220 kV母线失灵保护双重化改造工程实践

Practice on Modification to Duplicate 220 kV Busbar Fault Protection

针对220 kV母线失灵保护双重化改造工程具有施工复杂、技术难度大、危险点多等特点,从220 kV母线保护双重化改造的前期准备,施工步骤,完工送电等环节进行全过程分析,给出了改造全过程的方案及注意事项,包括现场勘查项目、安全措施、跳闸回路改造、启动失灵回路改造等。

Aiming at problems of modification to duplicate 220 kV busbar fault protection,complex construction,technical difficulty and many dangerous points,this paper has analyzed the whole process in terms of preliminary preparation,construction steps,completion,power transmission and others for modification to duplicate 220 kV busbar fault protection,and proposed measures and matters to be mentioned for modification of the whole process,including on-site check,safety measures,trip circuit transformation,start failure circuit transformation.