EXPERIENCE WITH THE IDENTIFICATION AND TUNING OF EXCITATION SYSTEM PARAMETERS AT THE 2ND NUCLEAR-POWER-PLANT OF TAIWAN-POWER-COMPANY

Experience with the identification and tuning of exciter constants for a generating unit at the Second Nuclear Power Plant of Taiwan Power C ompany is reported. Field test is first performed on the excitation sy stem with the generator open-circuited. Since the field test results d iffer from the computer simulation results using manufacturer's consta nts, we first modify the manufacturer's constants based on our previou s experience to reach a preliminary set of parameters for the excitati on system. Then a hybrid nonlinear simulation-sensitivity matrix metho d is developed to further refine the excitation system parameters. The exciter constants are tuned in order to give better dynamic response before a power system stabilizer is applied to the generator. Field te sts are then performed in order to compare the dynamic response of the generator without and with power system stabilizer.