500kV非典型断路器接线的母线保护接线设计

Protection Design for Unconventional 500kV One and AHalf Breaker Bus

500 kV变电站典型接线为3/2断路器接线,2段母线,其保护方案及接线均为标准化设计。某500 kV变电站扩建中受多个因素限制,形成非典型3/2断路器及4段母线的接线形式。针对该非典型的500 kV母线接线,分析并提出相应的母线保护设计方案及接线方案,保证电网的安全运行。

For conventional 500 kV one and a half circuit breaker bus,the bus protection design scheme is standardized. One of 500 kV substation expansion project formed unconventional 500 kV one and a half circuit breaker bus. The corresponding bus protection design scheme is proposed and designed.