110kV复合绝缘子棒形并联间隙工频电弧疏导过程的试验研究  

Experimental Research on Power Frequency Arc Movement Process of 110 kV Composite Insulators in Rod Shape Parallel Gap Lightning Protection Devices

作　　者：司马文霞[1] 张智[1] 杨庆[1] 袁涛[1] 叶轩[1] 廖永力 罗兵 李锐海 

机构地区：[1]输配电装备及系统安全与新技术国家重点实验室(重庆大学),重庆市沙坪坝区400044 [2]南方电网技术研究中心,广东省广州市510623

出　　处：《中国电机工程学报》2012年第31期114-121,226,共8页Proceedings of the CSEE

基　　金：国家重点基础研究发展计划项目(973项目)(2009CB724504);重庆市科委自然科学基金计划面上项目(CSTC2011BB6065)~~

摘　　要：绝缘子串加装并联间隙装置后,可以疏导工频续流从而保护绝缘子。并联间隙的导弧性能对于绝缘子串的保护至关重要,因而深入了解电弧在间隙电极上的疏导过程及电弧运动特性非常必要。基于此,该文开展了短路电流大小为500A和15.75kA的燃弧试验研究。试验中使用高速摄像仪记录下了电弧运动过程,通过观察试验拍摄的图片分析了电弧的运动特性。利用之前研究建立的长间隙交流电弧模型,仿真计算了与试验电流大小相同的电弧运动过程。通过对比仿真结果和试验结果可知,对于弧根的运动情况,二者基本一致。虽然在弧柱的运动形态上稍有差异,但弧柱的运动滞后于弧根的情况是一致的。因此,电弧运动仿真模型的精确性较高,可用于分析并联间隙装置的导弧效果。Connected to both ends of the insulator sting, the parallel gap lightning protection device （PGLPD） can divert the power frequency following current. The arc-guiding performance of the PGLPD is critically important for the protection of the insulator strings. It is necessary to understand the arc movement characteristic and process on the metallic electrode. For this reason, the arc-burning experiments with 500A and 15.75kA short-circuit current were carried out. The arc movement process was recorded by high-speed video camera and then the arc movement characteristic was analyzed. Furthermore, based on the long AC arc movement model, the arc movement process was simulated. By comparing the simulation and the experimental results, it is found that the resultant movement of the arc root is agreed with each other. Although the arc column movement patterns have a little difference between simulation and experiment, the situation that the arc column movement lags behind the arc root is consistent. So, it shows that the simulation results of arc movement have proper accuracy, and can be used to analyze the arc-guiding effect of the PGLPD.

关 键 词：并联间隙装置 绝缘子串 燃弧试验 电弧运动 运动仿真 

分 类 号：TM85[电气工程—高电压与绝缘技术]