HPL550B2型断路器合闸回路重大安全隐患分析及改进方案  

Analysis and Improvement Scheme of Major Safety Hidden Trouble in HPL550B2 Circuit Breaker Switching Circuit

作　　者：向阳 黄岗[1] XIANG Yang;HUANG Gang(Zunyi Power Supply Bureau of Guizhou Power Grid Co.,Ltd.,Guizhou,Zunyi 563000,China)

机构地区：[1]贵州电网有限公司遵义供电局,贵州遵义563000

出　　处：《农村电气化》2022年第3期83-84,共2页Rural Electrification

摘　　要：深入分析500 kV HPL550B2型断路器合闸回路存在的重大安全隐患,该隐患将导致断路器重合闸拒动;针对该隐患提出简单有效的改进方案,现场实际试验验证该方案的可行性与有效性,提高了设备及系统的运行可靠性。HPL550B2 type circuit breaker is connected in series with a spring non-charged intermediate relay normally open node in the closing circuit. When this relay is damaged, no monitoring signal is sent in the background, and the circuit breaker cannot be reclosed when the circuit is faulty. The paper deeply analyzes the potential safety hazards of failure risk in the closing circuit of this type of circuit breaker, and proposes an improvement plan. The actual field test verifies the feasibility and effectiveness of the plan, and improves the operational reliability of the equipment and system.

关 键 词：断路器 重合闸拒动 运行可靠性 

分 类 号：TM63[电气工程—电力系统及自动化]