摘要
设计有效的方法来准确检测出绝缘子串中是否存在或者哪一片是失效绝缘子,对高压输电线路的安全运行具有重要意义。文章基于ANSYS有限元软件,建立1 000 kV特高压输电线路复合绝缘子串的二维轴对称模型,分别计算并绘制了无失效绝缘子和有失效绝缘子时的复合绝缘子串沿面电压分布和电场强度分布曲线,具体分析了存在失效绝缘子时的沿面电压分布和电场强度分布特性。计算结果表明,当复合绝缘子串存在失效绝缘子时,其沿面电压分布曲线会出现"停留平台",而电场强度分布曲线会出现"畸变"。
It is very important for the safe operation of the high voltage transmission lines to design effective methods to detect the existence or the failure of the insulator strings.Based on the finite element analysis software ANSYS,the establishment of 1 000 kV UHV transmission line composite insulators on the two-dimensional axisymmetric model,were calculated and the mapping of the no failure of insulators and failure of insulators composite insulator string along the surface potential distribution and electric field intensity distribution curve,analysis the existing insulation failure of midnight along the surface potential distribution and electric field intensity distribution characteristics.Calculation results show that,when the composite insulators on failure of insulators,the along the surface voltage distribution curve will appear'stay platform',and electric field intensity distribution curve will appear'distortion'.
出处
《通信电源技术》
2016年第3期33-35,共3页
Telecom Power Technology
