Application Of 110kv And 220kv XLPE Power Cables Damped Oscillating Wave Test

March 21, 2011, Shenzhen Power Supply Bureau using OWTS (HV250) dampedoscillation (a slowly decaying alternating sine wave) test technology for 220kV power cableline for on site PD detection and pressure testing, which is the 220kV voltage level for thefirst time to carry out the damping oscillatory state detection. The test project is the world'sfirst large scale investment in power grids 110kV and higher professional and technicalservices, high voltage cable testing, international authority by the damped oscillatorytechnical experts Edward Gulski personally testing guidance, a total of 3 Power SupplyBureau, Shenzhen, and 14 back to back to 220kV and 110kV XLPE cable lines forhigh pressure oscillation detection test, the main tests include: Sasser site partial discharge,pressure testing, partial discharge source location, measurement and insulation dielectric losshealth diagnosis, evaluation, and accumulated a large number of damped oscillatorytechnology field test data and experience, safe and reliable operation in the protection grid atthe same time, the domestic power industry but also for further understanding and study ofdamping oscillation detection technology to lay a good foundation.Based on the test project to study the basic skills of learning damping oscillationprinciple, the principle of the key elements for field testing, including international testingstandards, the ringing voltage generation, etc., details of 110kV, 220kV XLPE cable dampingoscillation detection technology site testing methods and testing procedures. Finally, somehigh voltage cable lines to detect a typical case of Sasser careful analysis and discussion ofvalidation in the 110kV, 220kV power cables using damped oscillation on the insulation statedetection technology, the applicability and effectiveness, compared to the technology andtraditional techniques of the pros and cons of testing, so as to run the department in a timelymanner to carry out the main power grid network state maintenance and high voltage cablelines to provide consumers an alternative deal with lack of technical reference..