宁夏电力Issue(6)：61-66,6.DOI:10.3969/j.issn.1672-3643.2024.06.010
全光纤电流互感器故障原因分析及改进措施
Fault cause analysis and improvement measures of all-fiber optic current transformers
马吉 1宋海龙 1柴斌 1柴泽宁 1宋泽炜1
作者信息
- 1. 国网宁夏电力有限公司超高压公司,宁夏银川 750011
- 折叠
摘要
Abstract
As an important measuring device in converter stations,the all-fiber optic current transformer(AFOCT)is essential for ensuring the safe and stable operation of DC systems.This paper presents a case study of a circuit breaker tripping event caused by abnormal measurement data from an unbalanced AC filter AFOCT in a±800 kV converter station.Firstly,the basic working principle of AFOCT is described in detail,followed by the derivation of its measure-ment principles.Secondly,an in-depth research is conducted through methods including correctness analysis of protec-tion actions,on-site fault troubleshooting,on-site verification,and vibration impact testing of the polarization-maintaining cable.The root cause of the abnormal measurement data is identified,as well as the fault mechanism related to cable vibration effects.Finally,specific improvement measures and engineering suggestions are proposed to address the issue of abnormal measurement data caused by vibration interference,providing theoretical support for the engineering design,on-site construction acceptance,and reliability enhancement of AFOCT in converter stations.关键词
全光纤电流互感器/故障原因分析/保偏光缆/振动影响/改进措施/工程建议Key words
all-fiber current transformer/fault cause analysis/polarization-maintaining cable/vibration effect/improve-ment measures/engineering proposal分类
信息技术与安全科学引用本文复制引用
马吉,宋海龙,柴斌,柴泽宁,宋泽炜..全光纤电流互感器故障原因分析及改进措施[J].宁夏电力,2024,(6):61-66,6.
