Signal Processing Technology for Fault Location System in Underground Power Cable

Abstract

With rapid growth of industry, underground power delivery systems are growing so rapidly and its capacity also growing. So if there are any accident in underground power cable, its inference is too great to count. So power system operators should find its fault location as soon as possible and replace it. But it is difficult to find its fault location for underground power cable. We are developing fault location system for underground power cable which can detect its fault location exactly. This system usually monitor underground power cable on-line. But if there are an accident, it record its transient signal and we can calculate fault location by analyzing it. To develop fault location system for power cable, we needed fault simulation system and we installed it physically and tested at various point. In this thesis, we describe on signal processing technology to detect fault location on power cable and on the result of tested fault location performance