棒形悬式复合绝缘子陡波试验影响因素研究
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摘要
为研究试验回路参数、陡波波形对棒形悬式复合绝缘子陡波试验的影响,利用一支110kV棒形悬式复合绝缘子,在不同冲击电压发生器充电电压、不同陡化球隙距离下开展了陡波试验,对不同回路参数下的陡波电压幅值、陡波电压陡度进行了分析,根据试验中出现的陡波波形特点,对不同类型陡波波形的有效性进行了讨论。研究结果表明,棒形悬式复合绝缘子陡波试验中陡波电压陡度、陡波电压幅值随冲击电压发生器每级充电电压的升高而上升,陡波电压陡度随陡化球隙距离增加呈现先增加后减小的趋势。陡波波形峰值附近的震荡会造成陡度的大幅变化,建议考虑波形第一个峰值及以此峰值计算获得的陡度来判断形有效性。
In order to research the influences of test circuit perimeters and the voltage waveform on composite rod insulators steep front impulse test,tests were carried out on a 110kV composite rod insulator with different generator charging voltage and different steepening sphere distance. The peak value and steepness of voltage were analyzed. According to the waveform characteristics in the tests,the test effectiveness was discussed. It was indicated that the peak value and steepness of voltage would rise with the increasing of the generator charging voltage. The voltage steepness would increase first,then decrease with the longing of the steepening sphere distance. The shock near the peak of the voltage could induce apparent change of the steepness,it is advised that the first peak of the voltage waveform could be used to judge the effectiveness of the test.
In order to research the influences of test circuit perimeters and the voltage waveform on composite rod insulators steep front impulse test,tests were carried out on a 110kV composite rod insulator with different generator charging voltage and different steepening sphere distance. The peak value and steepness of voltage were analyzed. According to the waveform characteristics in the tests,the test effectiveness was discussed. It was indicated that the peak value and steepness of voltage would rise with the increasing of the generator charging voltage. The voltage steepness would increase first,then decrease with the longing of the steepening sphere distance. The shock near the peak of the voltage could induce apparent change of the steepness,it is advised that the first peak of the voltage waveform could be used to judge the effectiveness of the test.
引文
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[14]赵华忠,袁超,颜才升,等.±800 k V特高压直流耐张串复合绝缘子运行性能研究[J].电瓷避雷器,2013,55(6):15-19.ZHAO Huazhong,YUAN Chao,YAN Caisheng,et al.Analysis of operating performance of composite insulators in 800 k V UHV DC tension strings[J]. Insulators and Surge Arresters,2013,55(6):15-19.
[2]赵庆州.复合绝缘子断裂机理分析及建议[J].广西电力,2014,39(3):77-81.ZHAO Qingzhou. The fracture mechanism of composite insulator and its countermeasures[J]. Guangxi Electric Power,2014,39(3):77-81.
[3]邵颖彪,卢明,马德英,等.河南电网一起500 k V复合绝缘子断裂故障分析[J].电瓷避雷器,2016(1):34-39.SHAO Yingbiao,LU Ming,MA Deying,et al. Analysis of a fracture accident of 500 k V composite insulators occurred in Henan grid[J]. Insulators and Surge Arresters,2016(1):34-39.
[4]冉学彬,鲁兹,成立,等. 500 k V复合绝缘子脆断事故研究与劣化机理分析[J].高压电器,2013,49(9):35-43.RAN Xuebin,LU Ci,CHENG Li,et al. Fracture fault analysis and aging mechanism study for 500 k V composite insulator[J]. High Voltage Apparatus,2013,49(9):35-43.
[5]郭巍,黄海鲲,许军,等.基于电磁波频谱的棒形悬式复合绝缘子内部缺陷放电检测方法[J].电瓷避雷器,2015(6):43-49.GUO Wei,HUANG Haikun,XU Jun,et al. A fault detection method of the internal discharge of composite rod insulators based on electromagnetic spectrum[J]. Insulators and Surge Arresters,2015(6):43-49.
[6]闫文斌,王达达,李卫国,等.复合绝缘子陡波击穿原因可视化分析[J].高压电器,2016(8):114-119.YAN Wenbin,WANG Dada,LI Weiguo,et al. Visualization analysis of steep-wave breakdown of composite insulator[J]. High Voltage Apparatus,2016(8):114-119.
[7]李建强,易满成.广州电网复合绝缘子性能老化抽检分析[J].供用电,2011,28(6):74-76.LI Jianqiang,YI Mancheng. Sampling and checking analysis of composite insulator performance in Guangzhou network[J]. Distribution&Utilization,2011,28(6):74-76.
[8]粟福珩,贾逸梅,王青霞,等.陡波试验寻找合成绝缘子内部缺陷有效性的检验[J].电网技术,2003,27(1):41-43.SU Fuhang,JIA Yimei,WANG Qingxia,et al. The effectiveness of the steep front impulse test detecting internal defects of composite insulators[J]. Power System Technology,2003,27(1):41-43.
[9]苏玫.陡波试验在检测复合绝缘子中的作用[J].高电压技术,1997,23(03):70-72.SU Mei. The effect of steep front impulse test detecting composite insulators[J]. High Voltage Engineering,1997,23(03):70-72.
[10]郭清滔,廖福旺,黄海鲲.一起复合绝缘子芯棒脆断原因分析及对策[J].电瓷避雷器,2010,52(1):19-21.GUO Qingtao,LIAO Fuwang,HUANG Haikun. Analysis on cause of core brittle fracture of composite insulators and its preventive measures[J]. Insulators and Surge Arresters,2010,52(1):19-21.
[11]西安电瓷研究所.架空线路绝缘子标称电压高于1000 V交流系统用悬垂和耐张复合绝缘子定义、试验方法及接收准则:GB/T 19519-2014[S].北京:中国电力出版社,2014.
[12]胡文歧,尤鸿芃,刘云蔚,等.盘形悬式绝缘子空气中冲击击穿试验电压峰值的影响因素分析和试验研究[J].电瓷避雷器,2013(4):36-39.HU Wenqi,YOU Hongpeng,LIU Yunwei,et al. Analysis and experimental studies of peak value of puncture impulse voltage in air on cap and pin insulators[J]. Insulators and Surge Arresters,2013(4):36-39.
[13]宿志一.空气中冲击击穿试验在线路绝缘子检测中的应用[J].电网技术,2014,38(7):1798-1805.SU Zhiyi. Impulse puncture tests in air applied in line insulator detecting test[J]. Power System Technology,2014,38(7):1798-1805.
[14]赵华忠,袁超,颜才升,等.±800 k V特高压直流耐张串复合绝缘子运行性能研究[J].电瓷避雷器,2013,55(6):15-19.ZHAO Huazhong,YUAN Chao,YAN Caisheng,et al.Analysis of operating performance of composite insulators in 800 k V UHV DC tension strings[J]. Insulators and Surge Arresters,2013,55(6):15-19.