전력용(電力用) 변압기(變壓器) 고장전류(故障電流) 감소(減少)를 위(爲)한 중성점(中性点) 리액터 적용(適用) 연구(硏究)

The Application of Neutral Reactors to Limit Through fault Duty on Substation Transformer.

This paper presents the countermeasure to present the main transformer of distribution substation from deteriorating and failing due to repeated magnetic force of the transformer winding by ground fault current in 22.9kV multi grounded distribution system. The Winding strength to the short circuit current is designed to be endurable to the stress of over current. But this design is related to the manufactures. In this paper we examine the application of shunt reactor to the neutral point of the low side of the transformer to reduce fault current due to the fault in the distribution lines we have analysed the fault characteristics of the system and calculated the optimum ohmic values of the neutral reactor.