JP2020054040A - Aggregator device for controlling charge/discharge electric power amount of each storage battery, program and supply-demand adjusting method - Google Patents

Abstract

To provide an aggregator device, etc. capable of suppressing a calculation amount when selecting a storage battery and determining a charge/discharge electric power amount, even though the number of storage batteries according to a supply-demand adjusting electric power amount is increased.SOLUTION: An aggregator device comprises a storage battery database associated with electric power utilization information for each storage battery; group definition means for defining each group by repeating, in k steps, that m groups each including n members are constituted while incrementing n; group configuration means for applying storage battery-to-storage battery with the same electric power utilization information to members in each group, under restrictions of defined groups; group selection means for selecting a group combination in such a manner that a sum of a chargeable/dischargeable electric power amount of each storage battery becomes approximate to an entirely requesting charge/discharge electric power amount enabling calculation from a demand adjusting electric power amount; and storage battery control means for instructing the charge/discharge electric power amount to each storage battery in combined groups.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a technology of an aggregator device that controls charge / discharge power of each of a plurality of storage batteries in accordance with supply / demand adjustment power.

  FIG. 1 is a system configuration diagram according to the related art.

2. Description of the Related Art Conventionally, in order to balance the supply and demand of electric power, there is a technique in which not only the power generation side unilaterally adjusts the supply and demand of electric power, but also charges and discharges the storage battery on the consumer side by remote control.
According to FIG. 1, it is assumed that the aggregator device (power intermediary company) 1 has previously acquired the power usage information of each storage battery 3 of the customer.
The power company system 2 transmits a demand and supply adjustment request based on the supply and demand adjustment power to the aggregator apparatus 1. On the other hand, the aggregator device 1 calculates the charge / discharge power amount of the storage battery 3 of each consumer based on the supply / demand adjustment power amount, and transmits the charge / discharge power amount to each storage battery 3. The storage battery 3 charges and discharges power according to the received charge / discharge power amount.

  In addition, the management server (aggregator function) determines, based on the remaining amount of each storage battery of the customer equipment (energy storage device), the charge / discharge ratio to be charged / discharged by the storage battery with respect to the charge / discharge power required in a predetermined area. Is also available (for example, see Patent Document 1). According to this technology, the customer-side equipment receives the sharing ratio from the management server, and calculates the sharing power amount to be charged / discharged by the storage battery based on the sharing ratio. And a storage pond controls charging / discharging according to the allotted electric energy.

Japanese Patent No. 6183576

However, according to the related art, the amount of calculation increases as the number of storage batteries to be controlled increases in order to calculate the charge / discharge power amount and the sharing ratio for each storage battery. As a result, the calculation time becomes longer, and the latest power usage information (for example, the remaining amount) of each storage battery cannot be reflected in the calculation result.
For example, it is impossible to request a storage battery of a consumer to discharge more than the remaining amount.
Further, when it takes 2 hours to calculate the sharing ratio of all the storage batteries, the calculation is based on the power usage information of each storage battery up to 2 hours before. In this case, the remaining amount of the storage battery may already be low.
That is, when the calculation is not performed using the latest power usage information, an error occurs between the supply and demand adjustment power amount and the sum total of the charge and discharge power amounts of the respective storage batteries.

  In view of this, the present invention provides a method of determining the charge / discharge power amount for each storage battery according to the supply / demand adjustment power amount, even if the number of storage batteries to be controlled increases, the amount of calculation in selecting the storage battery and determining the charge / discharge power amount It is an object of the present invention to provide an aggregator device, a program, and a supply and demand adjustment method capable of suppressing the occurrence of a problem.

According to the present invention, in the aggregator device for controlling the charge and discharge power amount of each of the plurality of storage batteries according to the supply and demand adjustment power amount,
A storage battery database in which power usage information is associated with each storage battery,
group defining means for defining each group by repeating k stages of forming m groups including n members while incrementing n,
A group forming means for applying storage batteries having similar power usage information to each other as members of each group under the defined group constraint;
Group selection means for selecting a combination of groups so that the total sum of chargeable / dischargeable power amounts of the respective storage batteries can be calculated from the demand adjustment power amount, and is close to the charge / discharge power amount of the entire request.
A storage battery control unit for instructing the charge / discharge power amount for each storage battery of the combined group is provided.

According to another embodiment of the aggregator device of the present invention,
Group definition means
Number of group members: n, nmin ≦ n ≦ nmax
nmin ≧ 1, nmax> 1
Number of groups with the same number of members n: m
Stage of group with the same number of members n: k (ascending order from the group with the smaller number of members)
Member increment ratio between groups: U (1 <U ≦ 2)
Number of members of group with k = 1: scale (1) = nmin
Number of members in k-th group: scale (k) = floor {B × scale (k-1)}
floor ｛｝: Round-up integer Number of members in the K-th group: scale (K) ≦ nmax
It is also preferable to repeat K steps while incrementing n until the total number of members of all groups becomes equal to or greater than the total number of storage batteries.

According to another embodiment of the aggregator device of the present invention,
It is also preferable that the group forming unit forms a group in which storage batteries having similar power usage information are clustered so as to satisfy the defined restriction on the number of members of each group.

According to another embodiment of the aggregator device of the present invention,
It is also preferable that the group forming means forms the group by a dendrogram.

According to another embodiment of the aggregator device of the present invention,
It is also preferable that the group forming unit reconfigures the group at a predetermined time interval or when a predetermined condition is satisfied.

According to another embodiment of the aggregator device of the present invention,
Group selection means
Select multiple combinations of groups for the same demand adjusted energy,
It is also preferable to change the combination of groups each time the same demand adjustment power amount request is received.

According to another embodiment of the aggregator device of the present invention,
Group selection means
Priorities are defined for each item of power usage information,
Based on each power usage information of all storage batteries included in the group, a priority is given to each group,
It is also preferable to select a combination of groups such that the total of the charge / discharge power of each storage battery approaches the demand adjustment power in order from the group having the highest priority.

According to another embodiment of the aggregator device of the present invention,
It is also preferable that the power usage information includes, in addition to the chargeable / dischargeable electric energy, a rated capacity as facility data and / or a remaining amount as performance data.

According to another embodiment of the aggregator device of the present invention,
It is also preferable that the storage battery control means equally divides the charge / discharge power of the group into each storage battery for each group.

According to the present invention, in a program for causing a computer mounted on a device that controls the charge / discharge power amount of each of a plurality of storage batteries according to a supply / demand adjustment power amount,
A storage battery database in which power usage information is associated with each storage battery,
group defining means for defining each group by repeating k stages of forming m groups including n members while incrementing n,
A group forming means for applying storage batteries having similar power usage information to each other as members of each group under the defined group constraint;
Group selection means for selecting a combination of groups such that the sum of the charge / discharge power of each storage battery is close to the charge / discharge power of the entire request, which can be calculated from the demand adjustment power,
A computer is caused to function as storage battery control means for instructing each storage battery of the combined group to charge / discharge power.

According to the present invention, in a supply and demand adjustment control method for a device that controls the charge and discharge power of each of a plurality of storage batteries in accordance with the supply and demand adjustment power,
The equipment is
Each storage battery has a storage battery database in which power usage information is associated,
a first step of defining each group by repeating k steps in increments of n to form m groups including n members, defining each group;
A second step of applying storage batteries having similar power usage information as members of each group under the defined group constraints;
A third step of selecting a group combination such that the sum of the charge / discharge power of each storage battery is close to the charge / discharge power of the entire request, which can be calculated from the demand adjustment power;
And a fourth step of instructing each storage battery in the combined group of the amount of charge / discharge power.

According to the aggregator apparatus, the program, and the supply and demand adjustment method of the present invention, the determination of the charge and discharge power amount for each storage battery according to the supply and demand adjustment power amount, even if the number of storage batteries to be controlled increases, the selection of storage batteries and The amount of calculation in determining the charge / discharge power amount can be suppressed.
In particular, even if the number of storage batteries increases, the amount of calculation is suppressed, and the calculation time does not increase. Therefore, the calculation can be performed using the new power usage information in each storage battery, and the error between the supply and demand adjustment power amount and the sum of the charge and discharge power amounts of each storage battery can be reduced.

FIG. 2 is a system configuration diagram according to the related art. It is a system configuration diagram in the present invention. It is a functional block diagram of the aggregator apparatus in this invention. It is a storage battery database showing power usage information for each storage battery. It is an explanatory view showing processing of a group definition part in the present invention. It is an explanatory view showing processing of a group composition part in the present invention. FIG. 4 is an explanatory diagram showing chargeable / dischargeable electric energy for each group. It is an explanatory view showing processing of a group selection part in the present invention. It is a graph showing the processing time with respect to the number of storage batteries.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  FIG. 2 is a system configuration diagram according to the present invention.

<Power company system 2>
The power company system 2 transmits a “supply / demand adjustment request” to the aggregator device 1.
The demand-supply adjustment request includes “supply-demand adjustment power amount” and “time”. For example, it is as follows.
Time 2018/4/1 12:00 Supply and demand adjustment request `` 2018/4/1 13: 00-13: 30, 140kWh, discharge ''
The time interval for updating the charge / discharge power amount is in units of 30 minutes, but may be any time interval (for example, 5 minutes, 10 minutes, 15 minutes, etc.). Further, the supply and demand adjustment power amount may be kW, which is power, instead of kWh, which is power amount.
Note that, for the time zone of supply and demand adjustment, a schedule may be set in advance, such as charging from 23:00 to 06:59 next day and discharging from 07:00 to 22:59. .

The supply and demand adjustment power amount means how much the power company needs to prepare the supply amount (= power generation amount). In other words, it means how much adjustment can be made as compared with the supply amount at the normal time.
The “supply / demand adjustment power amount” specifically refers to a difference (adjustment amount) based on a normal time when there is no demand / supply adjustment request.
The following description is based on the assumption that the storage battery is not charging or discharging during normal times when there is no demand-supply adjustment request. Therefore, in normal times when there is no demand / supply adjustment request, the charge / discharge power from the storage battery is zero, so that the supply / demand adjustment amount matches the charge / discharge power amount from the storage battery.
However, when the storage battery performs charging and discharging from a normal time, it is necessary to estimate the extent to which the adjustment can be made in consideration of the charging and discharging power, and to perform the charging and discharging control of the storage battery.

  According to the embodiment of the present invention, the aggregator apparatus 1 and the power company system 2 are described as separate systems. However, of course, the power company system 2 having the function of determining the supply and demand adjustment amount includes the aggregator apparatus 1. It may be configured integrally as described above.

<Aggregator device 1>
The aggregator device 1 receives the demand-supply adjustment request from the power company system 2 and knows the demand-supply adjustment power amount.
The aggregator device 1 groups a plurality of storage batteries, and determines a charge / discharge power amount equally divided among the storage batteries according to the supply / demand adjustment power amount. Then, the charge / discharge power amount is notified to each storage battery 3.
Thereby, even if the number of storage batteries increases, it is possible to suppress an increase in the amount of calculation and calculate the charge / discharge power of each storage battery according to the supply / demand adjustment power.

  FIG. 3 is a functional configuration diagram of the aggregator device according to the present invention.

  According to FIG. 3, the aggregator device 1 includes a storage battery database 10, a group definition unit 11, a group configuration unit 12, a group selection unit 13, and a storage battery control unit 14. These functional components are realized by executing a program that causes a computer mounted on the aggregator device to function. Further, the flow of processing of these functional components can be understood as a method of adjusting supply and demand of the aggregator device.

[Storage battery database 10]
The storage battery database 10 associates power usage information with each storage battery. The power usage information is periodically received from each storage battery 3 and collected.

  FIG. 4 is a storage battery database representing power usage information for each storage battery.

The storage battery database 10 stores power usage information in association with each storage battery. The power usage information may include the following information in addition to the “chargeable / dischargeable power amount” as the facility data.
The facility data may further include a rated capacity, a PV power generation rating, a customer power plan, and the like.
The actual data may further include the remaining amount, the occurrence rate of abnormality, the number of charge / discharge requests, the number of times of power purchase and sale per hour, the dischargeable amount, the chargeable amount, and the PV power generation amount.
The chargeable / dischargeable power amount is the upper limit of the amount that can be charged / discharged from the storage battery.

[Group definition part 11]
The group definition unit 11 sets a group size, and repeats k steps of forming m groups including n members while incrementing n, thereby defining each group.

  FIG. 5 is an explanatory diagram illustrating the processing of the group definition unit according to the present invention.

The group definition unit 11 defines parameters as follows.
Number of group members: n, nmin ≦ n ≦ nmax
nmin ≧ 1, nmax> 1
Number of groups with the same number of members n: m
Stage of group with the same number of members n: k (ascending order from the group with the smaller number of members)
Member increment ratio between groups: U (1 <U ≦ 2)
Number of members of group with k = 1: scale (1) = nmin
Number of members in k-th group: scale (k) = floor {B × scale (k-1)}
floor ｛｝: Round-up integer Number of members in the K-th group: scale (K) ≦ nmax

Then, the group definition unit 11 repeats k steps while incrementing n until the total number of members of all groups becomes equal to or greater than the total number of storage batteries. Specifically, it is configured stepwise as follows.
scale (k) Group ID (number of members)
k = 1 A1 (1), A2 (1), A3 (1)
Up to three groups consisting of one storage battery k = 2 B1 (2), B2 (2), B3 (2)
Up to three groups consisting of two storage batteries k = 3 C1 (4), C2 (4), C3 (4)
Up to three groups consisting of four storage batteries K = k = 4 D1 (8), D2 (8), D3 (8)
Up to three groups each including eight storage batteries By setting the upper limit number k of storage batteries in each group stepwise, even if the number of storage batteries to be controlled increases, the number of groups can be suppressed. be able to.

According to the present invention, the calculation amount is suppressed by calculating the charge / discharge power amount only for each group. In addition, a plurality of m groups each having a different number n of members are configured.
For example, when only a group having a large number of members is created, it is difficult to adjust the value to a value close to the supply and demand adjustment power amount by combining the groups. For example, in the case of the supply / demand adjustment power amount of 140 kWh, it is difficult to make fine adjustments such as 1 kWh and 2 kWh depending on the combination of groups. For this purpose, groups of various sizes are created from a group having a small number of members to a group having a large number of members.

If there is only one group having a certain number of members, the group may be selected many times. For this purpose, a plurality m of groups having the same number of members are created. This prevents the same group from being selected more than once.
For example, in a case where the amount of supply and demand adjustment is less than half of the total storage batteries, the group having the largest number of members is always selected. For this reason, by preparing a plurality of groups having the maximum number of members, it is not necessary to concentrate on one group.

[Group Configuration Unit 12]
The group forming unit 12 applies storage batteries having similar power usage information as members of each group under the defined group restrictions.
Specifically, the group forming unit 12 forms a group in which storage batteries having similar power usage information are clustered so as to satisfy the defined restriction on the number of members of each group.
Since a plurality of storage batteries belonging to the same group have similar power usage information, they can request the same amount of charge / discharge power. That is, the aggregator apparatus 1 only needs to calculate the group selection and the charge / discharge power amount, and can suppress the calculation amount.

  FIG. 6 is an explanatory diagram illustrating the processing of the group forming unit according to the present invention.

  According to FIG. 6, a group is composed of dendrograms. First, storage batteries are sorted in order of similar power usage information. Specifically, by expressing the power usage information by a vector for each item, it is possible to calculate the similarity between the storage batteries based on the Euclidean distance.

According to FIG. 6, the groups are specifically configured as follows.
(1) A group B1 with two members is configured including a storage battery a and a storage battery b with the most similar power usage information.
Group B1 (batteries a and b)
(2) Next, a group B2 of two members including the storage battery d and the storage battery e with the most similar power usage information is configured.
Group B1 (batteries a and b)
Group B2 (batteries d and e)
(3) Next, a group B3 having two members including the storage battery f and the storage battery g with the most similar power usage information is configured.
Group B1 (batteries a and b)
Group B2 (batteries d and e)
Group B3 (batteries f, g)
(4) Next, a group C1 having three members is configured by merging the storage battery c and the group B1 including the storage batteries a and b having the most similar power usage information.
Cancel Group B1 Group B2 (Batteries d and e)
Group B3 (batteries f, g)
Group C1 (storage batteries a, b, c)
(5) Next, an attempt is made to merge the group C1 including the storage batteries a, b, and c with the group B2 including the storage batteries d and e having the most similar power usage information. However, when these are merged, the number of members becomes 5, so this merge is not executed. The groups here are the following three.
Group B2 (batteries d and e)
Group B3 (batteries f, g)
Group C1 (storage batteries a, b, c)
(6) Since the group including the storage batteries a, b, c, d, and e is not configured, no processing is performed.
(7) A group B1 of two members including the storage battery h and the storage battery i with the most similar power usage information is configured.
Group B1 (storage batteries h, i)
Group B2 (batteries d and e)
Group B3 (batteries f, g)
Group C1 (storage batteries a, b, c)
(8) Next, a group C2 having three members is configured by merging the storage battery j and the group B1 including the storage batteries h and i with the most similar power usage information.
Cancel Group B1 Group B2 (Batteries d and e)
Group B3 (batteries f, g)
Group C1 (storage batteries a, b, c)
Group C2 (storage batteries h, i, j)
(9) Next, the storage battery k and the group C2 including the storage batteries h, i, and j having the most similar power usage information are combined to form a group C2 having four members.
Group B2 (batteries d and e)
Group B3 (batteries f, g)
Group C1 (storage batteries a, b, c)
Group C2 (storage batteries h, i, j, k)
(10) Next, an attempt is made to merge the storage battery 1 with the group C2 including the storage batteries h, i, j, and k having the most similar power usage information. However, when these are merged, the number of members becomes 5, so this merge is not executed. A group A1 having the number of members of 1 including the storage battery 1 is configured.
Group A1 (battery l)
Group B2 (batteries d and e)
Group B3 (batteries f, g)
Group C1 (storage batteries a, b, c)
Group C2 (storage batteries h, i, j, k)
(11) Since no group including the storage batteries a, b, c, d, e, f, and g is formed, no processing is performed. Further, the storage batteries m are configured as one group.
Group A1 (battery l)
Group B2 (batteries d and e)
Group B3 (batteries f, g)
Group C1 (storage batteries a, b, c)
Group C2 (storage batteries h, i, j, k)
Group A2 (battery m)

  Further, the group forming unit 12 reconfigures the group at a predetermined time interval or when a predetermined condition is satisfied. For example, it is preferable that the group be reconfigured for a certain period of time, such as one week or one month, or at a timing when a storage battery to be controlled is added.

  FIG. 7 is an explanatory diagram showing chargeable / dischargeable electric energy for each group.

FIG. 7A shows a group defined by the group definition unit 11. The size of the rectangle representing the group and the number in parentheses indicate the maximum number of members in each group.
According to FIG. 7 (b), only the groups {a, b, c {d, e {f, g} h, i, j, k {l} m} assigned by FIG. It is extracted.
According to FIG. 7 (c), the chargeable / dischargeable electric energy in all the storage batteries is represented for each group. The size of the rectangle representing the group indicates the magnitude of the chargeable / dischargeable electric energy of each group.
According to FIG. 7D, the groups are sorted according to the chargeable / dischargeable electric energy.

[Group Selector 13]
When the charge / discharge power from the storage batteries in the normal state is not zero, the group selection unit 13 combines the groups so that the total chargeable / dischargeable power of each storage battery is close to the charge / discharge power of the entire request. Select The charge / discharge power amount of the entire request is calculated by the following formula.
Charge / discharge power of the entire request =
Electricity supply and demand adjustment from power company system + total charge / discharge forecast at normal time
Charge / discharge electric energy (positive is discharge, negative is charge)
Power supply and demand adjustment (positive request for reduction, negative request for increase)
Estimated total charge / discharge amount during normal operation (positive is discharge, negative is charge)
The total predicted charge / discharge amount during normal operation is the amount of power predicted to be charged / discharged when there is no supply / demand adjustment.
Then, for example, a plurality of storage batteries are sorted as shown in FIG. Note that the priority of the sorting in the plurality of storage batteries may be a weighted average of the remaining amounts.

  FIG. 8 is an explanatory diagram illustrating the processing of the group selection unit according to the present invention.

According to FIG. 8, it is going to respond to the following demand-supply adjustment request.
Time 2018/4/1 12:00 Supply and demand adjustment request `` 2018/4/1 13: 00-13: 30, 140kWh, discharge ''
(S1) First, the group C2 is selected. At this time, since the chargeable / dischargeable electric energy of the group C2 is lower than the demand adjustment electric energy, the charge / discharge electric power continues.
(S2) Next, the group C2 + C1 is selected. At this time, since the chargeable / dischargeable electric energy of the group C2 + C1 is equal to or more than the demand adjustment electric energy, the group C2 selected before exceeding it is determined. Also, the group C2 + C1 is stored as a combination candidate.
Combination candidate: C2 + C1
(S3) Next, the group C2 + A1 is selected. At this time, since the chargeable / dischargeable power amount of the group C2 + A1 matches the demand adjustment power amount, the group C2 + A1 is stored as a combination candidate.
Combination candidate: C2 + C1
C2 + A1
(S4) Next, the group C2 + B2 is selected. At this time, since the chargeable / dischargeable electric energy of the group C2 + B2 is lower than the demand adjustment electric energy, the electric power is continued as it is.
(S5) Next, the group C2 + B2 + B3 is selected. At this time, since the chargeable / dischargeable electric energy of the group C2 + B2 + B3 is equal to or more than the demand adjustment electric energy, the group C2 + B2 selected before exceeding it. Also, the group C2 + B2 + B3 is stored as a combination candidate.
Combination candidate: C2 + C1
C2 + A1
C2 + B2 + B3
(S6) Next, the group C2 + B2 + A2 is selected. At this time, since the chargeable / dischargeable electric energy of the group C2 + B2 + A2 matches the demand adjustment electric energy, the group C2 + B2 + A2 is stored as a combination candidate.
Combination candidate: C2 + C1
C2 + A1
C2 + B2 + B3
C2 + B2 + A2
Finally, a combination of groups having the lowest chargeable / dischargeable electric energy (closest to the supply / demand adjusted electric energy) is selected from all the combination candidates. According to FIG. 8, the following two combinations are selected.
Finally selected combination: C2 + A1
C2 + B2 + A2
As described above, the group selection unit 13 can select a plurality of combinations of groups for the same demand adjustment power amount.

  Further, even if the chargeable / dischargeable electric energy is the same, a combination of different groups can be selected. Therefore, each time a request for the same demand adjustment electric energy is generated, the combination of groups is changed. Is also good. It is possible to avoid a situation where requests are concentrated on a specific group.

[Storage battery control unit 14]
The storage battery control unit 14 instructs each storage battery of the combined group on the amount of charge / discharge power. At this time, the storage battery control unit 14 equally divides the charge / discharge power of the group into each storage battery for each group. Since the storage batteries having a high degree of similarity in the power usage information are grouped, the charge / discharge power amount can be equally divided.

<Storage battery 3>
The storage batteries 3 are configured for each group, and charge and discharge according to the received charge and discharge power. In addition, the power usage information of the storage battery is transmitted to the aggregator device 1 as appropriate.
The storage battery 3 communicates with a HEMS-GW (Home Energy Management System-GateWay), a HOME-GW (HOME GateWay), a smart meter (a power meter equipped with a communication function, or a HEMS-GW installed on a distribution board). (A possible power meter). The aggregator device 1 transmits the charge / discharge power of each storage battery to the HEMS-GW or the like. The HEMS-GW and the like control charging and discharging of each storage battery.
The HEMS-GW or HOME-GW may receive the data in the OpenADR data format from the aggregator device 1 and transmit the data to the storage battery in the ECHONet-Lite data format.

  FIG. 9 is a graph showing the processing time with respect to the number of storage batteries.

According to FIG. 9, it is assumed that the following parameters are set for the present invention.
Number of group members: nmin = 1
nmax = 32,768
Number of groups with the same number of members n: m = 1
Member increment rate between group stages: U = 2
Here, according to FIG. 9, when trying to control the number of storage batteries 65,535, the calculation time of the charge / discharge power amount for each storage battery requires 6,553.5 seconds (about 109 minutes), whereas the charge / discharge The calculation time of the electric energy is 1.6 seconds. For example, when the power usage information of the storage battery can be acquired every 30 minutes, it is preferable that the calculation time of the charge / discharge power amount is also within 30 minutes. According to the above-described example, it takes 109 minutes to calculate for each storage battery, cannot be calculated within 30 minutes, and the error between the supply and demand adjustment power amount and the sum of the charge and discharge power amounts of each storage battery is large. Become.

As described in detail above, according to the aggregator apparatus, the program, and the supply and demand adjustment method of the present invention, the number of storage batteries to be controlled is determined for the determination of the charge and discharge power amount for each storage battery according to the supply and demand adjustment power amount. Even if it increases, it is possible to suppress the amount of calculation in selecting the storage battery and determining the charge / discharge power amount.
In particular, even if the number of storage batteries increases, the amount of calculation is suppressed, and the calculation time does not increase. Therefore, the calculation can be performed using the new power usage information in each storage battery, and the error between the supply and demand adjustment power amount and the sum of the charge and discharge power amounts of each storage battery can be reduced.

  For the above-described various embodiments of the present invention, various changes, modifications, and omissions in the scope of the technical idea and viewpoint of the present invention can be easily performed by those skilled in the art. The foregoing description is merely an example, and is not intended to be limiting. The invention is limited only as defined by the following claims and equivalents thereof.

DESCRIPTION OF SYMBOLS 1 Aggregator apparatus 10 Storage battery database 11 Group definition part 12 Group construction part 13 Group selection part 14 Storage battery control part 2 Electric power company system 3 Storage battery

According to another embodiment of the aggregator device of the present invention,
Group definition means
Number of group members: n, nmin ≦ n ≦ nmax
nmin ≧ 1, nmax> 1
Number of groups with the same number of members n: m
Stage of group with the same number of members n: k (ascending order from the group with the smaller number of members)
Member increment ratio between groups: U (1 <U ≦ 2)
Number of members of group with k = 1: scale (1) = nmin
Number of members in the k-th group: scale (k) = floor { U x scale (k-1)}
floor ｛｝: Round-up integer Number of members in the K-th group: scale (K) ≦ nmax
It is also preferable to repeat K steps while incrementing n until the total number of members of all groups becomes equal to or greater than the total number of storage batteries.

The group definition unit 11 defines parameters as follows.
Number of group members: n, nmin ≦ n ≦ nmax
nmin ≧ 1, nmax> 1
Number of groups with the same number of members n: m
Stage of group with the same number of members n: k (ascending order from the group with the smaller number of members)
Member increment ratio between groups: U (1 <U ≦ 2)
Number of members of group with k = 1: scale (1) = nmin
Number of members in the k-th group: scale (k) = floor { U x scale (k-1)}
floor ｛｝: Round-up integer Number of members in the K-th group: scale (K) ≦ nmax

Claims (11)

In the aggregator device that controls the charge and discharge power of each of the plurality of storage batteries according to the supply and demand adjustment power,
A storage battery database in which power usage information is associated with each storage battery,
group defining means for defining each group by repeating k stages of forming m groups including n members while incrementing n,
A group forming means for applying storage batteries having similar power usage information to each other as members of each group under the defined group constraint;
Group selection means for selecting a combination of groups so that the total sum of chargeable / dischargeable power amounts of the respective storage batteries can be calculated from the demand adjustment power amount, and is close to the charge / discharge power amount of the entire request.
An aggregator device comprising: a storage battery control unit that instructs each storage battery of the combined group with a charge / discharge power amount. The group definition means,
Number of group members: n, nmin ≦ n ≦ nmax
nmin ≧ 1, nmax> 1
Number of groups with the same number of members n: m
Stage of group with the same number of members n: k (ascending order from the group with the smaller number of members)
Member increment ratio between groups: U (1 <U ≦ 2)
Number of members of group with k = 1: scale (1) = nmin
Number of members in k-th group: scale (k) = floor {B × scale (k-1)}
floor ｛｝: Round-up integer Number of members in the K-th group: scale (K) ≦ nmax
The aggregator apparatus according to claim 1, wherein K steps are repeated while incrementing n until the total number of members of all groups becomes equal to or greater than the total number of storage batteries. 3. The group according to claim 1, wherein the group forming unit forms a group in which storage batteries having similar power usage information are clustered so as to satisfy a defined restriction on the number of members of each group. 4. Aggregator device. The aggregator apparatus according to claim 3, wherein the group forming unit forms a group by a dendrogram. The aggregator apparatus according to claim 3, wherein the group configuration unit reconfigures the group at predetermined time intervals or when a predetermined condition is satisfied. The group selecting means,
Select multiple combinations of groups for the same demand adjusted energy,
The aggregator apparatus according to any one of claims 1 to 5, wherein a combination of groups is changed each time a request for the same demand adjustment power amount is received. The group selecting means,
Priorities are defined for each item of power usage information,
Based on each power usage information of all storage batteries included in the group, a priority is given to each group,
The combination of groups is selected in order from the group with the highest priority so that the sum of the charge / discharge power of each storage battery is close to the charge / discharge power of the entire request, which can be calculated from the demand adjustment power. The aggregator device according to any one of claims 1 to 6. The power use information according to any one of claims 1 to 7, wherein, in addition to the chargeable / dischargeable electric energy, a rated capacity as facility data and / or a remaining amount as performance data. An aggregator device as described. The aggregator apparatus according to any one of claims 1 to 8, wherein the storage battery control unit equally divides the charge / discharge power of the group into each storage battery for each group. In a program that causes a computer mounted on a device that controls the charge / discharge power amount of each of the plurality of storage batteries according to the supply / demand adjustment power amount,
A storage battery database in which power usage information is associated with each storage battery,
group defining means for defining each group by repeating k stages of forming m groups including n members while incrementing n,
A group forming means for applying storage batteries having similar power usage information to each other as members of each group under the defined group constraint;
Group selection means for selecting a combination of groups such that the sum of the charge / discharge power of each storage battery is close to the charge / discharge power of the entire request, which can be calculated from the demand adjustment power,
A program for causing a computer to function as storage battery control means for instructing each storage battery of a combined group on charge / discharge power. In the supply and demand adjustment control method of the device for controlling the charge and discharge power of each of the plurality of storage batteries according to the supply and demand adjustment power,
The device comprises:
Each storage battery has a storage battery database in which power usage information is associated,
a first step of defining each group by repeating k steps in increments of n to form m groups including n members, defining each group;
A second step of applying storage batteries having similar power usage information as members of each group under the defined group constraints;
A third step of selecting a group combination such that the sum of the charge / discharge power of each storage battery is close to the charge / discharge power of the entire request, which can be calculated from the demand adjustment power;
And a fourth step of instructing each storage battery of the combined group to charge / discharge electric energy.

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