Electric power creation control system and method

• US 10,447,035 B2
• Filed: 02/27/2013
• Issued: 10/15/2019
• Est. Priority Date: 02/27/2013
• Status: Active Grant

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Matsuda, Akiko, Inagaki, Seiji, Watanabe, Tohru, Tsuyuzaki, Masao, Utsumi, Masato
• Primary Examiner(s): Lo, Kenneth M
• Assistant Examiner(s): Rahman, Mohammad A
• Application Number:
  US14/770,963
• Publication Number:
  US 20160013645A1
• Time in Patent Office: 2,421 Days
• CPC Class Codes: G05B 15/02 electric
• CPC Class Codes: G06Q 10/06 Resources, workflows, human or project management; Enterprise or organisation planning; Enterprise or organisation modelling
• CPC Class Codes: G06Q 50/06 Energy or water supply
• CPC Class Codes: H02J 3/00 Circuit arrangements for ac mains or ac distribution networks

Abstract

A first profile of each of resources in which information about characteristics of the resources when creating negawatts by controlling operation of the resources and decreasing electric power consumption of the resources or creating posiwatts by increasing the electric power consumption of the resources, and information about contract content between an aggregator and a relevant consumer are described, and a first control scenario for each electric power trading form in which control content of the resources to decrease the electric power consumption is described are stored; a resource group composed of a plurality of resources is generated by combining the resources so that the negawatts or posiwatts which satisfy conditions of a trading target electric power product can be created, on the basis of the first profile of each resource; a control scenario is selected; and each of the resources constituting the generated resource group is controlled accordingly.

Claims

1. An electric power creation control system for creating electric power by controlling operation of resources of each consumer who has made a contract with an aggregator, the electric power creation control system comprising:

a storage device that stores a profile of each of the resources, in which information about characteristics of the resources when creating negawatts by decreasing electric power consumption of the resources or creating posiwatts by increasing the electric power consumption of the resources, and information about contract content between the aggregator and the relevant consumer are described, and a plurality of control scenarios created in advance, each control scenario for a corresponding electric power trading form in which control content of the resources to decrease or increase the electric power consumption is described;

a resource group generation unit that generates a resource group composed of the plurality of resources by combining the resources so that the negawatts or posiwatts which satisfy conditions of a trading target electric power product can be created, on the basis of the profile of each resource;

a control scenario selection unit that selects, from the plurality of control scenarios stored in the storage device, a control scenario corresponding to the trading form of the electric power product for the resource group generated by the resource group generation unit; and

a control unit that controls each of the resources constituting the resource group generated by the resource group generation unit in accordance with the selected control scenario selected by the control scenario selection unit;

wherein the conditions of the electric power product include at least;

a quantity that is electric energy of the electric power product;

start time of a time slot to sell the electric power product; and

a ramp period that is a period of time from the start time until the electric energy reaches the quantity;

wherein the profile describes the ramp period which is a period of time from the electric power consumption actually starts to decrease or increase until a decreased amount or an increased amount of the electric power consumption reaches a target value;

wherein the resource group generation unit generates the resource group based on the profile of each of the resources; and

wherein the conditions of the electric power product include (i) an advance notice time which is a period of time from a time at which advance notice is made by a buyer of the electric power product before the start time until the start time, and (ii) a duration of the electric power product during which the electric power product is provided, and

wherein the electric power creation control system, further comprising;

dividing the electric power product into a plurality of electric power products based on at least one of time slots or electric energy;

judging whether or not the advance notice time of the negawatts or posiwatts created by the resource group matches the advance notice time of the divided electric power product; and

if there is no match, replacing a resource in the resource group with another resource selected to bring the advance notice time of the negawatts or posiwatts created by the resource group closer to the advance notice time of the divided electric power product.

2. The electric power creation control system according to claim 1,

wherein the profile describes, as further information about the characteristics of the relevant resource, at least lead time which is a period of time from control of operation of the resource is started until the electric power consumption actually starts to decrease or increase, and an assumed controlled variable which is the electric power consumption decreased or increased by operation control of the resource;

and

wherein the resource group generation unit generates the resource group based on the profile of each of the resources.

3. The electric power creation control system according to claim 1, wherein the profile describes, as information about contract content between the aggregator and the relevant consumer, at least a controllable time slot that is a time slot during which the operation of the relevant resource predetermined by the aggregator with the consumer can be controlled, and possible control duration that is a period of time during which the operation of the resource can be continuously controlled;

and

wherein the resource group generation unit generates the resource group by combining a plurality of the resources from among the resources, whose operation can be controlled during the time slot of the electric power product, on the basis of the profile of each resource.

4. The electric power creation control system according to claim 3, wherein the profile describes, as information about the contract content between the aggregator and the relevant consumer, a price per unit electric energy to be paid to the consumer for the negawatts or the posiwatts created by the operation control of the relevant resource;

and

wherein the resource group generation unit generates the resource group by preferentially combining the resources, regarding which a licensing fee to be paid to the consumer is low, on the basis of the profile of each resource whose operation can be controlled during the time slot of the electric power product.

5. The electric power creation control system according to claim 4,

wherein the control unit:

calculates total quantity of the negawatts then created on the basis of the electric energy of the negawatts created by the operation control which is transmitted respectively from each resource whose operation is controlled in accordance with the selected control scenario;

compares the calculated total quantity of the negawatts with the electric energy of the electric power product;

calculates an excessive amount or insufficient amount of the electric energy when it is determined that the total quantity of the then created negawatts does not match the electric energy of the electric power product; and

controls the operation of some or all the resources constituting the relevant resource group so that the total quantity of the then created negawatts will be decreased or increased by the calculated excessive amount or insufficient amount of the electric energy.

11. The electric power creation control system according to claim 1,

wherein the selected control scenario defines control to create the negawatts or posiwatts that meet a definition of the electric power product in response to information of the resource group generated by the resource group generation unit and designation of an electric power product profile, by using the resources designated by the resource group generated by the resource group generation unit;

and

wherein the electric power product profile is metadata in which content of the electric power product that the aggregator tenders a bid for sale is described.

12. The electric power creation control system according to claim 11,

wherein when the negawatts created by the resource group are inconsistent with the definition in the electric power product profile with respect to any specific resource of the resources, the control unit makes a definition to issue a command to perform control driving to correct the inconsistency.

13. The electric power creation control system according to claim 12,

wherein the control unit determines PID control parameters to correct the inconsistency with reference to the resource group and the characteristics of the specific resource and by a gain control method by means of Nyquist diagram analysis.

14. The electric power creation control system according to claim 11,

wherein the selected control scenario defines control to create the negawatts or posiwatts that meet the definition of the electric power product by satisfying the conditions of the electric power product on the basis of the profile of each resource in the resource group generated by the resource group generation unit.

6. An electric power creation control method executed at an electric power creation control system for creating electric power by controlling operation of resources of each consumer who has made a contract with an aggregator,

wherein the electric power creation control system includes a storage device that stores a profile of each of the resources, in which information about characteristics of the resources when creating negawatts by decreasing electric power consumption of the resources or creating posiwatts by increasing the electric power consumption of the resources, and information about contract content between the aggregator and the relevant consumer are described, and a plurality of control scenarios created in advance, each control scenario for a corresponding electric power trading form in which control content of the resources to decrease or increase the electric power consumption is described,

the electric power creation control method comprising:

a first step executed by the electric power creation control system generating a resource group composed of the plurality of resources by combining the resources so that the negawatts or posiwatts which satisfy conditions of a trading target electric power product can be created, on the basis of the profile of each resource, and selecting, from the plurality of control scenarios stored in the storage device, a control scenario corresponding to the trading form of the electric power product for the resource group; and

a second step executed by electric power creation control system controlling each of the resources constituting the generated resource group in accordance with the selected control scenario;

wherein the conditions of the electric power product include at least;

a quantity that is electric energy of the electric power product;

start time of a time slot to sell the electric power product; and

a ramp period that is a period of time from the start time until the electric energy reaches the quantity;

wherein the profile of at least one of the resources describes the ramp period which is a period of time from the electric power consumption actually starts to decrease until a decreased amount of the electric power consumption reaches a target value; and

wherein the profile of at least one of the resources describes the ramp period which is a period of time from the electric power consumption actually starts to increase until an increased amount of the electric power consumption reaches another target value;

wherein in the first step, the electric power creation control system generates the resource group based on the profile of each of the resources; and

wherein the conditions of the electric power product include (i) an advance notice time which is a period of time from a time at which advance notice is made by a buyer of the electric power product before the start time until the start time, and (ii) a duration of the electric power product during which the electric power product is provided, and

wherein the resource group generation unit divides the electric power product into a plurality of electric power products based on at least one of time slots or electric energy, judges whether or not the advance notice time of the negawatts or posiwatts created by the resource group matches the advance notice time of the divided electric power product, and, if there is no match, replaces a resource in the resource group with another resource selected to bring the advance notice time of the negawatts or posiwatts created by the resource group closer to the advance notice time of the divided electric power product.

7. The electric power creation control method according to claim 6,

wherein the profile describes, as further information about the characteristics of the relevant resource, at least lead time which is a period of time from control of operation of the resource is started until the electric power consumption actually starts to decrease or increase, and an assumed controlled variable which is the electric power consumption decreased or increased by operation control of the resource;

and

wherein in the first step, the electric power creation control system generates the resource group based on the profile of each of the resources.

8. The electric power creation control method according to claim 6,

wherein the profile describes, as information about contract content between the aggregator and the relevant consumer, at least a controllable time slot that is a time slot during which the operation of the relevant resource predetermined by the aggregator with the consumer can be controlled, and possible control duration that is a period of time during which the operation of the resource can be continuously controlled;

and

wherein in the first step, the electric power creation control system generates the resource group by combining a plurality of the resources from among the resources, whose operation can be controlled during the time slot of the electric power product, on the basis of the profile of each resource.

9. The electric power creation control method according to claim 8,

wherein the profile describes, as information about the contract content between the aggregator and the relevant consumer, a price per unit electric energy to be paid to the consumer for the negawatts or the posiwatts created by the operation control of the relevant resource;

and

wherein in the first step, the electric power creation control system generates the resource group by preferentially combining the resources, regarding which a licensing fee to be paid to the consumer is low, on the basis of the profile of each resource whose operation can be controlled during the time slot of the electric power product.

10. The electric power creation control method according to claim 9,

wherein in the second step, the electric power creation control system:

calculates total quantity of the negawatts then created on the basis of the electric energy of the negawatts created by the operation control which is transmitted respectively from each resource whose operation is controlled in accordance with the selected control scenario;

compares the calculated total quantity of the negawatts with the electric energy of the electric power product;

calculates an excessive amount or insufficient amount of the electric energy when it is determined that the total quantity of the then created negawatts does not match the electric energy of the electric power product; and

controls the operation of some or all the resources constituting the relevant resource group so that the total quantity of the then created negawatts will be decreased or increased by the calculated excessive amount or insufficient amount of the electric energy.

15. The electric power creation control method according to claim 6, wherein the first step includes:

defining control to create the negawatts or posiwatts that meet a definition of the electric power product in response to information of the resource group generated by the resource group generation unit and designation of an electric power product profile, by using the resources designated by the resource group generated by the resource group generation unit; and

wherein the electric power product profile is metadata in which content of the electric power product that the aggregator tenders a bid for sale is described.

16. The electric power creation control method according to claim 15, further comprising:

when the negawatts created by the resource group are inconsistent with the definition in the electric power product profile with respect to any specific resource of the resources, making a definition to issue a command to perform control driving to correct the inconsistency.

17. The electric power creation control method according to claim 16, further comprising:

determining PID control parameters to correct the inconsistency with reference to the resource group and the characteristics of the specific resource and by a gain control method by means of Nyquist diagram analysis.

18. The electric power creation control method according to claim 15,

wherein the selected control scenario defines control to create the negawatts or posiwatts that meet the definition of the electric power product by satisfying the conditions of the electric power product on the basis of the profile of each resource in the resource group generated by the resource group generation unit.