Invention Grant
- Patent Title: Method and system for fault positioning and recovery of voltage source converter
-
Application No.: US16098878Application Date: 2017-04-25
-
Publication No.: US10476261B2Publication Date: 2019-11-12
- Inventor: 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
- Applicant: NR ELECTRIC CO., LTD , NR ENGINEERING CO., LTD
- Applicant Address: CN Jiangsu CN Jiangsu
- Assignee: NR ELECTRIC CO., LTD,NR ENGINEERING CO., LTD
- Current Assignee: NR ELECTRIC CO., LTD,NR ENGINEERING CO., LTD
- Current Assignee Address: CN Jiangsu CN Jiangsu
- Agency: JCIPRNET
- Priority: CN201610294949 20160505
- International Application: PCT/CN2017/081890 WO 20170425
- International Announcement: WO2017/190608 WO 20171109
- Main IPC: H02H7/26
- IPC: H02H7/26 ; H02H3/06 ; H02J3/36

Abstract:
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.
Public/Granted literature
- US20190140441A1 METHOD AND SYSTEM FOR FAULT POSITIONING AND RECOVERY OF VOLTAGE SOURCE CONVERTER Public/Granted day:2019-05-09
Information query