基于数据挖掘的CVT电容元件击穿故障分析
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摘要
本文介绍了基于数据挖掘技术的电容式电压互感器(CVT)准实时在线监测系统构架,改系统中海量的CVT二次电压数据利用数据挖掘技术可以实现电容元件击穿的准实时监测,相比传统停电预防性试验更能够及时的发现潜在缺陷,在理论上对利用二次电压变化用于CVT电容元件击穿故障判别进行了分析,并通过一起典型案例的剖析验证了该方法的有效性,最后对CVT绝缘监督提出了建议。
In this paper,the framework of system for CVT based on data mining technology is introduced.According to the secondary voltage data of CVT in the system,quasi real time on-line monitoring of capacitor breakdown can be achieved by the use of data mining technology which,compared to the traditional power off preventative test can find timely potential defect. The breakdown of CVT capacitance elements by using voltage variations is analyzed in theory. The effectiveness of the method is proved through an analysis of a typical case.Finally,two suggestions for CVT insulation monitoring are proposed.
In this paper,the framework of system for CVT based on data mining technology is introduced.According to the secondary voltage data of CVT in the system,quasi real time on-line monitoring of capacitor breakdown can be achieved by the use of data mining technology which,compared to the traditional power off preventative test can find timely potential defect. The breakdown of CVT capacitance elements by using voltage variations is analyzed in theory. The effectiveness of the method is proved through an analysis of a typical case.Finally,two suggestions for CVT insulation monitoring are proposed.
引文
[1]周泽存,沈其工,方瑜.高电压技术[M].北京:中国电力出版社,2004.
[2]陈化钢.电气设备预防性试验方法[M].北京:水利电力出版社,1994.
[3]范淑霞.电容式电压互感器二次电压异常分析及处理[J].河北电力技术,2011,30(3):26-30.FAN Shuxia.Analysis and settlement on abnormal secondary voltage of capacitor voltage transformers[J].Hebei Electric Power,2011,30(3):26-30.
[4]刘胜军,王慷,郭猛.电容式电压互感器二次电压偏高分析[J].变压器,2010(4):66-68.LIU Shengjun,WANG Kang,GUO Meng.Analysis of higher secondary voltage fault of capacitor voltage transformer[J].Transformer,2010(4):66-68.
[5]潘炜,朱悌烽.高分压比CVT电容量及介损现场测量实例[J].高电压技术,2005,31(9):90-91.PAN Wei,ZHU Tifeng.Example of field measurement of capcity and dielectric loss for high ratio CVT[J].High Voltage Engineering,2005,31(9):25-27.
[6]侍海军,汪飞,连振东.电容式电压互感器故障实例及分析[J].江苏电机工程,2009,28(4):14-16.SHI Haijun,WANG Fei,LIAN Zhendong.Example and analysis of malfunction of the capacitive voltage transformer[J].Jiangsu Electrical Engineering,2009,28(4):14-16.
[7]刘宏亮,刘海峰,岳国良,等.电容式电压互感器的运行故障监测[J].电力电容器与无功补偿,2011,32(3):62-65.LIU Hongliang,LIU Haifeng,YUE Guoliang,et al.Operation fault monitoring on capacitive voltage transformer[J].Power Capacitor&Reactive Power Compensation,2011,32(3):62-65.
[8]付炜平,霍春燕.CVT早期故障监测方法[J].电力电容器与无功补偿,2009,30(2):29-31.FU Weiping,HUO Chunyan.EarIier fault monitoring method of CVT[J].Power Capacitor&Reactive Power Compensation,2009,30(2):29-31.
[9]杨洋,许强,覃伟,等.某500 kV CVT的故障原因诊断及分析[J].电力电容器与无功补偿,2011(4):68-71.YANG Yang,XU Qiang,QIN Wei,et al.Diagnosis and analysis of a fault of 500 kV capacitor voltage transformer[J].Power Capacitor&Reactive Power Compensation,2011(4):68-71.
[10]田晓云,朱治海,王亚平.电容式电压互感器二次电压偏高的原因分析[J].内蒙古电力技术,2009,27(5):47-49.TIAN Xiaoyun,ZHU Zhihai,WANG Yaping.Cause analysis on higher secondary voltage of capacitor voltage transformer[J].Inner Mongolia Electric Power,2009,27(5):47-49.
[11]王晓辉,赵卫华.500 kV电容式电压互感器二次电压异常状况的分析与处理[J].上海电力学院学报,2009(1):10-12.WANG Xiaohui,ZHAO Weihua.The analysis and disposal of 500 kV capacitor voltage transformers secondary voltage abnormality condition[J].Journal of Shanghai University of Electric Power,2009(1):10-12.
[12]丁涛,陈卓娅,刘忠,等.一起500 kV电容式电压互感器电压异常的分析处理[J].电力电容器与无功补偿,2010,31(2):52-55.DING Tao,CHEN Zhuoya,LIU Zhong,et al.Analysis and treatment of voltage abnormality in a 500 kV capacitor voltage transformer[J].Power Capacitor&Reactive Power Compensation,2010,31(2):52-55.
[13]乔立凤,高敬更,温定筠,等.电容式电压互感器二次电压异常分析处理[J].电子测量技术,2013,36(2):116-118.QIAO Lifeng,GAO Jinggeng,WEN Dingjun,et al.Analysis and treatment on abnormal secondary voltage of capacitor voltage transformer[J].Electronic Measurement Technology,2013,36(2):116-118.
[14]程艳霞,闫尚斌,唐领英.110 k V及以上电容式电压互感器故障典型案例分析[J].电力学报,2013,28(2):131-134.CHENG Yanxia,YAN Shangbin,TANG Lingying.The typical fault analysis of 110 kV and above capacitor voltage transformer[J].Journal of Electric Power,2013,28(2):131-134.
[15]陈润颖,王周祥.电容式电压互感器介损增长异常分析[J].电网与清洁能源,2012,28(4):31-34.CHEN Runying,WANG Zhouxiang.Abnormal growth analysis of dielectric loss factor in capacitor voltage transformer[J].Advances of Power System&Hydroelectric Engineering,2012,28(4):31-34.
[2]陈化钢.电气设备预防性试验方法[M].北京:水利电力出版社,1994.
[3]范淑霞.电容式电压互感器二次电压异常分析及处理[J].河北电力技术,2011,30(3):26-30.FAN Shuxia.Analysis and settlement on abnormal secondary voltage of capacitor voltage transformers[J].Hebei Electric Power,2011,30(3):26-30.
[4]刘胜军,王慷,郭猛.电容式电压互感器二次电压偏高分析[J].变压器,2010(4):66-68.LIU Shengjun,WANG Kang,GUO Meng.Analysis of higher secondary voltage fault of capacitor voltage transformer[J].Transformer,2010(4):66-68.
[5]潘炜,朱悌烽.高分压比CVT电容量及介损现场测量实例[J].高电压技术,2005,31(9):90-91.PAN Wei,ZHU Tifeng.Example of field measurement of capcity and dielectric loss for high ratio CVT[J].High Voltage Engineering,2005,31(9):25-27.
[6]侍海军,汪飞,连振东.电容式电压互感器故障实例及分析[J].江苏电机工程,2009,28(4):14-16.SHI Haijun,WANG Fei,LIAN Zhendong.Example and analysis of malfunction of the capacitive voltage transformer[J].Jiangsu Electrical Engineering,2009,28(4):14-16.
[7]刘宏亮,刘海峰,岳国良,等.电容式电压互感器的运行故障监测[J].电力电容器与无功补偿,2011,32(3):62-65.LIU Hongliang,LIU Haifeng,YUE Guoliang,et al.Operation fault monitoring on capacitive voltage transformer[J].Power Capacitor&Reactive Power Compensation,2011,32(3):62-65.
[8]付炜平,霍春燕.CVT早期故障监测方法[J].电力电容器与无功补偿,2009,30(2):29-31.FU Weiping,HUO Chunyan.EarIier fault monitoring method of CVT[J].Power Capacitor&Reactive Power Compensation,2009,30(2):29-31.
[9]杨洋,许强,覃伟,等.某500 kV CVT的故障原因诊断及分析[J].电力电容器与无功补偿,2011(4):68-71.YANG Yang,XU Qiang,QIN Wei,et al.Diagnosis and analysis of a fault of 500 kV capacitor voltage transformer[J].Power Capacitor&Reactive Power Compensation,2011(4):68-71.
[10]田晓云,朱治海,王亚平.电容式电压互感器二次电压偏高的原因分析[J].内蒙古电力技术,2009,27(5):47-49.TIAN Xiaoyun,ZHU Zhihai,WANG Yaping.Cause analysis on higher secondary voltage of capacitor voltage transformer[J].Inner Mongolia Electric Power,2009,27(5):47-49.
[11]王晓辉,赵卫华.500 kV电容式电压互感器二次电压异常状况的分析与处理[J].上海电力学院学报,2009(1):10-12.WANG Xiaohui,ZHAO Weihua.The analysis and disposal of 500 kV capacitor voltage transformers secondary voltage abnormality condition[J].Journal of Shanghai University of Electric Power,2009(1):10-12.
[12]丁涛,陈卓娅,刘忠,等.一起500 kV电容式电压互感器电压异常的分析处理[J].电力电容器与无功补偿,2010,31(2):52-55.DING Tao,CHEN Zhuoya,LIU Zhong,et al.Analysis and treatment of voltage abnormality in a 500 kV capacitor voltage transformer[J].Power Capacitor&Reactive Power Compensation,2010,31(2):52-55.
[13]乔立凤,高敬更,温定筠,等.电容式电压互感器二次电压异常分析处理[J].电子测量技术,2013,36(2):116-118.QIAO Lifeng,GAO Jinggeng,WEN Dingjun,et al.Analysis and treatment on abnormal secondary voltage of capacitor voltage transformer[J].Electronic Measurement Technology,2013,36(2):116-118.
[14]程艳霞,闫尚斌,唐领英.110 k V及以上电容式电压互感器故障典型案例分析[J].电力学报,2013,28(2):131-134.CHENG Yanxia,YAN Shangbin,TANG Lingying.The typical fault analysis of 110 kV and above capacitor voltage transformer[J].Journal of Electric Power,2013,28(2):131-134.
[15]陈润颖,王周祥.电容式电压互感器介损增长异常分析[J].电网与清洁能源,2012,28(4):31-34.CHEN Runying,WANG Zhouxiang.Abnormal growth analysis of dielectric loss factor in capacitor voltage transformer[J].Advances of Power System&Hydroelectric Engineering,2012,28(4):31-34.