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Title:
OFFSHORE WIND POWER DC TRANSMISSION SYSTEM EMPLOYING TWO CONNECTED TRANSFORMERS, AND CONTROL METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/189754
Kind Code:
A1
Abstract:
The present application discloses an offshore wind power DC transmission system employing two connected transformers, and a control method therefor. The system comprises a plurality of wind farm booster stations. The wind farm booster stations are divided into groups and connected to AC switch stations, then are connected using two transformers connected in parallel, and are finally connected to a DC system. When any of the connected transformers experiences a failure and stops operating, a surplus power of the other connected transformer is quickly calculated, and is compared with output powers of the wind farm booster stations to determine a disconnected wind farm booster station, thereby controlling offshore wind farms and preventing large-scale disconnections thereof, and accordingly improving the stability and reliability of DC transmission of the offshore wind farms.

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Inventors:
SONG YANTAO (CN)
XU MENGYANG (CN)
WU QINGFAN (CN)
LIU XUHUI (CN)
FAN XUEFENG (CN)
WANG SHENG (CN)
LI QIAN (CN)
WU DONGJUE (CN)
YUE XIAOGE (CN)
LIU ZHIJUN (CN)
TU RENCHUAN (CN)
WANG QIUKAI (CN)
LIU CHEN (CN)
ZHANG SHAOJUN (CN)
LUO LEI (CN)
TIAN PEITAO (CN)
FAN ZIQIANG (CN)
XU PENGJIAN (CN)
WANG CHANGJIU (CN)
LU QI (CN)
LI YAFENG (CN)
MAO CHENGBO (CN)
FAN BAOFENG (CN)
Application Number:
PCT/CN2020/108292
Publication Date:
September 30, 2021
Filing Date:
August 10, 2020
Export Citation:
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Assignee:
XJ ELECTRIC CO LTD (CN)
XJ GROUP CORP (CN)
International Classes:
H02J3/00
Domestic Patent References:
WO2009016113A12009-02-05
Foreign References:
CN108258727A2018-07-06
CN110350574A2019-10-18
CN110224438A2019-09-10
CN108233409A2018-06-29
Attorney, Agent or Firm:
CHINA PAT INTELLECTUAL PROPERTY OFFICE (CN)
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