SYSTEM FOR CONTROL OF WIND POWER GENERATION STORAGE BATTERY AND METHOD OF CONTROL THEREOF

• US 20110288691A1
• Filed: 01/06/2010
• Published: 11/24/2011
• Est. Priority Date: 01/07/2009
• Status: Active Grant

• Current Assignee: Shin-Kobe Electric Machinery Company Limited (Resonac Holdings Corp.)
• Original Assignee: Shin-Kobe Electric Machinery Company Limited (Resonac Holdings Corp.)
• Inventors: Furukawa, Toshiyuki, Abe, Keiko, Watanabe, Masahiro, Hirose, Yoshikazu, Takabayashi, Hisaaki, Kobayashi, Yasuhiro
• Granted Patent: US 9,124,135 B2
• Time in Patent Office: Days
• US Class Current: 700/292
• CPC Class Codes: F03D 7/00 Controlling wind motors supplying or distributing electrical power H02J, e.g. arrangements for adjusting, eliminating or compensating reactive power in networks H02J3/18; controlling electric generators H02P, e.g. arrangements for controlling electric generators for the purpose of obtaining a desired output H02P9/00
• CPC Class Codes: F03D 9/11 storing electrical energy
• CPC Class Codes: F03D 9/25 the apparatus being an electrical generator F03D9/22 takes precedence
• CPC Class Codes: G01R 31/367 Software therefor, e.g. for battery testing using modelling or look-up tables
• CPC Class Codes: G01R 31/392 Determining battery ageing or deterioration, e.g. state of health
• CPC Class Codes: H01M 10/46 Accumulators structurally combined with charging apparatus circuits for charging H02J7/00
• 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 7/0069 Charging or discharging for charge maintenance, battery initiation or rejuvenation
• CPC Class Codes: Y02E 10/72 Wind turbines with rotation axis in wind direction
• CPC Class Codes: Y02E 10/76 Power conversion electric or electronic aspects
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02E 70/30 Systems combining energy storage with energy generation of non-fossil origin

Abstract

While a control method is established which can maximize the lifetime of an storage battery based on a SOC capable of maximizing the lifetime of the storage battery under a temperature condition and a wind condition at an electricity generation site and on currently known ones of other operational conditions, a control system is constructed which can feedback to an actual wind power generation and storage battery system. The control system includes a wind power generation and storage battery system, an storage battery operation and deterioration data collection unit for collecting data of the wind power generation and storage battery system, an storage battery operation and deterioration relation assessment unit for assessing a relation between an operation of the storage battery and deterioration thereof based on the collected data, an storage battery operation planning unit for planning such a method of operating the storage battery as to satisfy a necessary lifetime requirement using information obtained by the storage battery operation and deterioration relation assessment unit, and an storage battery operation instruction unit for instructing the wind power generation and storage battery system to operate the storage battery in accordance with the plan of the storage battery operation planning unit.

Claims

1. A system for control of a wind power generation storage battery characterized by being provided with:

a wind power generation and storage battery system having an storage battery;

an storage battery operation and deterioration data collection unit for collecting data of the storage battery in the wind power generation and storage battery system;

an storage battery operation and deterioration relation assessment unit for assessing a relation between an operation of the storage battery and a lifetime and deterioration thereof based on the data collected by the storage battery operation and deterioration data collection unit;

an storage battery operation planning unit for planning a method of operating the storage battery which satisfies a necessary lifetime requirement based on information obtained by the storage battery operation and deterioration relation assessment unit; and

an storage battery operation instruction unit for instructing the operation of the storage battery in the wind power generation and storage battery system in accordance with the plan of the storage battery operation planning unit.

3. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that the storage battery operation and deterioration relation assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit are each formed of a software program operating on a computer, and the storage battery operation and deterioration relation assessment unit performs assessment processing with respect to the operation and deterioration data of the storage battery collected by the storage battery operation and deterioration data collection unit in the wind power generation and storage battery system using a Taguchi method (dynamic characteristic).

4. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that the storage battery operation data collected by the storage battery operation and deterioration data collection unit includes at least one of an equal charging interval, an equal charging voltage, an equal charging amount, a SOC use range, a charge-discharge cycle (period), a pattern of charging and discharging, a time interval between charging and discharging, a charging/discharging current, a temperature, and charging efficiency.

5. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that the storage battery deterioration data collected by the storage battery operation and deterioration data collection unit includes at least one of an storage battery capacity reduction, positive grid corrosion, negative plate sulfation, electrolyte stratification, and an electrolyte amount.

6. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that a warning is displayed on the assumption that limit values of an storage battery lifetime and a deteriorated portion are an storage battery capacity reduction of not more than minus 30%, a positive grid corrosion amount of not more than 40 wt %, a lead acid sulfate amount of not more than 15% in negative plate sulfation, and an electrolyte specific gravity difference of not more than 0.1 in electrolyte stratification, each compared with the rating of the storage battery.

7. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that a lead acid storage battery is used as the storage battery.

8. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that the storage battery operation and deterioration data collection unit is formed of a semiconductor chip provided in the storage battery.

9. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that the wind power generation and storage battery system having the storage battery and the storage battery operation and deterioration data collection unit for collecting the data of the storage battery in the wind power generation and storage battery system are provided at an electricity generation site, and the storage battery operation and deterioration relation assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit are provided at a remote control site coupled via a network to the electricity generation site.

10. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that the storage battery operation and deterioration relation assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit are each formed of a software program operating on a computer.

11. A system for control of a wind power generation storage battery according to claim 1 or 2, characterized in that the storage battery operation and deterioration relation assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit output a predicted lifetime under a specified condition and a predicted lifetime under an optimum condition.

2. A system for control of a wind power generation storage battery characterized by being provided with:

a wind power generation and storage battery system having an storage battery;

an storage battery operation and deterioration data collection unit for collecting data of the storage battery in the wind power generation and storage battery system;

an storage battery operation and deterioration relation assessment unit for assessing a relation between an operation of the storage battery and a lifetime and deterioration thereof based on the data collected by the storage battery operation and deterioration data collection unit;

an storage battery cost assessment unit for assessing information on cost of the storage battery;

an electric power company penalty cost assessment unit for assessing cost including interconnected system penalty cost paid to an electric power company and a profit from wind power generation;

an storage battery operation planning unit for planning an optimum method of operating the storage battery based on information obtained by the storage battery operation and deterioration relation assessment unit, the storage battery cost information, and electric power company cost information; and

an storage battery operation instruction unit for instructing the operation of the storage battery in the wind power generation and storage battery system in accordance with the plan of the storage battery operation planning unit.

12. A method of controlling a system for control of a wind power generation storage battery being provided with a wind power generation and storage battery system, an storage battery operation and deterioration data collection unit for collecting data of the wind power generation and storage battery system, an storage battery operation and deterioration relation assessment unit for assessing a relation between an operation of an storage battery and a lifetime and deterioration thereof based on the data collected by the storage battery operation and deterioration data collection unit, an storage battery operation planning unit for planning a method of operating the storage battery which satisfies a necessary lifetime requirement using information obtained by the storage battery operation and deterioration relation assessment unit, and an storage battery operation instruction unit for instructing the wind power generation and storage battery system to operate the storage battery in accordance with the plan of the storage battery operation planning unit, the method being characterized by comprising the step of:

when the relation between the operation of the storage battery and the deterioration thereof is assessed, and the operation of the storage battery that satisfies the necessary lifetime requirement is planned, determining a degree of influence of an operational condition for the storage battery on the storage battery lifetime and a deteriorated portion using a Taguchi method (dynamic characteristic) to assess a relation between the operational condition and the storage battery lifetime and deteriorated portion.

13. A method of controlling a system for control of a wind power generation storage battery being provided with a wind power generation and storage battery system having an storage battery, an storage battery operation and deterioration data collection unit for collecting data of the storage battery in the wind power generation and storage battery system, an storage battery operation and deterioration relation assessment unit for assessing a relation between an operation of the storage battery and a lifetime and deterioration thereof based on the data collected by the storage battery operation and deterioration data collection unit, an storage battery cost assessment unit for assessing information on cost of the storage battery, an electric power company cost assessment unit for assessing cost including interconnected system penalty cost paid to an electric power company and a profit from wind power generation, an storage battery operation planning unit for planning a cost optimum method of operating the storage battery based on information obtained by the storage battery operation and deterioration relation assessment unit, the storage battery cost information, and electric power company cost information, and an storage battery operation instruction unit for instructing the operation of the storage battery in the wind power generation and storage battery system in accordance with the plan of the storage battery operation planning unit, the method being characterized by comprising the step of:

when the relation between the operation of the storage battery and the deterioration thereof is assessed, and the operation of the storage battery that satisfies a necessary lifetime requirement is planned, determining a degree of influence of an operational condition for the storage battery on the storage battery lifetime and a deteriorated portion using a Taguchi method (dynamic characteristic) to assess a relation between the operational condition and the storage battery lifetime and deteriorated portion.