CT断线闭锁发电机差动保护的利弊剖析

Analysis on the Advantages and Disadvantages of Differential Protection of CT Broken Line Locking Generator

某垃圾焚烧发电厂#4发电机因CT二次回路断线引起差动保护动作停机,经过现场排查、相关试验验证彻底查明事故原因。本文通过对保护报告数据对比分析出CT断线未能正常闭锁差动保护的原因,并进一步探讨CT断线闭锁发电机差动保护的利与弊,为同行业继保专业人员解决同类问题提供借鉴作用。

The #4 generator of a waste incineration power plant was shut down due to the disconnection of the CT secondary circuit.After the on-site inspection and relevant test verification,the cause of the accident was thoroughly ascertained.This paper compares and analyzes the data of protection report to analyze the reasons for the failure of CT disconnection to prevent normal differential protection,and further explores the advantages and disadvantages of differential protection of CT disconnected generators,and provides solutions for similar problems in the same industry.Learn from the role.