电网技术2017，Vol.41Issue(5)：1683-1688,6.DOI:10.13335/j.1000-3673.pst.2016.2263
油浸纸套管电容芯子极板边缘电场分布的仿真及优化方法
Electric Field Simulation and Optimization Methods of Capacitor Core Foil Edge of Oil-Impregnated Paper Bushing
摘要
Abstract
Marginal effect of electric field exists throughout all condenser type bushings on any voltage levels.Electric field of foil edge may be distorted to form local strong electric field,causing discharges and threatening safe operation of bushing.Currently,radical and axial electric field is calculated with traditional method,ignoring maximum electric field at capacitor core foil edge (CCFE) of bushing,lacking control measures of its electric field.In this paper,electric distribution of oil-impregnated paper bushing is calculated with Infolytica FEM software,considering CCFE thickness and micro-shape in three cases:no special treatment,single edge fold and laying semiconducting paper.Result shows that maximum CCFE electric field without special treatment is far bigger than that in middle uniform field.CCFE electric field controlled with single edge folding and laying semiconducting paper decreases by 19％ and 33％ respectively.It is suggested that CCFE electric field is optimized with 10 mm～20 mm single edge folding or laying semiconducting paper based on uniform distribution of electric field without increasing core size to improve operational performance of condenser type bushings.关键词
油浸纸套管/电容芯子/边缘效应/电场计算/优化方法Key words
oil-impregnated paper bushing/capacitor core/marginal effect/electric field calculation/optimization methods分类
信息技术与安全科学引用本文复制引用
戴佺民,齐波,卓然,李成榕,田野,傅明利..油浸纸套管电容芯子极板边缘电场分布的仿真及优化方法[J].电网技术,2017,41(5):1683-1688,6.基金项目
国家高技术研究发展计划(863计划)(2015AA050204) （863计划）
中央高校基本科研业务费专项资金资助(2016XS03) （2016XS03）
中国南方电网公司2014年科技项目(K-KY2014-002).Project Supported by National High Technology Research and Development Program of China (863 Program)(2015AA050204) （K-KY2014-002）
Fundamental Research Funds for the Central Universities(2016XS03) （2016XS03）
China Southern Power Grid Research Program (K-KY2014-002). （K-KY2014-002）
