500 kV孝感变电站220 kV母线保护双重化改造

The Modification of 220 kV Bus Protection into Duplex Configuration in 500 kV Xiaogan Substation

介绍了500 kV孝感变电站在220 kV母线不停电情况下进行母线保护双重化改造的过程,改造后孝感变220 kV母线拥有了两套保护,每套母线保护可以轮流退出运行进行定期维护,从而消除了电网运行中的安全隐患。

Under energized condition of 220 kV bus,the process of retrofitting its bus protection into duplex configuration in 500 kV Xiaogan substation was introduced. After the retrofit, the 220 kV bus of Xiaogan substation has two sets of protection, and each set can be out of service by turns for periodic maintenance; thus the hidden trouble of safety in power grid operation is removed.