Abstract
With the accelerating construction of strong smart grid, and the grid voltage level rising, performance requirements for the electrical insulation of electrical equipment also continue to increase. The ( XLPE ) cable with good electrical and thermal performance and simple structure, the manufacturing cycle is short, safe and reliable power supply etc, which is widely used in power system ; Partial discharge is in the power cable to run a larger security risks is a sign of deterioration of the cable insulation is caused by insulation deterioration of important reasons . In this paper, based on variable frequency resonant damped oscillatory wave voltage XLPE cables and their connectors partial discharge site detection technology, the damped oscillatory wave voltage and power frequency voltage equivalent; the field test requirements, parameter optimization and performance detection impedance, and use advanced digital signal processing methods to analyze the test data processing, to provide a reference for the cables and their joints more accurately determine the insulation condition.
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