CAJ | 학술논문

振荡电压波可以使电缆缺陷部位产生局部放电，可以用来进行电缆局部放电的定位。本文介绍了振荡波电压法在交联聚乙烯电缆局部放电定位中的应用原理，建立了电缆在正常情况下和存在局部缺陷下的二维有限元数学模型，利用有限元分析软件在振荡波电压作用下对电缆进行了电场仿真。仿真结果表明在振荡波电压作用下电缆缺陷部位电场畸变，超过气隙的击穿场强而产生局部放电。该结果为研究和设计振荡电压波系统提供了理论依据。
진탕전압파가이사전람결함부위산생국부방전，가이용래진행전람국부방전적정위。본문개소료진탕파전압법재교련취을희전람국부방전정위중적응용원리，건립료전람재정상정황하화존재국부결함하적이유유한원수학모형，이용유한원분석연건재진탕파전압작용하대전람진행료전장방진。방진결과표명재진탕파전압작용하전람결함부위전장기변，초과기극적격천장강이산생국부방전。해결과위연구화설계진탕전압파계통제공료이론의거。
This paper introduces the theory of the oscillating wave testing system and its’ theory of detection and location in XLPE cable’s partial discharge because oscillating voltage wave which leads to cable partial discharge can detect and locate the XLPE cable’s partial discharge. As the finite element numerical model of the good and the fault XLPE cable was built up, the electric field distribution of the cable was calculated by the finite element analysis software. The simulation result showed that the electric field of the cable which had fault was distorted under the effect of oscillating voltage wave, exceeding the air gap breakdown electric field and leading to cable partial discharge. The result provides a theoretical basis for the study and design of oscillating wave testing system.