电网技术2018，Vol.42Issue(6)：2001-2008,8.DOI:10.13335/j.1000-3673.pst.2017.2322
一种10 kV配电线路防雷复合绝缘子的绝缘设计及防雷性能
Study on Insulation Design and Lightning Protection Performance of Lightning Protection Composite Insulators for 10kV Distribution Line
摘要
Abstract
In this paper, lightning protection composite insulators combining surge arresters and insulators are developed. Insulation design and lightning protection performance of the composite insulators is analyzed through experiment and simulation. Results indicate that corresponding air gap decreases with diameter increase of discharge ball under 100kV positive lightning impulse. In wet withstand test of 26kV at power frequency, relationship between breakdown voltage of air gap and diameter of the discharge ball presents"U" type curve distribution. As length of supporting item increases, impulse breakdown voltage of the insulation inside the supporting item presents a rising trend under positive lightning impulse voltage. Based on test results and analysis, insulation parameters of the insulator are optimized. Insulation and mechanical performance of the insulator meet requirements of national standard. Lightning protection performance is analyzed with EMTP-PSCAD and finite difference time domain. Analytical results indicate that lightning protection composite insulator could meet requirements of national standard and operation conditions. According to numerical calculation and simulation analysis, for the lightning protection composite insulators having passed 65kA and 4/10μs tests designed in this paper, maximum values of direct and induced lightning withstand voltages (lightning is 65m apart from the tower) are -35kA and -147kA respectively.关键词
配电线路/防雷复合绝缘子/绝缘设计/雷电冲击/电磁暂态/吸收能量/残压Key words
distribution line/lightning protection composite insulator/insulation design/lightning impulse/electromagnetic transient/energy/residual voltage分类
信息技术与安全科学引用本文复制引用
王博闻,陆佳政,方针,蒋正龙,彭永晶,胡建平,吴伟..一种10 kV配电线路防雷复合绝缘子的绝缘设计及防雷性能[J].电网技术,2018,42(6):2001-2008,8.基金项目
国家电网公司科技项目(5216AF160005).Project Supported by Science and Technology Project of State Grid Corporation of China (5216AF160005). （5216AF160005）
