가공배전계통에서 중성선과 가공지선 혼용 운용의 실효성 평가

In overhead distribution system, overhead ground wire and neutral wire are parallel connected to offer the electrical power energy and protect damage of lightning strokes. Therefore a case where the two wires become single wire, the power company can get the benefit such as installation cost saving and line fault protection by simplify of distribution line. This paper describes the result of impulse test in both system ; one is the present distribution system, the other is unified power system parallel connected overhead ground wire and neutral wire. As a result of this simulation, the present power system get lower over voltage than the unified power system.