Compatibility among Electrical Network Component Models of Computational Power System Analysis Programs

Abstract

This work presents the necessary procedure to make the transformer models of the HarmZs program (a CEPEL’s production grade software for harmonic analysis of electrical power systems) and the ATP (Alternative Transients Program) compatible. In addition, the frequency equivalent of the widely used ATP’s Bergeron transmission lines model, which considers frequency independent parameters, has been implemented in the HarmZs code. For this implementation, it was necessary to determine its nodal admittance matrix. Besides the theoretical development, results are presented regarding a medium-sized transmission system, showing the differences between the Classical and Bergeron transmission lines models in the HarmZs and the agreement between the two programs when the models are matched.