Electric Distributed Constant Measurement of Long Steel Structures When Fault Ground Connection Happened

Abstract

An electric distributed constant measuring system for underground pipeline safety inspection is constructed. In experiment, a ground resistance was used to simulate a real fault ground accident, and then the characteristic impedance and propagation constant were measured. It is confirmed that these measuring results change according to the accident position and ground resistance value. Therefore, it is considered that the accident position might be estimated by the deviation of the values.