Short Circuit Current Algorithm and Software Design Based on IEC60909 Standard

Abstract With the continuous growth of load and enhancement grid structure, problem excessive short circuit current has become a key factor affecting safe operation China Southern Power Grid. The comparison measured data shows that calculation results Grid are optimistic based on existing method. It brings difficulties to arrangement power mode. This paper first briefly introduces principle IEC60909 Standard (short for Short Circuit Current Calculation Standard). And this standard, an improved algorithm short-circuit is proposed. FCAP Fault Analysis Program), newly developed software algorithm, compared with other similar being popular in domestic foreign prove its engineering practical value.