DYNAMIC REACTIVE LOAD MODEL

A new dynamic reactive load model for power system dynamic voltage sta bility studies is introduced in this paper. The model is measurement-b ased and incorporates the effect of voltage regulating equipment, spec ifically, switched distribution capacitor banks and subtransmission su bstation on-load tap changer transformers. A set of parameters that re flect these delayed-action devices are involved in the proposed model. A parameter estimation scheme is introduced with the aim of minimizin g errors between model and collected data at two Pennsylvania Power an d Light Company 230/64kV substations. System simulation is also carrie d out based on the estimated parameters.