A Study on the Suppression of Abnormal Field Voltage in the Static Excitor Type Synchronous Generator

정지여자형 동기발전기의 계자이상전압 억제에 관한 연구

This paper describes the generation region and suppression effect of the abnormal field voltage induced when the synchronous generator is switched to the infinite bus, the critical value of negative field current is calculated by simmulation which has parameters of the phase difference and voltatge ratio between the bus and the generator. The suppression effect of discharge resistance connected in parallel with the field circuit is also investigated. According to this study, the optimal value of discharge resistance which can suppress effectively the abnormal field voltage may be calculated.