局部放电偶发脉冲的测量、识别与记录方法
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摘要
近年来的研究表明电力设备中多种缺陷的局部放电都表现为偶发脉冲形式,这使得传统的用于连续脉冲局部放电的检测方法和报警机制不再适用。提出了用于偶发脉冲局部放电检测的脉冲激励测量方法,该方法利用偶发信号占空比低的特性,改变测量设备的数据采集和记录方式,能够有效地实现偶发脉冲的长时间高精度检测。在此基础上,提出了对偶发信号进行高精度空间时差定位和工频相位测量的方法,能够剔除现场环境下的脉冲型干扰,实现放电信号的实时筛选,从而提升监控报警系统的可靠性。
Recent researches indicate that the defective partial discharges( PD) in power equipment manifest low repetition rate,which makes unavailable the traditional measuring methods and alarming mechanism aimed on those continuous PDs. This paper proposes a pulse-exciting method for detecting PDs with low repetition rate. Taking advantage of the low duty ratio of PD signals,this method can conduct high-precision detection to incidental pulses in long duration by changing the data collecting and recording modes. Based on that,this paper proposes a high-precision space TDOA location method for PD signals and a measuring method for power cycle phases. These methods can eliminate the pulse type interference on site and realize the real time selection of PD signals so that the reliability of PD monitoring alarm system improves.
Recent researches indicate that the defective partial discharges( PD) in power equipment manifest low repetition rate,which makes unavailable the traditional measuring methods and alarming mechanism aimed on those continuous PDs. This paper proposes a pulse-exciting method for detecting PDs with low repetition rate. Taking advantage of the low duty ratio of PD signals,this method can conduct high-precision detection to incidental pulses in long duration by changing the data collecting and recording modes. Based on that,this paper proposes a high-precision space TDOA location method for PD signals and a measuring method for power cycle phases. These methods can eliminate the pulse type interference on site and realize the real time selection of PD signals so that the reliability of PD monitoring alarm system improves.
引文
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[5]OKABE S,UETA G,HAMA H,et al.New Aspects of UHF PD Diagnostics in Gas-insulated Systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,2014,21(5):2245-2258.
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[13]葛猛,陶安培.一起SF6封闭式组合电器故障的原因分析[J].高压电器,2008,44(1):95-96.GE M,TAO A P.Analysis of Reason for a GIS Fault[J].High Voltage Apparatus,2008,44(1):95-96.
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[16]陈仓,张杰,赵满江,等.GIS典型绝缘故障案例及原因分析[J].电瓷避雷器,2013,(6):7-10.CHEN C,ZHANG J,ZHAO M J,et al.Analysis of Typical Insulation Fault Cases of GIS[J].Insulators and Surge Arresters,2013,(6):7-10.
[17]CHAN Y,HO K.A Simple and Efficient Estimator for Hyperbolic Location[J].IEEE Transactions on Signal Processing,1994,42(8):1905-1915.
[18]高文胜,丁登伟,刘卫东,等.采用特高频检测技术的局部放电源定位方法[J].高电压技术,2011,35(11):2680-2684.GAO W S,DING D W,LIU W D,et al.Location of PDby Searching in Space Using UHF Method[J].High Voltage Engineering,2011,35(11):2680-2684.
[19]WAGENAARS P,WOUTERS P,WIELEN V,et al.Accurate Estimation of the Time-of-arrival of Partial Discharge Pulses in Cable Systems in Service[J].IEEETransactions on Dielectrics and Electrical Insulation,2008,15(4):1190-1199.
[20]GABOR D.Theory of Communication[J].Journal of IEE-Part III:Radio and Communication Engineering,1946,93(26):429-441.
[2]MORSHUIS P.Degradation of Solid Dielectrics Due to Internal Partial Discharge:Some Thoughts on Progress Made and Where to Go Now[J].IEEE Transactions on Dielectrics and Electrical Insulation,2005,12(5):905-913.
[3]TANAKA T.Internal Partial Discharge and Material Degradation[J].IEEE Transactions on Electrical Insulation,1986,EI-21(6):899-905.
[4]LI C,HU J,LIN C,et al.Fluorine Gas Treatment Improves Surface Degradation Inhibiting Property of Alumina-Filled Epoxy Composite[J].AIP Advances,2016,6(2):025017.
[5]OKABE S,UETA G,HAMA H,et al.New Aspects of UHF PD Diagnostics in Gas-insulated Systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,2014,21(5):2245-2258.
[6]KIM K,KANG D,SEO D,et al.Development of GISCondition Monitoring and Diagnosis System Based on IEC61850[C]//International Conference on Condition Monitoring and Diagnosis(CMD),Bali,Indonesia,2012:396-398.
[7]肖燕,郁惟镛.GIS中局部放电在线监测研究的现状与展望[J].高电压技术,2005,31(1):47-49.XIAO Y,YU W Y.Present Status and Prospect of Research of Online Partial Discharge Monitoring System in GIS[J].High Voltage Engineering,2005,31(1):47-49.
[8]覃剑,王昌长,邵伟民.特高频在电力设备局部放电在线监测中的应用[J].电网技术,1997,21(6):33-36.QIN J,WANG C C,SHAO W M.Applying UHF to Partial Discharge On-Line Monitoring of Electric Power Apparatus[J].Power System Technology,1997,21(6):33-36.
[9]中华人民共和国国家技术监督局.GB/T 7354:局部放电测量[S].北京:中国标准出版社,2004.
[10]International Electrotechnical Commission.IEC-60270:High Voltage Test Techniques-Partial Discharge Measurements[S].Switzerland:IEC Publications,2000.
[11]UETA G,WADA J,OKABE S,et al.Insulation Performance of Three Types of Micro-defects in Inner Epoxy Insulators[J].IEEE Transactions on Dielectrics and Electrical Insulation,2012,19(3):947-954.
[12]GAO W,DING D,LIU W.Research on the Typical Partial Discharge Using the UHF Detection Method for GIS[J].IEEE Transactions on Power Delivery,2011,26(4):2621-2629.
[13]葛猛,陶安培.一起SF6封闭式组合电器故障的原因分析[J].高压电器,2008,44(1):95-96.GE M,TAO A P.Analysis of Reason for a GIS Fault[J].High Voltage Apparatus,2008,44(1):95-96.
[14]何善庆.550kV GIS盆式绝缘子闪络事故的分析[J].高压电器,2003,39(3):79-80.HE S Q.Analysis on the Flashover of Basin-insulator in550 k V GIS[J].High Voltage Apparatus,2003,39(3):79-80.
[15]宋杲,李炜,宋竹生,等.国网公司系统组合电器运行情况分析[J].高压电器,2009,45(6):78-82.SONG G,LI W,SONG Z S,et al.Operation Condition Analysis for GIS in State Grid Corporation of China[J].High Voltage Apparatus,2009,45(6):78-82.
[16]陈仓,张杰,赵满江,等.GIS典型绝缘故障案例及原因分析[J].电瓷避雷器,2013,(6):7-10.CHEN C,ZHANG J,ZHAO M J,et al.Analysis of Typical Insulation Fault Cases of GIS[J].Insulators and Surge Arresters,2013,(6):7-10.
[17]CHAN Y,HO K.A Simple and Efficient Estimator for Hyperbolic Location[J].IEEE Transactions on Signal Processing,1994,42(8):1905-1915.
[18]高文胜,丁登伟,刘卫东,等.采用特高频检测技术的局部放电源定位方法[J].高电压技术,2011,35(11):2680-2684.GAO W S,DING D W,LIU W D,et al.Location of PDby Searching in Space Using UHF Method[J].High Voltage Engineering,2011,35(11):2680-2684.
[19]WAGENAARS P,WOUTERS P,WIELEN V,et al.Accurate Estimation of the Time-of-arrival of Partial Discharge Pulses in Cable Systems in Service[J].IEEETransactions on Dielectrics and Electrical Insulation,2008,15(4):1190-1199.
[20]GABOR D.Theory of Communication[J].Journal of IEE-Part III:Radio and Communication Engineering,1946,93(26):429-441.