Model Derivation of an Adjustable Speed Generator and its Excitation Control System

Abstract

An adjustable speed generator has the capability of controlling easily its output power by secondary-excitation control system. It makes a contribution to increasing AFC (Auto Frequency Control) operation capacity on electric network, and makes it possible for the disturbance to be decreased rapidly when fault is occurred. In order to simulate such a response of the system in network transient analyzing program, we derived the system model which includes a circuit for excitation power supply, and analyzed the validity of the proposed model.