CAJ | 학술논문

研究污秽潮湿状态下绝缘子表面电场特征对提高绝缘子可靠性有重要的意义。基于污秽潮湿状态绝缘子周围电场的电阻性特点,采用离散电阻模型研究了轴向不均匀的污层对绝缘子电场和电位分布的影响。计算结果表明：绝缘子表面电场强度切向分量与绝缘子表面污秽轴向分布不均匀程度有关;流过污层的泄漏电流的焦耳热效应会加剧绝缘子表面电导率的不均匀程度。
연구오예조습상태하절연자표면전장특정대제고절연자가고성유중요적의의。기우오예조습상태절연자주위전장적전조성특점,채용리산전조모형연구료축향불균균적오층대절연자전장화전위분포적영향。계산결과표명：절연자표면전장강도절향분량여절연자표면오예축향분포불균균정도유관;류과오층적설루전류적초이열효응회가극절연자표면전도솔적불균균정도。
It is meaningful for the improvement of insulator reliability to research the surface electric field characteristics in a condition of dirt and moisture.Based on the resistance characterisc of the insulator field in the condition,this paper adopts the discrete resistor model to study the influence of nonuniform pollution layer along the insulator’s axis on the distributions of insulator’s electric field and potential.The results show that the tangential component of the insulator’s surface electric field intensty depends on the nonuniform,and the nonuniform of insulator’s surface conductivity becomes worse by Joule heat effect of the leakage current through pollution layer.