10 kV支柱瓷绝缘子釉面耐电蚀损试验研究Experimental Study on Electro-Corrosion Resistance of Glazed Surface of 10 kV Pillar Porcelain Insulator
闫康,郑战强
YAN Kang,ZHENG Zhanqiang
摘要(Abstract):
为了研究严酷环境下支柱瓷绝缘子釉面耐电蚀损情况,在实验室内模拟现场恶劣环境,采用交流斜面法对支柱绝缘子进行了耐电蚀损试验。试验持续了700 h,分析了不同时刻电极的放电情况,并对电蚀一定时间后的绝缘子进行泄漏电流试验、工频湿闪络电压试验、工频干闪络电压试验。结果表明,经过长时间的电蚀后,试品绝缘子表面釉层发生了化学变化,釉层碳化严重,出现了鼓包和微裂纹;绝缘子内部形成了断续的闪络通道,造成绝缘子工频干闪络、湿闪络电压等电气性能明显降低。
In order to research the electro-corrosion resistance of the pillar porcelain insulator glazed surface under severe environment, the AC inclined surface method is used to test the electro-corrosion of pillar porcelain insulator in the simulated harsh environment in the laboratory. The test voltage is constant leakage tracking voltage method. The test has been lasted for 700 hours, recording the discharge of electrodes at different times, taking pictures of discharge and infrared temperature measurement, and conducting leakage current test, power frequency wet flashover voltage test and power frequency dry flashover voltage test on insulators corroded for a certain time. The research shows that after a long period of electrical corrosion, the glaze layer on the surface of the test insulator has chemical changes, the glaze layer is severely carbonized, and bulges and microcracks have appeared. Intermittent flashover channels are formed inside the insulators,resulting in dry flashes at power frequency. Electrical properties such as network and wet flashover voltage are significantly reduced.
关键词(KeyWords):
支柱瓷绝缘子;电蚀损;交流斜面法;泄漏电流;工频干闪络;工频湿闪络
pillar porcelain insulator;electro-corrosion resistance;AC inclined surface method;leakage current;power frequency dry flashover test;power frequency wet flashover test
基金项目(Foundation):
作者(Author):
闫康,郑战强
YAN Kang,ZHENG Zhanqiang
参考文献(References):
- [1]吴泽华,王浩然,田汇冬,等.特高压GIL三支柱绝缘子结构参数分析与优化[J].高电压技术,2018,44(10):3165-3173.
- [2]胡建林,杨洪椿,石璧,等.110 k V染污支柱绝缘子人工覆雪耐压试验研究[J].高电压技术,2018,44(9):2792-2798.
- [3]汪佛池,马建桥,律方成,等.污秽和水分对瓷支柱绝缘子发热的影响[J].高电压技术,2018,44(9):3054-3060.
- [4]张轩,郑欣,刘荣海,等.基于统计分析支柱绝缘子振动声学检测[J].云南电力技术,2016,44(5):112-114.
- [5]关志成.绝缘子及输变电设备外绝缘[M].北京:清华大学出版社,2006.
- [6]王培铭.无机非金属材料学[M].上海:同济大学出版社,1999.
- [7]全国电气绝缘磁料与绝缘系统评定标准化技术委员会.严酷环境条件下使用的电气绝缘材料评定耐电痕化和蚀损的试验方法:GB/T 6553—2014[S].北京:中国标准出版社,2014.
- [8]吴雪梅.材料物理性能与监测[M].北京:科学出版社,2012.
- [9]吴起胜,蔡安兰,杨亚群.材料物理性能[M].上海:华东理工大学出版社,2006.
- [10]关振铎,张中太,焦金生,等.无机材料物理性能[M].北京:清华大学出版社,2011:71-74.
- [11]李圣,程永锋,卢智成,等.支柱绝缘子互连体系地震易损性分析[J].中国电力,2016,49(4):61-66.
- [12]孙庆峰,柳青山,骆宗义,等.高压支柱瓷绝缘子小角度纵波探伤缺陷案例分析[J].浙江电力,2018,37(9):28-30.
- [13]张柳,巢亚锋,黄福勇,等.布置方式对染污绝缘子污闪电压影响综述[J].中国电力,2016,49(6):95-100.
- [14]侯宇嘉,杨文良,王琼,等.高压支柱瓷绝缘子断裂原因及缺陷检测技术分析[J].内蒙古电力技术,2019,37(1):71-74.
- [15]邱志斌,阮江军,黄道春,李晓彬.一种瓷绝缘子釉面电蚀加速老化试验的新方法[J].中国电机工程学报,2015,35(18):4825-4832.
- [16]陈平,朱振峰,陈月娥,等.瓷绝缘子棕红釉黑色网状缺陷形成机理探讨[J].电瓷避雷器,2001(5):3-8.
- [17]夏云峰,宋新明,何建宗,等.复合绝缘子用硅橡胶老化状态评估方法[J].电工技术学报,2019,34(增刊1):440-448.