一起保护与开关配合问题的解决

A Solution of Coordination Problem between Protection and Switchgear

厦门ABB10kV高压开关配用深圳南瑞的ISA-351G馈线保护装置,出现低周减载不能出口及重合闸不动作的问题。这里介绍通过修改保护装置逻辑的解决办法,并在实践中证明是有效的解决办法。

Problem of under-frequency load shedding and auto-reclosure malfunction arouses when applying protection of ISA-351G of Shenzhen NARI onto new-type 10kV switchgear VD4 of ABB Xiamen. Here a solution method through revising the protection logic is proposed and it is proven to be effective in practice.