Study on Methodology Monitoring Power Cable Insulation Defects
Yu Quan, Shi Wei Qi, En Ze Zhou, Bei Bei Wang, Bo Zhao · Advanced materials research · 2013
This paper presents a new methodology for power cable monitoring. The methodology makes the transient voltage and current of the power cable as the source; decomposing the transient voltage and current to the harmonic sequence, then the defecting insulation identification function can be built. Calculating the distribution of the identification function in harmonics and the frequency characteristics of the equivalent insulation resistance , the power cable insulation defects monitoring and diagnosis can be achieved. Only the existing monitoring system hardware without external source can be used by the method ology mentioned, the cable insulation defects can be monitored simply and practically. The methodology is benefit for Power cable insulation defects contribute to the development of monitoring cable insulation defects technology.