上海电网220kV一个半断路器接线继电保护设计

Protective relay design for 220 kV bus scheme with one-and-half breaker in Shanghai electric power network

相对于常规双母线接线方式 ,2 2 0kV一个半断路器接线方式下继电保护及相关二次回路要复杂得多 ,但又与 5 0 0kV系统有所不同。以 5 0 0kV泗泾变电站的 2 2 0kV系统为例 ,结合上海电网的实际情况 ,对 2 2 0kV一个半断路器接线方式下继电保护、二次回路的配置及设计作出探讨 。

Compared with that in conventional 220 kV duplicate bus scheme,the protective relay and secondary circuit in 220 kV bus scheme with one and half breaker are obviously more complicated.It is also different from that in 500 kV system.Taking the 220 kV system of 500 kV Sijing substation as an example,and considering the facts of Shanghai electric power network,the configuration and design of the protective relay and secondary circuit for 220 kV bus scheme with one and half breaker is discussed.A complete configuration scheme is brought forward.