电力系统自动化2018，Vol.42Issue(1)：132-137,6.DOI:10.7500/AEPS20170613014
直流滤波器高压电容器接地故障保护判据和方案
Criterion and Scheme for High-voltage Capacitor Earth Fault Protection of DC Filter
郑超 1莫品豪 2文继锋 1张晓宇 2顾乔根 1龚啸2
作者信息
- 1. 南京南瑞继保电气有限公司,江苏省南京市211102
- 2. 南瑞集团有限公司(国网电力科学研究院有限公司),江苏省南京市211106
- 折叠
摘要
Abstract
The earth fault in the high-voltage capacitor of direct current(DC)filter will greatly affect the security and stable operation of DC transmission system.The existing high-voltage capacitor earth fault protection of DC filter has the problems of poor selectivity,low sensitivity,difficult setting of definite value and so on.A new type of high-voltage capacitor earth fault protection criterion and protection scheme,which is independent of the system operating conditions,is proposed based on the requirements of DC transmission system and DC filter high-voltage capacitor protection.The proposed fault protection criterion and scheme is acquired by combining with the structural characteristics of H-type high-voltage capacitor and simplifying the earth fault model.The problems in the existing protection are solved by the proposed scheme.The actual ultra-high-voltage direct current(UHVDC)engineering simulation model is used to simulate the high-voltage capacitor earth fault.The validity and correctness of the proposed protection criterion and scheme are verified.关键词
直流输电/直流滤波器/高压电容器/接地故障Key words
direct current transmission/direct current filters/high-voltage capacitor/earth fault引用本文复制引用
郑超,莫品豪,文继锋,张晓宇,顾乔根,龚啸..直流滤波器高压电容器接地故障保护判据和方案[J].电力系统自动化,2018,42(1):132-137,6.
