MODAL REDUCED DYNAMIC EQUIVALENT MODEL FOR ANALOG TYPE POWER-SYSTEM SIMULATOR

Analog type power system simulators are playing important roles in cas es that real time dynamic studies are required. Power system reduction s are more important in analyses using an analog type simulator than a digital computer due to facilities limitations. This paper describes a modal reduced dynamic equivalent model which was developed for an an alog type power system simulator to provide power system reductions. T he model is implemented by using a modal analysis approach based on a digital type synchronous generator model. In simulator tests on a 28-m achine power system, the model is judged to be useful for representing subsystems to be reduced in an analog type simulator.