[연구논문]부하를 분담하고 있는 디젤발전기의 무한대 모선과의 병렬운전 시스템

Generally generator is connected to the bus with no load. After the connection to the bus, the frequency of generator system with no load has to be increased for preventing the reverse power. But in a few case of parallel running with infinite bus system. we have to synchronize the loaded generator to the infinite bus. The frequency of generator system with load has to be lowered for prevention of load shift to the bus system. The blackout of infinite bus decreases the parallel running generator's frequency because of load increasing. In this paper we propose a method that the generator with load maintains the frequency constantly after the blackout of infinite bus. With the constant speed control and load control method of parallel running system to the infinite bus we apply the method to the industrial generating system.