Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 1999.11a
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- Pages.59-62
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- 1999
Dependence of needle tip Curvature of the Inception Stress and Propagation of electrical tree
침전극의 곡율반경에 따른 트리개시전계 및 트리진전 특성
Abstract
Inception and propagation of electrical tree and properties of Partial discharge(PD) pulses accompanying with tree as a function of needle tip radius in low density polyethylene were discussed. To study on these characteristics in different tip radius, we used specimens with needle-plane electrode system made of LDPE, observed inception and propagation of electrical tree by optical microscope with computer and investigated the characteristics of the phase resolved PD pulses accompanying with propagation of electrical tree. The PD quantities detected and analysed were PD magnitude, mean phase angle, average discharge, and the statistical characteristics of the PD pulses. As the tip radius
Keywords
- bush-type electrical tree;
- PD magnitude;
- average discharge;
- mean phase angle;
- average discharge;
- stress relaxation;
- tip radius;
- tree inception stress