A cable partial discharge on-line monitoring method based on GPS clock wireless synchronization

Abstract

In recent years, power cables from 10kV to higher voltage level are widely used in cities for power transmission. As the main power transmission cable of power transmission and distribution, the most important parameter of its running state is the insulation condition of the cable, which can usually be reflected by the magnitude of grounding current, serious partial discharge or loss angle. This paper proposes a cable partial discharge on-line monitoring method based on GPS clock wireless synchronization (CPD-GPS), through introduceing GPS clock wireless synchronization, CPD-GPS can collect data timely and accurately. Experiments show, our method can effective realized the cable fault monitoring and has very important application value for the safe and stable operation of power grid.