Regulating device control system, regulating device control method, and recording medium for regulating the balance between power supply and demand

• US 9,812,871 B2
• Filed: 11/15/2012
• Issued: 11/07/2017
• Est. Priority Date: 02/28/2012
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Corporation
• Inventors: Sakuma, Hisato, Kudo, Koji, Yano, Hitoshi, Iwasaki, Yuma
• Primary Examiner(s): Lee, Adam
• Application Number:
  US14/381,528
• Publication Number:
  US 20150012150A1
• Time in Patent Office: 1,818 Days
• Field of Search: None
• CPC Class Codes: H01M 10/48 Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte constructional details of current conducting connections for detecting conditions inside cells or batteries, e.g. details of voltage sensing terminals, H01M50/569
• CPC Class Codes: H02J 3/32 using batteries with converting means
• CPC Class Codes: H02J 3/46 Controlling of the sharing of output between the generators, converters, or transformers
• CPC Class Codes: H02J 7/34 Parallel operation in networks using both storage and other dc sources, e.g. providing buffering H02J7/14 takes precedence
• CPC Class Codes: Y02E 60/10 Energy storage using batteries

Abstract

A regulating-device-control system for controlling the operation of regulating devices for regulating the balance between electric power supply and demand includes: memory means storing, for each regulating device, correlation information expressing correlation of a state of the regulating device, an amount of power allotted to the regulating device, and an amount of variability in performance of the regulating device; determination means receiving state information that expresses the state of each regulating device and electric power information that expresses an amount of regulated power required for regulating the balance between electric power supply and demand, and, based on the correlation information, the state information, and the electric power information, determining the amount of electric power to be allotted to each regulating device such that the total value of the amount of variability in performance of each of the regulating devices is minimized under conditions in which the state of each regulating device is the state expressed by the state information and the total value of the amount of power to be allotted to the regulating devices is the amount of regulated power; and control means controlling the operation of each regulating device based on the determination result of the determination means.

Claims

1. A regulating device control system that controls the operation of a plurality of regulating devices for regulating a balance between electric power supply and demand in an electric power system, comprising:

a memory that stores, for each of said regulating devices, correlation information that represents correlation of a state of the regulating device, an amount of electric power to be allotted to the regulating device, and an amount of variability in performance of the regulating device;

a computer processor that

estimates state information of each regulating device based on historical state information of each regulating device,

receives electric power information that indicates an amount of regulated power that is necessary for the regulation of said balance between electric power supply and demand and, based on said correlation information, said estimated state information, and said electric power information,

determines the amount of electric power to be allotted to each of said regulating devices such that a total value of the amount of variability in the performance of each of said regulating devices is minimized based on said estimated state information, wherein a total value of the amount of electric power allotted to each of said regulating devices is said amount of regulated power, and

controls the operation of each of said regulating devices based on the respective determined amount of electric power to be allotted, wherein the state of each regulating device stored in the memory is amended based on a comparison of a state reported by each regulating device and the respective estimated state.

2. The regulating device control system as set forth in claim 1, wherein the amount of variability in performance of said regulating devices is an amount of variability in deterioration of said regulating devices.

3. The regulating device control system as set forth in claim 2, wherein:

said regulating devices are storage cells; and

the states of said regulating devices include a temperature of said storage cells, an ambient temperature of said storage cells, and an amount of reduction of capacity from the initialization of said storage cells.

4. The regulating device control system as set forth in claim 2, wherein:

said regulating devices are storage cells; and

the states of said regulating devices include State of Charge (SoC) of said storage cells, a capacity of said storage cells, and an amount of reduction of capacity after initialization of said storage cells.

5. A regulating device control method in a regulating device control system that controls the operation of a plurality of regulating devices for regulating a balance between electric power supply and demand in an electric power system, comprising:

for each of said regulating devices, storing in memory means;

correlation information that indicates correlation of a state of the regulating device, an amount of electric power to be allotted to the regulating device, and an amount of variability in performance of the regulating device;

estimating state information of each regulating device based on historical state information of each regulating device;

receiving electric power information that indicates an amount of regulated power that is required for the regulation of said balance between the electric power supply and demand, and, based on said correlation information, said estimated state information, and said electric power information;

determining the amount of electric power to be allotted to each of said regulating devices such that a total value of the amount of variability in performance of each of said regulating devices is minimized based on said estimated state information, wherein a total value of the amount of electric power allotted to each of said regulating devices is said amount of regulated power; and

controlling the operation of each of said regulating devices based on the respective determined amount of electric power to be allotted, wherein the state of each regulating device stored in the memory means is amended based on a comparison of a state reported by each regulating device and the respective estimated state.

6. The regulating device control method as set forth in claim 5, wherein the amount of variability in performance of said regulating devices is an amount of variability in deterioration of said regulating devices.

7. The regulating device control method as set forth in claim 6, wherein:

said regulating devices are storage cells; and

the states of said regulating devices include a temperature of said storage cells, an ambient temperature of said storage cells, and an amount of reduction of capacity from the initialization of said storage cells.

8. The regulating device control method as set forth in claim 6, wherein:

said regulating devices are storage cells; and

the states of said regulating devices include State of Charge (SoC) of said storage cells, a capacity of said storage cells, and an amount of reduction of capacity after initialization of said storage cells.

9. A non-transitory computer-readable storage medium on which a program is stored, the program, when executed by a computer, causing the computer to perform a method comprising:

storing in a memory, for each of a plurality of regulating devices for regulating a balance between electric power supply and demand in an electric power system, correlation information that indicates correlation of a state of the regulating device, an amount of electric power to be allotted to the regulating device, and an amount of variability in performance of the regulating device;

estimating state information of each regulating device based on historical state information of each regulating device;

receiving electric power information that indicates an amount of regulated power that is required for regulating said balance between said electric power supply and demand, and, based on said correlation information, said estimated state information, and said electric power information;

determining the amount of electric power to be allotted to each of said regulating devices such that a total value of the amount of variability in performance of each of said regulating devices is minimized based on said estimated state information, wherein a total value of the amount of electric power allotted to each of said regulating devices is said amount of regulated power; and

controlling the operation of each of said regulating devices based on the respective determined amount of electric power to be allotted, wherein the state of each regulating device stored in the memory is amended based on a comparison of a state reported by each regulating device and the respective estimated state.

10. The non-transitory computer-readable storage medium as set forth in claim 9, wherein the amount of variability in performance of said regulating devices is an amount of variability in deterioration of said regulating devices.

11. The non-transitory computer-readable storage medium as set forth in claim 10, wherein:

said regulating devices are storage cells; and

the states of said regulating devices include a temperature of said storage cells, an ambient temperature of said storage cells, and an amount of reduction of capacity from the initialization of said storage cells.

12. The non-transitory computer-readable storage medium as set forth in claim 10, wherein:

said regulating devices are storage cells; and

the states of said regulating devices include State of Charge (SoC) of said storage cells, a capacity of said storage cells, and an amount of reduction of capacity after initialization of said storage cells.