重视后备保护 保证电网安全

Regarding the Reserve Protection and Assuring the Power Net Security

文章分析了有关继电保护后备保护的问题 ,认为必须完善后备保护 ,只有这样 ,才能保证电网和设备的安全。

The paper analyses about reserve protection's problem of relay protection,it must perfect reserve protection,only in this way,to assure electric wire netting and equipment's safe.At the same time,the paper analyses the feasibility of compressor relay protection operating time class difference.