System for control of wind power generation storage battery and method of control thereof

• US 9,124,135 B2
• Filed: 01/06/2010
• Issued: 09/01/2015
• 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: Abe, Keiko, Watanabe, Masahiro, Kobayashi, Yasuhiro, Furukawa, Toshiyuki, Takabayashi, Hisaaki, Hirose, Yoshikazu
• Primary Examiner(s): DUNN, DARRIN D
• Application Number:
  US13/059,919
• Publication Number:
  US 20110288691A1
• Time in Patent Office: 2,064 Days
• Field of Search: 700/8, 700/36, 700/48, 700/49, 700/50, 700/90, 700/286, 700/291, 60/391.2, 60/391.3, 706/19, 706/21, 706/907, 705/412
• US Class Current: 1/1
• 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, comprising:

a wind power generation and storage battery system, including a storage battery;

a storage battery operation data and deterioration data collection unit, configured to collect operation data and deterioration data pertaining to the storage battery in the wind power generation and storage battery system;

a storage battery operation and deterioration relationship assessment unit, configured to assess a relationship between an operation of the storage battery and a lifetime and deterioration thereof, based on the operation data and deterioration data collected by the storage battery operation data and deterioration data collection unit;

a storage battery operation planning unit, configured to create a plan for operating the wind power generation and storage battery, wherein the plan satisfies a necessary lifetime requirement, based on information obtained by the storage battery operation and deterioration relationship assessment unit; and

a storage battery operation instruction unit, configured to instruct the operation of the storage battery in the wind power generation and storage battery system, in accordance with the plan created by the storage battery operation planning unit;

wherein the storage battery operation data and deterioration data collection unit collects at least one of the following as storage battery deterioration data;

storage battery capacity reduction data, positive grid corrosion data, negative plate sulfation data, electrolyte stratification data, and an electrolyte amount data;

wherein the storage battery operation data and deterioration data collection unit collects at least one of the following as storage battery operation data;

equal charging interval data, equal charging voltage data, equal charging amount data, State of Charge (SOC) use range data, charge-discharge cycle data, and charging/discharging current data;

wherein the storage battery operation and deterioration relationship assessment unit includes;

a deterioration sensitivity assessment unit, a use limit input unit, and an operation condition and deteriorated portion comparison and assessment unit;

wherein the deterioration sensitivity assessment unit calculates a sensitivity to a deteriorated portion of the storage battery, from the storage battery deterioration data and the storage battery operation data, by using a Taguchi method technique;

wherein the operation condition and deteriorated portion comparison and assessment unit calculates comparison and assessment data, based on a sensitivity, and based on a limit value of use conditions input from a use limit input unit; and

wherein the storage battery operation planning unit plans an operation method based on the comparison and assessment data, such that the storage battery satisfies the necessary lifetime requirement.

2. A system for control of a wind power generation storage battery according to claim 1,

wherein a warning is displayed on a display, when limit values of a storage battery lifetime and a deteriorated portion met, including:

a storage battery capacity reduction of not more than minus 30%, a positive grid corrosion amount of not more than 40 weight percent (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 a rating of the storage battery.

3. A system for control of a wind power generation storage battery according to claim 2, wherein the storage battery operation and deterioration relationship assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit collectively output:

a predicted lifetime calculated based on user selected values of specified conditions, and a predicted lifetime calculated based on optimum values of the specified conditions.

4. A system for control of a wind power generation storage battery according to claim 1, wherein a lead acid storage battery is used as the storage battery.

5. A system for control of a wind power generation storage battery according to claim 4, wherein the storage battery operation and deterioration relationship assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit collectively output:

a predicted lifetime calculated based on user selected values of specified conditions, and a predicted lifetime calculated based on optimum values of the specified conditions.

6. A system for control of a wind power generation storage battery according to claim 1, wherein the storage battery operation data and deterioration data collection unit includes a semiconductor chip disposed in the storage battery.

7. A system for control of a wind power generation storage battery according to claim 6, wherein the storage battery operation and deterioration relationship assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit collectively output:

a predicted lifetime calculated based on user selected values of specified conditions, and a predicted lifetime calculated based on optimum values of the specified conditions.

8. A system for control of a wind power generation storage battery according to claim 1,

wherein the wind power generation and storage battery system, and the storage battery operation data and deterioration data collection unit, are disposed at an electricity generation site;

and

wherein the storage battery operation and deterioration relationship assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit are disposed at a remote control site coupled via a network to the electricity generation site.

9. A system for control of a wind power generation storage battery according to claim 8, wherein the storage battery operation and deterioration relationship assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit collectively output:

a predicted lifetime calculated based on user selected values of specified conditions, and a predicted lifetime calculated based on optimum values of the specified conditions.

10. A system for control of a wind power generation storage battery according to claim 1, wherein the storage battery operation and deterioration relationship assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit include:

a software program operating on a computer.

11. A system for control of a wind power generation storage battery according to claim 10, wherein the storage battery operation and deterioration relationship assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit collectively output:

a predicted lifetime calculated based on user selected values of specified conditions, and a predicted lifetime calculated based on optimum values of the specified conditions.

12. A system for control of a wind power generation storage battery according to claim 1, wherein the storage battery operation and deterioration relationship assessment unit, the storage battery operation planning unit, and the storage battery operation instruction unit collectively output:

a predicted lifetime calculated based on user selected values of specified conditions, and a predicted lifetime calculated based on optimum values of the specified conditions.