Distribution system short circuit analysis-A rigid approach

The authors introduce a method of short-circuit analysis applicable to more rigid study of large-scale distribution systems. This approach is oriented toward applications in distribution system operation analysis. The solution method is an iterative compensation method, which uses a single optimally ordered factorization of the bus admittance matrix [Y_Bus], commonly used in power flow analysis, to simulate the fault condition. The use of this method in a short circuit analysis program enables a straightforward integration with a power flow program sharing a factorized Y _Bus solution, resulting in many advantages. Using a common factorization, both power flow and short-circuit analysis are possible in a single execution. Since the factorization is unchanged, multiple faults of varying types, including single line-to-ground, double line-to-ground, and three-phase, as well as cross-country, double three-phase, and triple double-line-to-ground faults can be simulated in one run of the program