직류 전기철도에서의 전식방지를 위한 설비별 요구사항 도출

초록

Since the traffic demand of the heart of the cities is increasing, also construction of heavy rail transit and light rail transit centering around metropolises is increased. These heavy rail transit and light rail transit are operated on DC traction power supplies, yet there are electrical corrosion problems upon electric railroads, gas pipelines, oil pipelines and waterworks caused by stray current in the power supply system. There are severe standards to reduce influence of electrical corrosion which has been caused by DC feeding system. However, although there are some domestic measurement following urban railway construction regulation, the korea electric power industry codes and standards, KS C IEC 62128-2, technical regulation of Tokyo task force for prevention of electrical corrosion to built up devices, they are in vain since the explanation, testment and measurement are confused by operating subjects. Therefore, it is needed to establish a formal standard which can be adjusted among administrators who shares common interests, such as urban railway, operation agency of underground metal utilities. This article presents investigation on past formal standards which concerned with method of electrical corrosion and basic demands to prevent electrical corrosion on electric railroads.