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1. (WO2017148251) CONTROL SYSTEM FOR ENHANCING FREQUENCY SUPPORT OF WIND TURBINE GENERATOR

Pub. No.:    WO/2017/148251    International Application No.:    PCT/CN2017/073109
Publication Date: Sat Sep 09 01:59:59 CEST 2017 International Filing Date: Thu Feb 09 00:59:59 CET 2017
IPC: H02J 3/24
Applicants: WIND POWER TECHNOLOGY CENTER OF GANSU ELECTRIC POWER COMPANY
甘肃省电力公司风电技术中心
STATE GRID CORPORATION OF CHINA
国家电网公司
GANSU ELECTRIC POWER COMPANY OF STATE GRID
国网甘肃省电力公司
SHANGHAI JIAO TONG UNIVERSITY
上海交通大学
Inventors: WANG, Ningbo
汪宁渤
DING, Kun
丁坤
LU, Liang
路亮
ZHOU, Shiyuan
周识远
ZHANG, Chen
张琛
LI, Jin
李津
ZHI, Jing
陟晶
LI, Zheng
李征
BAI, Nianzong
摆念宗
CAI, Xu
蔡旭
HAN, Zifen
韩自奋
CAI, Youming
蔡游明
Title: CONTROL SYSTEM FOR ENHANCING FREQUENCY SUPPORT OF WIND TURBINE GENERATOR
Abstract:
Disclosed in the present invention is a control system for enhancing frequency support of a wind turbine generator, and the system comprises a rotor, a gearbox, a power generator, and a current transformer. The system further comprises a supercapacitor energy storage device comprising a DC-DC converter and a supercapacitor. The current transformer comprises a direct current busbar, and the supercapacitor is electrically connected to the direct current busbar via the DC-DC converter. The supercapacitor can perform, according to an operating state of the wind turbine generator, ordered charging or discharging operation to maintain an operating condition of itself, thus providing superior reliability.