Abstract
Various stabilizing equipments have been installed in modern power systems to enhance power system stability and its stabilizing algorithms have become more complicated(3).
Most of training simulators, however, simulate a power system by performing power flows and frequency deviation calculations(2). Since these simulators ignore dynamics of individual generators, it is impossible to simulate power swings and out-of-step phenomena which are closely connected with these equipment's actions. To simulate these actions automaticaly in the training simulator, a transient stability calculation program must be incorporated.
There are two methods. In one method, a transient stability calculation program is linked to a conventional training simulator using an event sequence file and called every time it is required(4)(5). In the other method, a training simulator involvs a transient stability calculation program itself and simulates the generator dynamics and stabilizing equipment continuously(6). However, to adopt the latter method, a transient stability calculation program that can simulate power swings in real time must be developed. The application of this method to a large power system with more than 100 generators has not been reported so far.
This paper presents a transient stability calculation method which can simulate a large power system with more than 100 generators faster than real phenomena, and it's application to a training simulator.
