母线保护调试中支路电流计算的简化

Simplification of Calculation Method of Current Primary Value in Debugging of Busbar Protection

母线保护调试中,往往是根据保护定值采用支路电流二次值进行计算,再通过微机保护测试仪输入相应的数值进行校验。文章主要是针对母差保护调试中,先采用支路电流一次值进行计算,再通过测试仪输入相对应的二次值,并以BP-2CS母线微机保护装置为例加以说明,为现场人员调试提供了一种较简便的计算方法。

In the debugging of busbar protection,the two values of branch current are calculated according to the relay protection setting,and then the corresponding values are checked by the microcomputer protection tester. This paper adopts a calculation by first using a value of branch current and then two times corresponding value input from tester,demonstrated with the BP-2 CS bus microcomputer protection device,and provides a simple method for the calculation of on-site debugging.