지하 매설 배관의 부식방지를 위한 교류유도 저감대책에 관한 연구

Study on the Countermeasure to Induced AC Voltage for Protection to Corrosion of Underground Pipelines

The AC induced voltage on underground pipelines not only do harm to workers and instruments, but also cause big trouble in some case. This paper gives the mechanisms, examples, and countermeasure for the AC induced voltages which are caused by the resistive coupling between the grounding system of the 22.9kV distribution power system and the underground pipeline.