发明授权
- 专利标题: Method and system for fault positioning and recovery of voltage source converter
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申请号: US16098878申请日: 2017-04-25
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公开(公告)号: US10476261B2公开(公告)日: 2019-11-12
- 发明人: Gang Li , Yu Lu , Zhaoqing Hu , Jie Tian , Yunlong Dong , Tiangui Jiang , Haiying Li , Yadong Feng , Ke Wang , Jiang Lu , Shunke Sui , Hui Wang , Nannan Wang
- 申请人: NR ELECTRIC CO., LTD , NR ENGINEERING CO., LTD
- 申请人地址: CN Jiangsu CN Jiangsu
- 专利权人: NR ELECTRIC CO., LTD,NR ENGINEERING CO., LTD
- 当前专利权人: NR ELECTRIC CO., LTD,NR ENGINEERING CO., LTD
- 当前专利权人地址: CN Jiangsu CN Jiangsu
- 代理机构: JCIPRNET
- 优先权: CN201610294949 20160505
- 国际申请: PCT/CN2017/081890 WO 20170425
- 国际公布: WO2017/190608 WO 20171109
- 主分类号: H02H7/26
- IPC分类号: H02H7/26 ; H02H3/06 ; H02J3/36
摘要:
A method for fault positioning and recovery of a voltage source converter includes following steps. Locking a converter station when it is detected that an alternating-current voltage contains a zero sequence voltage or a direct-current voltage contains an unbalanced voltage. Positioning a fault by continuing to detect the zero sequence voltage of an alternating-current side of the converter. Recovering operation of each station after the fault is positioned. The method for fault positioning and recovery is simple, practical, has high reliability, and can effectively detect the problems that each station contains a zero sequence voltage of an alternating-current side and cannot easily position a fault caused due to transmission of the zero sequence voltage of the alternating-current side to an opposite-side alternating-current system via a voltage source converter.
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