数字化变电站母差保护接口方式

The Practice of Digital Substation Expansion Interface Mode

数字化变电站的扩建改造中,对继电保护设备的接口工作,目前可借鉴的工程经验非常少。作为浙江省第一个数字化变电站扩建工程,本文以芝堰变500kV信安I线间隔扩建工程为实例,通过500kVII母母差保护接口,从SCD文件配置更改、试验前安全措施的实施和接口试验三个方面,对数字化变电站扩建接口方式进行了深入的探讨。

In the process of digital substation expansion and transformation, the practical engineering experience is so little at present, particularly for the Secondary relay protection equipment expansion interface work. As the first expanded digitized substation in Zhejiang, this paper takes the power line named ＂Xin＇an I＂ of 500kV Zhiyan Substation for example, by way of expansion interface work on differential relaying protection of 500kV II busbar, deeply discuss on the mode of expansion and transformation in a digital substation form three aspects, which is the SCD file configuration changes, the safety measures before the test and the interface work.