GENERAL FORMULATION FOR DYNAMIC STUDIES IN POWER SYSTEMS INCLUDING STATIC CONVERTORS.

Abstract

The presence of static convertors involves a power system in frequent waveform-dependent topological changes. A general model is described for analyzing the dynamic interaction between convertors and power systems. An efficient state-space formulation is used, with isolation of the nodal equations affected by the variable topology. The degree of system representation accepted by the model is optional, but detailed representation is recommended for the converter and ac related plant components, such as converter transformers, filters and synchronous machines. The versatility of the model is illustrated by typical cases of normal and disturbed power-system operation.