Abstract
Power cable is an important carrier of power in medium voltage distribution network. It plays an important role in power transportation and power distribution. Whether the insulation performance of the cable is intact in actual production is an important factor atTecting power safety. Of medium voltage distribution network cable distribution parameter calculation and analysis of decoupling, build the equivalent circuit model of cable insulation defects, with the voltage oscillation wave under transient voltage and current as the information sources, dynamicaUy generated waiting for cable joint insulation defects with reference data set of fault diagnosis, fault diagnosis of the defect or judging function, the cable joint is obtained by a maximum of judging function of defect location and defect severity, in order to complete the medium voltage distribution network cable joint composite insulation defects detection technology is designed, fmaUy adopts the form of the simulation results verify the etTectiveness of the designed by detecting technology.
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