Mechanism on Breakdown Phenomenon of Cable Joint with Impurities
The electric-field intensity around the cable joint is computed based on the finite element method when the power cable is loaded on the 1 10kV constant voltage source. If there are impurities in the cable joint, the impurities would cause the local electrical field distorted and the electric-field intensity increasing sharp. The insulation materials are breakdown when the local electrical field is distorted for the intensity exceeding the dielectric strength possibly. To analyze the mechanism on breakdown phenomenon mathematical models are established according to cable joint with impurities, and the distribution of the electric-field intensity on the models is computed when loaded on the 110kV constant voltage source. In the test, cable joint with impurities run on different constant voltage source. The result shows the discharge path in the cable joint with impurities.
finite element method power cables joint electrostatic field impurity mechanism on breakdown
Chengwei Chen Gang Liu Guojun Lu Jin Wang
School of Electric Power, South China University of Technology, Guangzhou, 510640, China Central Testing and Researching Institute of Guang Zhou Power Supply Company, Guangzhou, 510310, Chi
国际会议
哈尔滨
英文
595-597
2009-07-19（万方平台首次上网日期，不代表论文的发表时间）