基于“日盲”紫外脉冲的变电站绝缘子劣化程度检测研究
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摘要
户外工况下的绝缘子由于环境因素的作用导致性能劣化,当劣化到一定程度时,绝缘性能就会降低,需要对绝缘子的运行状况进行检测。设计一种基于"日盲"紫外脉冲检测的变电站绝缘子劣化程度远距离检测装置,并提出运用非线性回归方法寻找绝缘子劣化程度与距离、紫外脉冲数、环境湿度间的关系式,将绝缘子劣化程度以百分数的形式表示并划分等级,使得检测结果清晰直观。测试结果证明,该系统能够判断绝缘子的劣化程度,推导的劣化程度数学关系式能作为绝缘子劣化程度判断的准确依据。此研究结果可为在线评估变电站绝缘子劣化程度提供方法和思路。
Due to environmental factors,the performance of insulators under outdoor conditions deteriorates,and when the deterioration reaches to a certain point,the insulation performance will be degraded and then the operation status of insulators should be checked.In this paper,we design a faulty detecting device based on "Solar Blind" UV pulse detection for transformer substation insulators and put forward a multivariate nonlinear regression analysis method to find the mathematical expression between degree of faulty insulators and distance,UV pulse and environment humidity.Through establishment of the test model for faulty insulators,we rank the level of faulty insulators in the form of a percentage,which makes the test result clear and direct.Experiment results show that this mathematical expression can be a criterion for judgment of faulty insulators.The result can provide research methods and ideas for real-time condition monitoring of the transformer substation insulators.
Due to environmental factors,the performance of insulators under outdoor conditions deteriorates,and when the deterioration reaches to a certain point,the insulation performance will be degraded and then the operation status of insulators should be checked.In this paper,we design a faulty detecting device based on "Solar Blind" UV pulse detection for transformer substation insulators and put forward a multivariate nonlinear regression analysis method to find the mathematical expression between degree of faulty insulators and distance,UV pulse and environment humidity.Through establishment of the test model for faulty insulators,we rank the level of faulty insulators in the form of a percentage,which makes the test result clear and direct.Experiment results show that this mathematical expression can be a criterion for judgment of faulty insulators.The result can provide research methods and ideas for real-time condition monitoring of the transformer substation insulators.
引文
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[12]凌忠兴.嵌入式系统中数字滤波的算法及软件流程[J].电测与仪表,2007,44(1):58-61.LING Zhongxing.Digital filtering algorithm and software flow in embedded system[J].Electrical Measurement&Instrumentation,2007,44(1):58-61.
[13]何为,陈涛,刘晓明,等.基于紫外脉冲法的非接触式低值(零值)绝缘子在线监测系统[J].电力系统自动化,2006,30(10):69-74.HE Wei,CHEN Tao,LIU Xiaoming,el al.On-line monitoring system of faulty insulator based on non-touching UV pulse method[J].Automation of Electric Power Systems,2006,30(10):69-74.
[14]徐群.非线性回归分析的方法研究[D].合肥:合肥工业大学,2009.
[2]高瑾.基于紫外线检测技术的绝缘子放电检测设备研究[D].保定:华北电力大学,2013.
[3]周斌,齐世飞,牛磊,等.紫外成像仪在750 k V输变电系统中的应用[J].电网与清洁能源,2009,25(2):32-35.ZHOU Bin,QI Shifei,NIU Lei,el al.The application of ultraviolet photo imaging instrument in 750 k V transmission and transformation system[J].Power System and Clean Energy,2009,25(2):32-35.
[4]汪金刚,林伟,彭鹄,等.高压放电紫外传感器与检测装置研究[J].传感器与微系统,2010,29(8):56-59.WANG Jingang,LIN Wei,PENG Hu,el al.Study on ultraviolet sensor and detection to high voltage discharge[J].Transducer and Microsystem Technologies,2010,29(8):56-59.
[5]林瑞聪,缪希仁,郭谋发,等.基于紫外成像技术的劣化绝缘子放电动态特性分析[J].绝缘材料,2014(5):87-91.LIN Ruicong,MIU Xiren,GUO Moufa,el al.Analysis on discharge dynamic characteristics of faulty insulator based on UV imaging technology[J].Insulating Materials,2014,(5):87-91.
[6]周曙琛,刘西中,朱勇,等.电站设备外绝缘全复合化趋势[J].电网与清洁能源,2013,29(8):54-62.ZHOU Shuchen,LIU Xizhong,ZHU Yong,el al.Fully composite tendency of external insulation for power station equipment[J].Power System and Clean Energy,2013,29(8):54-62.
[7]李波,黄嫄.国内外绝缘子在线检测方法的研究[J].电气技术,2011(9):1-5.LI Bo,HUANG Yuan.Study on the on-line monitoring method of insulator in the world[J].Electrical Engineering,2011(9):1-5.
[8]刘士波.劣化绝缘子紫外脉冲检测法研究[D].成都:电子科技大学,2016.
[9]熊兰,刘钰,何友忠,等.绝缘子污秽状态紫外在线监测研究[J].电工电能新技术,2011,30(1):79-83.XIONG Lan,LIU Yu,HE Youzhong,el al.Study of ultraviolet online monitoring system for contaminant level of insulators[J].Advanced Technology of Electrical Engineering and Energy,2011,30(1):79-83.
[10]卢明,姚德贵,张国民,等.劣化绝缘子检测方法的对比分析[J].电瓷避雷器,2006(5):9-13.LU Ming,YAO Degui,ZHANG Guomin,el al.Study on methods of detection of faulty insulators[J].Insulators and Surge Arresters,2006(5):9-13.
[11]劣化盘形悬式绝缘子检测规程:DL/T 626-2005[S].北京:中国电力出版社,2005.
[12]凌忠兴.嵌入式系统中数字滤波的算法及软件流程[J].电测与仪表,2007,44(1):58-61.LING Zhongxing.Digital filtering algorithm and software flow in embedded system[J].Electrical Measurement&Instrumentation,2007,44(1):58-61.
[13]何为,陈涛,刘晓明,等.基于紫外脉冲法的非接触式低值(零值)绝缘子在线监测系统[J].电力系统自动化,2006,30(10):69-74.HE Wei,CHEN Tao,LIU Xiaoming,el al.On-line monitoring system of faulty insulator based on non-touching UV pulse method[J].Automation of Electric Power Systems,2006,30(10):69-74.
[14]徐群.非线性回归分析的方法研究[D].合肥:合肥工业大学,2009.