110kV变电所备自投供电线路拒动的原因分析

Analysis on the rejecting cause of 110 kV substation spare power supply line

首先对110 kV备用电源自投装置的原理进行介绍和系统故障拒动的原因分析,然后通过可行性论证将开关柜本体的辅助开关与保护装置的TWJ触点并联组合,成功解决拒动问题,具有较强的应用价值。

First of all, introduced the principle of 110 kV spare power automatic switch device and analyzed the reasons for the system failure and rejecting. And then through the feasibility study, parallel combined the auxiliary switch of switchgear with the TWJ contacts of protection device to resolve rejecting action problem successful, which has a strong application value.