JP2020188647A - 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 previous requested consumer selected on the basis of previous power saving request notifies the excess or shortage of an actual reduction amount with respect to a previous reduction amount specified in a previous reduction request, a consumer selection unit 15B calculates the correction amount for the total reduction amount on the basis of the previous total reduction amount and the current total reduction amount and the excess or shortage, corrects the total reduction amount on the basis of the obtained correction amount, searches a consumer DB 14 for a group having a target value having a smallest difference from the corrected total reduction amount as a requested group, and selects all the consumers who belong to the requested group as requested customers, and a request instruction unit 15C makes a request for reduction of power consumption to each of the requested consumers.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 period of time. There is also. For example, in the 2018 VPP (Virtual Power Plant) demonstration experiment, there are cases where the amount of reduction was changed in a short period of 15 minutes at the shortest.
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. In addition, 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. Depending on the convenience of the requesting customer, such as the operating status of the equipment, the actual power consumption that can be reduced may be less than the specified total reduction amount.

Therefore, if a new total reduction amount is specified in the power saving request from the power supplier in a situation where a reduction shortage is occurring, the new total reduction amount can be satisfied while considering the reduction shortage. It is necessary to select a new requested customer. However, if a new requesting customer is selected with the total reduction amount corrected by simply adding or subtracting the reduction shortage to the new total reduction amount, the total reduction amount will be excessively changed and the requested destination demand. The house may change significantly. In such a case, the requesting customer is instructed to request reduction and cancel the reduction in a short period of time. Therefore, the requesting customer executes the shutdown and restart of the equipment in a short period of time. As a result, there is a problem that the burden on the equipment and the demanding customer increases.

The present invention is for solving such a problem, and even when the notification interval of the power saving request from the power supplier is short and the request destination customer has an excess or deficiency of the power reduction amount. The purpose is to provide a demand response technology that can appropriately and automatically select the requested customer in consideration of the equipment and the burden on the requested customer.

In order to achieve such an object, the demand response system according to the present invention selects the requested customer who is 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 selected and requesting the requested customer to reduce power consumption and one or a plurality of 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 customer selection unit that searches the database as a request destination group and selects all the consumers belonging to the request destination group as request destination consumers, and each of the request destination consumers are requested to reduce power consumption. The customer selection unit is provided with a request instruction unit, and the consumer selection unit is an excess or deficiency of the actual reduction amount with respect to the previous reduction amount specified in the previous reduction request from the previous request destination customer selected based on the previous power saving request. If is notified, the total reduction amount specified in the previous power saving request, the current total reduction amount specified in the current power saving request, and the excess / deficiency amount are used as the basis for the correction for the total reduction amount. The amount is calculated, the total reduction amount of this time is corrected based on the correction amount obtained, and the group having the target value with the smallest difference from the total reduction amount of this time after correction is requested from the customer database. It is designed to be searched as a group.

Further, in one configuration example of the demand response system according to the present invention, the consumer selection unit sets the previous total reduction amount to D (t-1) and the current total reduction amount to D (t). When the excess or deficiency is Q (t-1), the correction amount ΔQ and the corrected total reduction amount D (t) of this time are calculated by the following equations.
ΔQ = Q (t-1) × D (t) / D (t-1)
D (t) = D (t) + ΔQ

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 one configuration example of the demand response system according to the present invention, a group in which the consumer selection unit has a target value that is equal to or greater than the total reduction amount and has the smallest difference from the total reduction amount. , The request destination group is searched from the customer database.

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 customer database as a request destination group, and all the customers belonging to the request destination group are selected as the first request destination customer. The customer selection step and the computer use the request destination customer. Each of the above is provided with a request instruction step for requesting reduction of power consumption, and the consumer selection step is the previous time specified in the previous reduction request from the previous request destination customer selected based on the previous power saving request. If the excess or deficiency of the actual reduction amount with respect to the reduction amount is notified, the previous total reduction amount specified in the previous power saving request and the current total reduction amount specified in the current power saving request and the excess or deficiency are described. The correction amount for the total reduction amount is calculated based on the minute, the total reduction amount is corrected based on the obtained correction amount, and the difference from the corrected total reduction amount is the smallest target value. It includes a step of searching the group having the above as a request destination group from the consumer database.

Further, in one configuration example of the demand response method according to the present invention, in the consumer selection step, the previous total reduction amount is D (t-1), and the current total reduction amount is D (t). When the excess or deficiency is set to Q (t-1), the step of calculating the correction amount ΔQ and the corrected total reduction amount D (t) of this time by the following equation is included.
ΔQ = Q (t-1) × D (t) / D (t-1)
D (t) = D (t) + ΔQ

Further, in one configuration example of the demand response method according to the present invention, the request instruction step is not selected as the request destination customer among the customers who are requesting reduction in response to the previous power saving request. It includes the step of canceling the previous reduction request for all selected consumers.

Further, in one configuration example of the demand response method according to the present invention, a group in which the consumer selection step is equal to or greater than the total reduction amount and has a target value having the smallest difference from the total reduction amount. , The step of searching the customer database as the request destination group is included.

According to the present invention, since the change range of the total reduction amount is reduced, the notification interval of the power saving request from the power supplier is short, and the requesting customer has an excess or deficiency of the power reduction amount. Even if this is the case, excessive changes in the total reduction amount can be suppressed. Therefore, it is possible to avoid a drastic change in the reduction request to the requesting customer, and as a result, it is possible to reduce the burden on the requesting customer.

FIG. 1 is a block diagram showing a configuration of a demand response system. FIG. 2 is an explanatory diagram showing an example of registering group data in the consumer database. FIG. 3 is an explanatory diagram showing an example of registration of consumer data in the consumer database. FIG. 4 is a flowchart showing the demand response process. FIG. 5 is a sequence diagram showing an example of demand response operation.

Next, an embodiment of the present invention will be described with reference to the drawings.
[Demand response system]
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 three consumers A, B, and C 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 3, 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, 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 only consumer C, and the target value is 120 kW. Group 2 consists of a combination of consumers A and B, and the target value is 180 kW. Group 3 consists of a combination of consumers B and C, and the target value is 200 kW. Group 4 consists of a combination of consumers A and C, and the target value is 220 kW. Group 5 consists of a combination of consumers A, B, and C, and the target value is 300 kW. In addition, these groups are pre-registered so that their respective target values 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, and C. 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 customer C is 120 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 in the power saving request acquired by the request acquisition unit 15A and the total reduction amount. , It has a function to search from the consumer DB 14 as a request destination group.
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 searching as a request destination group, the consumer selection unit 15B has an excess of the actual reduction amount with respect to the previous reduction amount specified in the previous reduction request from the previous request destination customer selected based on the previous power saving request. When the shortage is notified, the function to calculate the correction amount for the total reduction amount based on the previous total reduction amount and the current total reduction amount and the excess / deficiency amount, and the total reduction amount based on the obtained correction amount. It has a function to correct the amount and search the customer database for the group having the target value with the smallest difference from the corrected total reduction amount as the request destination group.

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 present 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 process.
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 determines whether or not there is a notification regarding the previous excess / deficiency indicating the excess / deficiency of the actual reduction amount with respect to the specified previous reduction amount from the previous request destination customer selected in response to the previous power saving request. After confirmation (step S101), if the previous notification regarding excess or deficiency has not arrived (step S101: NO), the process proceeds to step S104, which will be described later.

On the other hand, when the notification regarding the previous excess / deficiency has arrived (step S101: YES), the correction amount for the total reduction amount is calculated based on the previous total reduction amount, the current total reduction amount, and the previous excess / deficiency amount. (Step S102), the total reduction amount this time is corrected based on the obtained correction amount (step S103).

At this time, if the previous total reduction amount is D (t-1), the current total reduction amount is D (t), and the previous excess / deficiency amount is Q (t-1), the correction amount ΔQ is It is calculated by the following formula (1).
ΔQ = Q (t-1) × D (t) / D (t-1)… (1)
Therefore, the corrected total reduction amount D (t) this time is calculated by the following equation (2).
D (t) = D (t) + ΔQ ... (2)

After that, the consumer selection unit 15B accesses the consumer DB 14, searches for the group having the target value having the smallest difference from the total reduction amount this time as the request destination group (step S104), and obtains the result. All of the consumers belonging to the request destination group are selected as the request destination consumers (first request destination customers) (step S105).

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 S105 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 S106).

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 S107), and a series of demand response processing is completed. 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.

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 customer of the previous request destination before transmitting the new reduction request in step S107. 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.

Further, in FIG. 4, the case where the actual reduction amount is smaller than the reduction amount specified in the reduction request and the excess / deficiency indicates the reduction / deficiency 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 excess or deficiency indicates the reduction excess amount, in step S106, the reduction excess amount is subtracted from the total reduction amount to obtain the total reduction amount for re-request. You can recalculate.

[Operation example of this 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. 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.

When the computer 15 receives the power saving request from the power supplier P (step S110), the computer 15 sets the group 5 as the group having the smallest target value with the smallest difference from the total reduction amount of 300 kW specified in the power saving request, and sets the group 5 as the consumer DB 14 The customers A, B, and C belonging to the group 5 are selected as the requested customers, and the reduction request is transmitted to these customers A and B (step S111).

Here, for example, the customer B cannot reduce all the initial reductionable amount of 80 kW and the reduction is insufficient by 40 kW, and the customer C cannot reduce all the initial reduceable amount of 120 kW and the reduction is insufficient by 60 kW. In this case, the consumers B and C notify the computer 15 of these reductions and deficiencies as excesses and deficiencies (step S112). At this time, even if the consumers A, B, and C are combined, it means that only 200 kW, which is significantly smaller than the total reduction amount of 300 kW specified in the power saving request, can be saved.

Therefore, when the computer 15 receives a new power saving request from the power supplier P (step S120), the computer 15 has been notified of the insufficient reduction by the customer who requested it last time, so that the total reduction amount D (t-1) of the previous time is reached. ) = 300 kW, the total reduction amount D (t) = 120 kW this time, and the previous excess / deficiency Q (t-1) = 100 kW (= 40 kW + 60 kW), and the correction amount ΔQ = from the above equation (1). 40 kW (= 100 kW × 120 kW / 300 kW) is calculated (step S121), and based on the obtained correction amount ΔQ = 40 kW, the total reduction amount D (t) = 160 kW this time after correction from the above equation (2). (= 100 kW + 60 kW) is calculated (step S122).

After that, the computer 15 notifies the consumer DB 14 of the search request with the corrected total reduction amount of 160 kW as the target value (step S123). As a result, from the group data of FIG. 2, the group 2 having a target value of 180 kW is returned from the consumer DB 14 as a search result (step S124).

The computer 15 selects the obtained group 2 as the request destination group, selects the customers A and B belonging to the group 2 as the request destination customers, and with respect to the customer C included in the previous request destination customers. To send a request cancellation (step S125). As a result, the previous reduction request that has been made by the consumer C 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 S126). As a result, consumer A will start reducing power consumption by 100 kW, and consumer B will start reducing power consumption by 80 kW, which is almost the same as the corrected total reduction amount of 160 kW. Equal 180 kW of power saving will be implemented. Therefore, although the reduction request is canceled by the customer C, both the customers A and B continue the previous reduction request, and there is no need to change the operating status of the equipment.

Therefore, if the total reduction amount of 120 kW is requested as it is, the total reduction amount (target value) will be significantly changed from the previous 300 kW to 180 kW. However, according to the present embodiment, the corrected amount is corrected. Since the total reduction amount of 160 kW is used, the change range of the total reduction amount is reduced to 140 kW. For this reason, even if the notification interval of the power saving request from the power supplier is short and the requesting customer has an excess or deficiency of the power reduction amount, the excessive change of the total reduction amount is suppressed and the request is made. Significant changes in the reduction request to the requesting customer will be avoided, and as a result, the burden on the requesting customer will be reduced.

[Effect of this 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 customers, and the request instruction unit 15C makes a request for reduction of power consumption to each of the request destination consumers. is there.

In addition to this, if the previous request destination customer selected based on the previous power saving request has notified the excess or deficiency of the actual reduction amount with respect to the previous reduction amount specified in the previous reduction request, the customer is selected. Part 15B calculates the correction amount for the total reduction amount based on the previous total reduction amount and the current total reduction amount and the excess / deficiency amount, corrects the total reduction amount based on the obtained correction amount, and after the correction. The group having the target value with the smallest difference from the total reduction amount of is searched as the request destination group from the consumer DB 14, all the consumers belonging to the request destination group are selected as the request destination customers, and the request instruction unit The 15C makes a request for reduction of power consumption to each of the requested consumers.

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 increase in service cost can be suppressed.

In addition, if the previous request destination consumer selected based on the previous power saving request notifies the excess or deficiency of the actual reduction amount with respect to the previous reduction amount specified in the previous reduction request, the previous total reduction amount and The total reduction amount this time is corrected based on the total reduction amount this time and the excess / deficiency amount, and the group with the target value with the smallest difference from the total reduction amount after correction is selected as the requested customer and consumed. A request for power reduction will be made.
For this reason, the range of change in the total reduction amount (target value) is reduced, so that the notification interval of the power saving request from the power supplier is short, and the requesting customer has an excess or deficiency of the power reduction amount. Even if this is the case, excessive changes in the total reduction amount can be suppressed. Therefore, it is possible to avoid a drastic change in the reduction request to the requesting customer, and as a result, it is possible to reduce the burden on the requesting customer.

Further, in the present embodiment, the request instruction unit 15C refers to the non-selected customers who are not newly selected as the requested customers among the customers 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.

Further, in the present embodiment, the consumer selection unit 15B searches 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. You may try to do it. This makes it possible to appropriately select the requested customer who can satisfy the total reduction amount specified in the power saving request.

[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 ... 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 consumers belonging to the request destination group are the request destination consumers. With the consumer selection department to select as
It is equipped with a request instruction unit that requests each of the requested customers to reduce power consumption.
When the consumer selection unit is notified of the excess or deficiency of the actual reduction amount with respect to the previous reduction amount specified in the previous reduction request from the previous request destination customer selected based on the previous power saving request. Based on the previous total reduction amount specified in the previous power saving request, the current total reduction amount specified in this power saving request, and the excess / deficiency amount, the correction amount for the total reduction amount is calculated and obtained. The feature is that the total reduction amount of this time is corrected based on the correction amount, and the group having the target value with the smallest difference from the total reduction amount of this time after correction is searched as the request destination group from the consumer database. Demand response system. In the demand response system according to claim 1,
When the previous total reduction amount is D (t-1), the current total reduction amount is D (t), and the excess / deficiency amount is Q (t-1), the consumer selection unit A demand response system characterized in that the correction amount ΔQ and the corrected total reduction amount D (t) of this time are calculated by the following equations.
ΔQ = Q (t-1) × D (t) / D (t-1)
D (t) = D (t) + ΔQ In the demand response system according to claim 1 or 2.
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. In the demand response system according to any one of claims 1 to 3.
The consumer selection unit is characterized in that 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 is searched from the customer database as the request destination group. Demand response system. 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 requested customers to reduce power consumption.
In the consumer selection step, when the previous request destination customer selected based on the previous power saving request notifies the excess or deficiency of the actual reduction amount with respect to the previous reduction amount specified in the previous reduction request. The correction amount for the total reduction amount is calculated and obtained based on the previous total reduction amount specified in the previous power saving request, the current total reduction amount specified in the current power saving request, and the excess / deficiency amount. It includes a step of correcting the total reduction amount of the present time based on the correction amount and searching the group having the target value having the smallest difference from the total reduction amount of the present time after the correction as a request destination group from the consumer database. A demand response method characterized by that. In the demand response method according to claim 5,
In the consumer selection step, when the previous total reduction amount is D (t-1), the current total reduction amount is D (t), and the excess / deficiency amount is Q (t-1). A demand response method comprising a step of calculating the correction amount ΔQ and the corrected total reduction amount D (t) of the present time by the following equation.
ΔQ = Q (t-1) × D (t) / D (t-1)
D (t) = D (t) + ΔQ In the demand response method according to claim 5 or 6.
In the request instruction step, among the consumers who are requesting reduction in response to the previous power saving request, all of the non-selected consumers who were not selected as the requested customers are requested to reduce the amount previously made. A demand response method characterized by including a step of canceling. In the demand response method according to any one of claims 5 to 7.
The consumer selection step includes a step of searching the consumer database 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 as the request destination group. A demand response method characterized by that.

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