reduction of power consumption to each of the reselected requesting customers (second requesting customer).

As a result, each group consisting of a combination of registered consumers R is associated with the target value for power reduction and is preset in the customer DB 14, so that it is designated in response to a power saving request from the power supplier P. By simply selecting a group with a target value close to the total reduction amount specified, it is possible to automatically and collectively appropriately select the customers who can reduce the specified total reduction amount as the requested customers. ..
Therefore, in the aggregator, when compared with the method in which the operator manually responds to the power saving request from the power supplier P, according to the present invention, it is not necessary to make the operator resident 24 hours a day, and it is extremely from the time when the power saving request is made. In a short time, the requesting customer can be appropriately selected and the reduction request can be instructed, the workload of the operator can be significantly reduced, and the service cost can be significantly reduced.

In addition, the requesting customer (first requesting customer) notified the actual reduction shortfall of the requesting customer (first requesting customer) for the reduction amount specified in the reduction request. In that case, the requesting customer (second requesting customer) is reselected based on the total reduction amount for re-requesting to which the shortage is added, and the power consumption reduction request is made. ..
For this reason, due to the convenience of the requesting customer (first requesting customer) such as the operating status of the equipment, the requesting customer may have an excess or deficiency in the amount of power reduction, and the power consumption that can be actually reduced is specified. Even in cases where there is a large deviation from the total reduction amount, a new request destination customer (second request destination customer) that can correspond to the total reduction amount can be appropriately and automatically selected. Therefore, as a result, it is possible to realize an accurate demand response in response to the power saving request from the power supplier.

Further, in the present embodiment, the request instruction unit 15C cancels the reduction request for all the first request destination consumers before making the reduction request to the second request destination customer. You may. As a result, after resetting the power reduction at the first requesting customer once, the power reduction at the second requesting customer can be started. Therefore, even when the power consumption reduction request is switched from the first request destination customer to the second request destination customer, it is possible to realize an appropriate power reduction in response to the power saving request from the power supplier P.

Further, in the present embodiment, the request instruction unit 15C cancels the reduction request for all the non-selected customers who are not selected as the second requested customers among the first requested customers. May be done. As a result, the reduction request is not canceled for the first requesting customer who needs continuous power reduction, so that it is not necessary to stop and restart the equipment in a short period of time, and the equipment does not need to be restarted. The burden on electricity can be eased.

Further, in the present embodiment, the request instruction unit 15C cancels the previous reduction request before making the reduction request to all the consumers who are requesting the reduction in response to the previous power saving request. You may do so. As a result, after resetting the power reduction requested for reduction in response to the previous power saving request, it is possible to start the power reduction requested by the new requesting customer. Therefore, it is possible to realize an appropriate power reduction in response to the power saving request from the power supplier P.

Further, in the present embodiment, the request instruction unit 15C responds to a non-selected consumer who has not been newly selected as the requested destination consumer among the consumers who are requesting reduction in response to the previous power saving request. , You may cancel the reduction request made last time. As a result, the reduction request will not be canceled for consumers who need continuous power reduction, so it will not be necessary to stop and restart the equipment in a short period of time, and the burden on the equipment will be eased. can do.

[Second Embodiment]
Next, the demand response system 10 according to the second embodiment of the present invention will be described.
In the first embodiment, when the second request destination customer is selected, the total reduction amount for re-request is calculated by adding or subtracting the difference to the total reduction amount, and the total reduction amount for re-request obtained is obtained. The case where the group having the target value with the smallest difference from the target value is searched as a new request destination group and all the consumers belonging to this new request destination group are reselected as the second request destination customer has been described.

In this case, there is a possibility that one of the first requested customers is not included in the second requested customer, and the excluded customers excluded from the second requested customer are excluded. When making a reduction request to the second requesting customer, it is necessary to cancel the reduction request immediately. For this reason, the excluded customers will start and stop the equipment and restart it in a short period of time, which will increase the burden on the equipment.

In the present embodiment, in order to reduce the burden on such equipment, when the second request destination customer is selected in the customer selection unit 15B, the group including all of the first request destination customers Search the customer database for the group that has the target value with the smallest difference from the total reduction amount for re-request as a new request destination group, and all the customers belonging to the new request destination group. Is reselected as the second requested customer.

FIG. 6 is an explanatory diagram showing an example of registering group data in the consumer database according to the second embodiment. In the example of FIG. 2, for each group, a combination of consumers belonging to the group and a target value of power reduction in charge of all the consumers belonging to the group are registered. For example, group 1 consists of a combination of consumers A and B, and the target value is 180 kW. Group 2 consists of a combination of consumers B and C, and the target value is 200 kW. Group 3 consists of a combination of consumers A and C, and the target value is 220 kW. Group 4 is composed of a combination of consumers A, B, and D, and the target value is 220 kW. Group 5 is composed of a combination of consumers A, C, and D, and the target value is 260 kW. Each of these groups is registered and configured in advance so that each target value can correspond to the range of the reduction amount specified by the power saving request from the power supplier P.

FIG. 7 is an explanatory diagram showing an example of registration of customer data in the customer database according to the second embodiment. In the example of FIG. 2, individual reduction amounts that can be reduced independently by the consumer are registered for each of the consumers A, B, C, and D. For example, the individual reduction amount of the consumer A is 100 kW, and the individual reduction amount of the customer B is 80 kW. Further, the individual reduction amount of the consumer C is 120 kW, and the individual reduction amount of the customer D is 40 kW.
Other configurations according to the present embodiment are the same as those of the first embodiment, and detailed description of each is omitted.

[Operation of the second embodiment]
Next, the operation of the demand response system 10 according to the present embodiment will be described with reference to FIG. FIG. 8 is a flowchart showing the demand response processing according to the second embodiment.
The computer 15 executes the demand response process of FIG. 8 in response to the power saving request from the power supply provider P.

First, the request acquisition unit 15A acquires the latest total reduction amount specified in the power saving request from the power saving request from the power supplier P (step S200).

Next, the consumer selection unit 15B accesses the customer DB 14 and searches for a group having a target value having the smallest difference from the total reduction amount acquired by the request acquisition unit 15A as a request destination group (step S201). ), All the customers belonging to the obtained request destination group are selected as the request destination customers (first request destination customers) (step S202).

Subsequently, the request instruction unit 15C selects the unselected previously requested customer who was not newly selected as the requested customer (first requested customer) in step S202 among the previous requested customers. , The communication device 11 transmits the request cancellation via the communication line L and the communication network NW to instruct the cancellation of the previous reduction request (step S203).

Next, the request instruction unit 15C sends each of the new request destination consumers (first request destination customer) a newly generated reduction request from the communication device 11 via the communication line L and the communication network NW. By transmitting, a new power consumption reduction request is made (step S204). As a result, each request destination customer (first request destination customer) reduces its own power consumption by the amount that can be reduced in advance in response to the reduction request from the demand response system 10.

After that, the consumer selection unit 15B confirms whether or not there is a notification of the actual reduction shortage for the reduction amount specified in the reduction request from any request destination customer (first request destination customer) (step S205). If there is no notification of the reduction shortage (step S205: NO), a series of demand response processing is terminated.

On the other hand, when the notification of the reduction shortage is received (step S205: YES), the consumer selection unit 15B adds the notified reduction shortage to the total reduction amount and recalculates the total reduction amount for re-request. (Step S206).
As a result, the consumer selection unit 15B is a group that accesses the consumer DB 14 and includes all of the previously selected requested customers (first requested customers), and is a total for re-requesting. The group having the target value with the smallest difference from the reduction amount is searched as the request destination group (step S207), and all the customers belonging to the obtained request destination group are the request destination consumers (second request destination demand). Select as home) (step S208).

Subsequently, the request instruction unit 15C transmits a newly generated reduction request from the communication device 11 to each of the new request destination consumers (second request destination customer) via the communication line L and the communication network NW. By doing so, a new power consumption reduction request is made (step S209). As a result, each requesting customer (second requesting customer) reduces its own power consumption by the amount that can be reduced in advance in response to the reduction request from the demand response system 10.

After that, the consumer selection unit 15B confirms whether or not there is an actual reduction shortage for the reduction amount specified in the reduction request from any request destination customer (second request destination customer) (step S205). If there is no notification of the reduction shortage (step S205: NO), a series of demand response processing is terminated.

On the other hand, when the notification of the reduction shortage is received (step S205: YES), the consumer selection unit 15B adds the notified reduction shortage to the total reduction amount and recalculates the total reduction amount for re-request. (Step S206).
As a result, steps S207 to S209 are repeatedly executed based on the new total reduction amount recalculated, and when the reduction shortage is no longer notified from any of the requested customers (step S205: NO), a series of steps are taken. Demand response processing is completed.

In FIG. 8, the case where the actual reduction amount is smaller than the reduction amount specified in the reduction request and the difference indicates the reduction shortage is described as an example, but the present invention is not limited to this. If the actual reduction amount is larger than the reduction amount specified in the reduction request and the difference indicates the reduction excess amount, in step S206, the reduction excess amount is subtracted from the total reduction amount to recalculate the total reduction amount for re-request. do it.

[Operation example of the second embodiment]
Next, an operation example of the demand response system 10 according to the present embodiment will be described with reference to FIG. FIG. 9 is a sequence diagram showing an example of demand response operation according to the second embodiment. It is assumed that the group data shown in FIG. 6 and the customer data shown in FIG. 7 are registered in advance in the consumer DB 14. In the following, it is assumed that the consumer D has been selected as the previously requested customer at the time when the power saving request is received from the power supplier P, and the power consumption is being reduced.

When the computer 15 receives the power saving request from the power supplier P (step S210), the computer 15 notifies the consumer DB 14 of the search request with the total reduction amount specified in the power saving request as the target value (step S211). Here, since 180 kW is specified as the total reduction amount, the group 1 having the target value of 180 kW is returned from the consumer DB 14 as a search result from the group data of FIG. 6 (step S212).

The computer 15 selects the obtained group 1 as the request destination group, and selects the demanders A and B belonging to the group 1 as the request destination customers (first request destination customers) (step S213).
Here, since the previous request destination customer is the consumer D and is different from the new request destination customers (first request destination customers) customers A and B, the computer 15 is set to the customer D. A request cancellation is transmitted to the request (step S214). As a result, the previous reduction request that has been executed by the consumer D is canceled, and the reduction of the power consumption is stopped.

After that, the computer 15 transmits a reduction request to these consumers A and B (step S215).
Here, for example, if the initial reduction amount of 100 kW cannot be reduced by the consumer A and the reduction is insufficient by 50 kW, the total reduction amount of 180 kW specified in the power saving request is combined with the consumers A and B. From this point on, only 130 kW, which is significantly less, can be saved.

Therefore, for example, when the consumer A notifies the reduction shortage of 50 kW (step S216), the computer 15 adds the notified reduction shortage of 50 kW to the original total reduction amount of 180 kW for re-request. The total reduction amount of 230 kW (= 180 kW + 50 kW) is recalculated (step S220).
Subsequently, the computer 15 is a group including all of the previously requested customers (first requested customers), and the target value having the smallest difference from the obtained total reduction amount for re-requesting. The search request for the group having the above is notified to the consumer DB 14 (step S221).

Here, since 230 kW is specified as the total reduction amount for re-request, from the group data of FIG. 3, two groups 3 and 4 having the closest target value 220 kW to the total reduction amount of 230 kW are candidates. Of these, Group 3 is a combination of consumers A and C, and does not include customer B included in the previous request destination customer (first request destination customer). On the other hand, Group 4 is a combination of consumers A, B, and D, and includes all the consumers A and B included in the previous request destination customer (first request destination customer). Therefore, the group 4 is returned from the consumer DB 14 as a search result (step S222).

The computer 15 selects the obtained group 4 as the request destination group, and reselects the demanders A, B, and D belonging to the group 4 as the request destination customers (second request destination customers) (step S223). , A reduction request is transmitted to consumers A, B, and D who are new request destination consumers (second request destination customers) (step S224).
As a result, consumer A will continue to reduce power consumption by 50 kW, consumer B will continue to reduce power consumption by 80 kW, and consumer D will start reducing power consumption by 40 kW. Therefore, the total power saving of 170 kW, which is almost equal to the total reduction amount of 180 kW specified in the power saving request, will be implemented for the consumers A, B, and D in total.

[Effect of the second embodiment]
As described above, in the case of selecting the second request destination customer in the customer selection unit 15B, the present embodiment is a group including all of the first request destination customers and is for re-request. The group with the target value with the smallest difference from the total reduction amount of is searched as a new request destination group from the customer database, and all the customers belonging to the new request destination group are the second request destination customers. It is intended to be reselected as.

As a result, all of the first requested customers are selected as the second requested customers, and when making a reduction request to the second requested customer, the first requested demand There is no need to cancel the request at any of the houses. For this reason, neither of the first requested customers is an excluded customer excluded from the second requested customer, so that the equipment is started and stopped in a short period of time, which is executed by the excluded customer. You can avoid a reboot. As a result, the burden on the equipment and the burden on the consumer can be reduced, and a better demand response service can be provided.

[Extension of Embodiment]
Although the present invention has been described above with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the structure and details of the present invention within the scope of the present invention. In addition, each embodiment can be implemented in any combination within a consistent range.

In the above-described embodiment, it is conceivable that a plurality of groups having the same level of target values are registered as the groups registered in the consumer DB 14. At this time, in response to the power saving request from the power supplier P, it is necessary to select any one of the groups having the same level of target value as the request destination group.

In such a case, the consumer selection unit 15B compares the consumers belonging to the group with the requested customers selected in response to the immediately preceding power saving request for each group having the same level of target value. Then, a group containing more consumers that match the requested customer being selected may be selected as the requested group. At this time, regarding whether or not the target value is included in the same level range, for example, if the range of a certain allowable range based on the total reduction amount specified in the power saving request is set as the same level range. Good.

As a result, the customer who matches the request destination customer selected in response to the immediately preceding power saving request is selected as the new request destination customer. Therefore, many of the new customers can continue to reduce power consumption.
When the requesting customer reduces the power consumption in response to the reduction request from the demand response system 10, the equipment in operation is actually suspended, and the device is restarted when the reduction request is completed. Will be done. However, when starting and stopping, a considerable temporary load is generated on the equipment, which is a burden on the consumer.

As described above, when multiple groups with the same level of target value are registered, the group containing more consumers that match the selected request destination customer should be selected as the request destination group. As a result, many of the new customers can continue to reduce power consumption. Therefore, the number of times the equipment is started and stopped by the customer can be reduced, the burden on the customer can be reduced, and a better demand response service can be provided.

As a group with a target value close to the total reduction amount specified in the power saving request from the power supplier P, the range of the target value to be the same level is the total reduction specified in the power saving request. It may be determined empirically based on the fluctuation range of the amount, the number of registered customers R, the amount that can be reduced for each registered customer R, and the like.

10 ... Demand response system, 11 ... Communication device, 12 ... Operation input device, 13 ... Screen display device, 14 ... Consumer DB (customer database), 15 ... Computer, 15A ... Request acquisition unit, 15B ... Consumer selection unit , 15C ... Request indicator, P ... Power supplier, R ... Registered consumer, A, B, C, D ... Consumer, L ... Communication line, NW ... Communication network.

Claims (8)

A computer that selects a request destination customer to be a request destination from among pre-registered registered consumers in response to a power saving request from a power supplier, and requests the request destination customer to reduce power consumption. When,
For each group consisting of a combination of one or a plurality of consumers selected from the registered consumers, a consumer database for storing the target value of power reduction in charge of all the consumers belonging to the group is provided.
The calculator
The group having the target value with the smallest difference from the total reduction amount specified in the power saving request is searched as the request destination group from the customer database, and all the customers belonging to the request destination group are the first request. The consumer selection department that selects as the first customer,
It is equipped with a request instruction unit that requests each of the first request destination consumers to reduce power consumption.
When the first requesting customer notifies the difference between the actual reduction amount and the reduction amount specified in the reduction request, the consumer selection unit adds or subtracts the difference to the total reduction amount and re-does it. The total reduction amount for request is calculated, and the group having the target value with the smallest difference from the total reduction amount for re-request obtained is searched from the consumer database as a new request destination group, and the new request group is searched. Reselect all consumers in the requesting group as second requesting customers,
The request instruction unit is a demand response system characterized in that it makes a request for reduction of power consumption to each of the second request destination consumers. In the demand response system according to claim 1,
The request instruction unit is characterized in that it cancels the reduction request being requested to all of the first request destination customers before making the reduction request to the second request destination customer. Demand response system. In the demand response system according to claim 1 or 2.
The request instruction unit cancels the reduction request being requested for all the non-selected customers who are not selected as the second request destination customer among the first request destination customers. A demand response system featuring. In the demand response system according to claim 1,
The consumer selection unit refers to a group that includes all of the first requested customers and has a target value having the smallest difference from the total reduction amount for re-requesting. A demand response system characterized in that a search is performed from a database as the new request destination group, and all the consumers belonging to the new request destination group are reselected as the second request destination customer. In the demand response system according to any one of claims 1 to 4.
The request instruction unit cancels the previous reduction request before making the reduction request to all the consumers who are requesting reduction in response to the previous power saving request. system. In the demand response system according to any one of claims 1 to 4.
The request instruction unit requests the reduction of the previous reduction request to all the non-selected consumers who are not selected as the requested customers among the consumers who are requesting reduction in response to the previous power saving request. A demand response system characterized by canceling. A computer that selects a request destination customer to be a request destination from among pre-registered registered consumers in response to a power saving request from a power supplier, and requests the request destination customer to reduce power consumption. And, for each group consisting of a combination of one or a plurality of consumers selected from the registered consumers, a consumer database for storing the target value of power reduction in charge of all the consumers belonging to the group is provided. A demand response method used in a demand response system.
The computer searches the customer database for the group having the target value having the smallest difference from the total reduction amount specified in the power saving request as the request destination group, and all the consumers belonging to the request destination group are searched. The customer selection step to select as the first requested customer, and
The computer includes a request instruction step for requesting each of the first request destination consumers to reduce power consumption.
In the consumer selection step, when the first requesting customer notifies the difference from the actual reduction amount with respect to the reduction amount specified in the reduction request, the difference is added / subtracted to the total reduction amount and re-used. The total reduction amount for request is calculated, and the group having the target value with the smallest difference from the total reduction amount for re-request obtained is searched from the consumer database as a new request destination group, and the new request group is searched. Including the step of reselecting all the consumers belonging to the requesting group as the second requesting customer
The request response method is characterized in that the request instruction step includes a step of requesting each of the second request destination consumers to reduce power consumption. In the demand response method according to claim 7,
In the consumer selection step, a group including all of the first requested customers and having a target value having the smallest difference from the total reduction amount for re-requesting is selected as the customer. A demand response method comprising a step of searching a database as the new request destination group and reselecting all the consumers belonging to the new request destination group as the second request destination customer.

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