适用于振荡波电缆局放测试的π型检测阻抗设计
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摘要
振荡波电缆局放测试是一种新兴的电缆缺陷检测手段,而采集到的局放信号质量与检测阻抗密切相关。传统RC型检测阻抗无法兼顾检测到局放脉冲的能量以及对低频试验电压的抑制效果。为改善检测阻抗的性能,设计了一种适用于振荡波电缆局放检测的π型检测阻抗。理论分析与试验结果表明:该检测阻抗能够在保证输出脉冲能量较高的同时对低频试验电压有更强的抑制作用,且输入输出具有良好的线性关系;在振荡波电缆局放定位中,应用该检测阻抗能有效检测局放信号及其多次反射波,并能准确定位电缆缺陷。因此,π型检测阻抗在高压长电缆局放测试方面有广阔的应用前景。
Oscillatory wave cable partial discharge(PD) test is a new method for cable defects detecting. The quality of the PD signal collected is closely related to the impedance detection. The traditional RC-type detection impedance cannot take into account the energy of PD pulse detected and its attenuation effect on low frequency test voltage. In order to improve the performance of the detection impedance, a kind of π-type detection impedance for oscillatory wave cable PD test is presented. Theoretical analysis and experimental results show that the π-type detection impedance has a better attenuation effect on low frequency test voltage while keeping a high output pulse energy. In addition, there is a good linear relationship between the input and output signals. In the application of cable PD location under oscillating wave, this detection impedance can be used to detect the PD signal and its reflected waves effectively, and to locate the cable fault accurately. Therefore, the π-type detection impedance has broad application prospects in the PD test for high-voltage and long-distance cables.
Oscillatory wave cable partial discharge(PD) test is a new method for cable defects detecting. The quality of the PD signal collected is closely related to the impedance detection. The traditional RC-type detection impedance cannot take into account the energy of PD pulse detected and its attenuation effect on low frequency test voltage. In order to improve the performance of the detection impedance, a kind of π-type detection impedance for oscillatory wave cable PD test is presented. Theoretical analysis and experimental results show that the π-type detection impedance has a better attenuation effect on low frequency test voltage while keeping a high output pulse energy. In addition, there is a good linear relationship between the input and output signals. In the application of cable PD location under oscillating wave, this detection impedance can be used to detect the PD signal and its reflected waves effectively, and to locate the cable fault accurately. Therefore, the π-type detection impedance has broad application prospects in the PD test for high-voltage and long-distance cables.
引文
[1]GULSKI E,WESTER F J,SMIT J,et al.Advanced partial discharge diagnostic of MV power cable system using oscillating wave test system[J].IEEE Electrical Insulation Magazine,2000,16(2):17-25.
[2]王有元,王亚军,熊俊,等.振荡波电压下10 kV交联聚乙烯电缆中间接头的局部放电特性[J].高电压技术,2015,41(4):1068-1074.WANG Youyuan,WANG Yajun,XIONG Jun,et al.Partial discharge characteristics of 10 kV XLPE cable joints under oscillating voltage[J].High Voltage Engineering,2015,41(4):1068-1074.
[3]孙广慧,庄小亮,牛海清,等.珠三角地区10 kV配电电缆故障统计分析[J].电气应用,2013,32(11):83-85.SUN Guanghui,ZHUANG Xiaoliang,NIU Haiqing,et al.Statistical analysis of 10 kV distribution cable fault in the pearl river delta region[J].Electrotechnical Application,2013,32(11):83-85.
[4]BOGGS S,DENSLEY J.Fundaments of partial discharge in the context of field cable testing[J].IEEE Electrical Insulation Magzine,2000,16(25):51-56.
[5]SCHALK N.On site testing of high voltage systems after laying voltage age test[C]∥IEEE Colloquium on Super Tension(66~500 kV)Polymeric Cables and Their Accessories.London,UK:IEEE,1995:1-11.
[6]BOYEGO K,HYVONEN P,MARTI A,et al.Selectivity of damped ac(DAC)and VLF voltages after laying tests of extruded MV cable systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003,5(10):874-882.
[7]陆国俊,熊俊,王勇,等.振荡波电压法检测10 kV电缆局部放电试验[J].电力自动化设备,2010,30(11):137-140.LU Guojun,XIONG Jun,WANG Yong,et al.Partial discharge test on10 kV cable by oscillating wave voltage[J].Electric Power Automation Equipment,2010,30(11):137-140.
[8]常文治,葛振东,时翔,等.振荡电压下电缆典型缺陷局部放电的统计特征及定位研究[J].电网技术,2013,37(3):746-752.CHANG Wenzhi,GE Zhendong,SHI Xiang,et al.Statistical characteristic and location of partial discharge caused by typical defects in power cable under damped oscillation voltage[J].Power System Technology,2013,37(3):746-752.
[9]WANG Y J,WANG Y Y,WANG C,et al.The partial discharge characteristic of typical XLPE cable insulation defects under damped oscillating voltage[C]∥2014 IEEE Electrical Insulation Conference.Philadelphia,USA:IEEE,2014:290-293.
[10]高树国,刘贺晨,范辉,等.考虑波速特性的小波变换模极大值法的电力电缆局部放电定位研究[J].电网技术,2016,40(7):2244-2250.GAO Shuguo,LIU Hechen,FAN Hui,et al.PD location method of power cable based on wavelet transform modulus maxima considering wave characteristics[J].Power System Technology,2016,40(7):2244-2250.
[11]FRANK J,GULSKI E,JOHAN J S,et al.Experiences from on-site PD measurements using oscillating wave test system[C]∥High Voltage Engineering Symposium.London,UK:IET,1999:420-423.
[12]朱正国,黄超,毛骏,等.10 k V电缆脉冲电流法局部放电检测技术研究[J].华东电力,2014,42(9):1876-1881.ZHU Zhengguo,HUANG Chao,MAO Jun,et al.Partial discharge detection in 10 k V cable based on pulse current method[J].East China Electric Power,2014,42(9):1876-1881.
[13]Partial discharge measurements:IEC 60270[S],2000.
[14]CAVALLINI A,CONTI M,CONTIN A,et al.Advanced PD inference in on-field measurements,part 2:identification of defects in solid insulation systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003,10(3):528-537.
[15]常文治,葛振东,时翔,等.振荡电压下电缆典型缺陷局部放电的统计特征及定位研究[J].电网技术,2013,37(3):746-752.CHANG Wenzhi,GE Zhendong,SHI Xiang,et al.Statistical characteristic and location of partial discharge caused by typical defects in power cable under damped oscillation voltage[J].Power System Technology,2013,37(3):746-752.
[16]ALTENBURGER R,HEITZ C,TIMMER J.Analysis of phased-resolved partial discharge patterns of voids based on a stochastic process approach[J].Journal of Physics D:Applied Physics,2002,35(11):1149-1163.
[17]GULSKI E,KRIVDA A.Neural networks as a tool for recognition of partial discharges[J].IEEE Transactions on Electrical Insulation,1993,28(6):984-1001.
[18]曹承宗.局部放电试验中检测阻抗参数选择方法的探讨[J].高电压技术,1983,1(2):1-12.CAO Chengzong.Discussion on the selection of impedance parameters in partial discharge test[J].High Voltage Engineering,1983,1(2):1-12.
[19]郭琦.电缆振荡波局部放电检测系统的研制[D].上海:上海交通大学,2012.GUO Qi.Development of oscillating wave test system[D].Shanghai,China:Shanghai Jiaotong University,2012.
[20]SCHNETTLER A,KURRAT M.Partial discharge diagnosis using artificial neural network[C]∥The 8th International Symposium on High Voltage Engineering.Yokohama,Japan:IEEE,1993:57-60.
[21]MAUSETH F,TOLLEFSEN H,HVIDSTEN S.Effect of test voltage frequency on PD inception in service aged cable joints[C]∥2014 International Conference on High Voltage Engineering and Application.Poznan,Poland:IEEE,2014:1-4.
[22]孙志明.10 k V电缆振荡波局部放电检测技术研究及应用[D].北京:华北电力大学,2012.SUN Zhiming.Study and application about 10 kV cable PD OWTS[D].Beijing,China:North China Electric Power University,2012.
[23]EMERALDI P,KHAYAM U.Design of matching impedance for ultra wideband partial discharge detection[C]∥2013 International Conference on Information Technology and Electrical Engineering.Yogyakarta,Indonesia:IEEE,2013:349-354.
[24]GULSKI E,SMIT J J,WESTER F J.PD knowledge rules for insulation condition assessment of distribution power cables[J].IEEETransactions on Dielectrics and Electrical Insulation,2005,12(2):223-239.
[2]王有元,王亚军,熊俊,等.振荡波电压下10 kV交联聚乙烯电缆中间接头的局部放电特性[J].高电压技术,2015,41(4):1068-1074.WANG Youyuan,WANG Yajun,XIONG Jun,et al.Partial discharge characteristics of 10 kV XLPE cable joints under oscillating voltage[J].High Voltage Engineering,2015,41(4):1068-1074.
[3]孙广慧,庄小亮,牛海清,等.珠三角地区10 kV配电电缆故障统计分析[J].电气应用,2013,32(11):83-85.SUN Guanghui,ZHUANG Xiaoliang,NIU Haiqing,et al.Statistical analysis of 10 kV distribution cable fault in the pearl river delta region[J].Electrotechnical Application,2013,32(11):83-85.
[4]BOGGS S,DENSLEY J.Fundaments of partial discharge in the context of field cable testing[J].IEEE Electrical Insulation Magzine,2000,16(25):51-56.
[5]SCHALK N.On site testing of high voltage systems after laying voltage age test[C]∥IEEE Colloquium on Super Tension(66~500 kV)Polymeric Cables and Their Accessories.London,UK:IEEE,1995:1-11.
[6]BOYEGO K,HYVONEN P,MARTI A,et al.Selectivity of damped ac(DAC)and VLF voltages after laying tests of extruded MV cable systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003,5(10):874-882.
[7]陆国俊,熊俊,王勇,等.振荡波电压法检测10 kV电缆局部放电试验[J].电力自动化设备,2010,30(11):137-140.LU Guojun,XIONG Jun,WANG Yong,et al.Partial discharge test on10 kV cable by oscillating wave voltage[J].Electric Power Automation Equipment,2010,30(11):137-140.
[8]常文治,葛振东,时翔,等.振荡电压下电缆典型缺陷局部放电的统计特征及定位研究[J].电网技术,2013,37(3):746-752.CHANG Wenzhi,GE Zhendong,SHI Xiang,et al.Statistical characteristic and location of partial discharge caused by typical defects in power cable under damped oscillation voltage[J].Power System Technology,2013,37(3):746-752.
[9]WANG Y J,WANG Y Y,WANG C,et al.The partial discharge characteristic of typical XLPE cable insulation defects under damped oscillating voltage[C]∥2014 IEEE Electrical Insulation Conference.Philadelphia,USA:IEEE,2014:290-293.
[10]高树国,刘贺晨,范辉,等.考虑波速特性的小波变换模极大值法的电力电缆局部放电定位研究[J].电网技术,2016,40(7):2244-2250.GAO Shuguo,LIU Hechen,FAN Hui,et al.PD location method of power cable based on wavelet transform modulus maxima considering wave characteristics[J].Power System Technology,2016,40(7):2244-2250.
[11]FRANK J,GULSKI E,JOHAN J S,et al.Experiences from on-site PD measurements using oscillating wave test system[C]∥High Voltage Engineering Symposium.London,UK:IET,1999:420-423.
[12]朱正国,黄超,毛骏,等.10 k V电缆脉冲电流法局部放电检测技术研究[J].华东电力,2014,42(9):1876-1881.ZHU Zhengguo,HUANG Chao,MAO Jun,et al.Partial discharge detection in 10 k V cable based on pulse current method[J].East China Electric Power,2014,42(9):1876-1881.
[13]Partial discharge measurements:IEC 60270[S],2000.
[14]CAVALLINI A,CONTI M,CONTIN A,et al.Advanced PD inference in on-field measurements,part 2:identification of defects in solid insulation systems[J].IEEE Transactions on Dielectrics and Electrical Insulation,2003,10(3):528-537.
[15]常文治,葛振东,时翔,等.振荡电压下电缆典型缺陷局部放电的统计特征及定位研究[J].电网技术,2013,37(3):746-752.CHANG Wenzhi,GE Zhendong,SHI Xiang,et al.Statistical characteristic and location of partial discharge caused by typical defects in power cable under damped oscillation voltage[J].Power System Technology,2013,37(3):746-752.
[16]ALTENBURGER R,HEITZ C,TIMMER J.Analysis of phased-resolved partial discharge patterns of voids based on a stochastic process approach[J].Journal of Physics D:Applied Physics,2002,35(11):1149-1163.
[17]GULSKI E,KRIVDA A.Neural networks as a tool for recognition of partial discharges[J].IEEE Transactions on Electrical Insulation,1993,28(6):984-1001.
[18]曹承宗.局部放电试验中检测阻抗参数选择方法的探讨[J].高电压技术,1983,1(2):1-12.CAO Chengzong.Discussion on the selection of impedance parameters in partial discharge test[J].High Voltage Engineering,1983,1(2):1-12.
[19]郭琦.电缆振荡波局部放电检测系统的研制[D].上海:上海交通大学,2012.GUO Qi.Development of oscillating wave test system[D].Shanghai,China:Shanghai Jiaotong University,2012.
[20]SCHNETTLER A,KURRAT M.Partial discharge diagnosis using artificial neural network[C]∥The 8th International Symposium on High Voltage Engineering.Yokohama,Japan:IEEE,1993:57-60.
[21]MAUSETH F,TOLLEFSEN H,HVIDSTEN S.Effect of test voltage frequency on PD inception in service aged cable joints[C]∥2014 International Conference on High Voltage Engineering and Application.Poznan,Poland:IEEE,2014:1-4.
[22]孙志明.10 k V电缆振荡波局部放电检测技术研究及应用[D].北京:华北电力大学,2012.SUN Zhiming.Study and application about 10 kV cable PD OWTS[D].Beijing,China:North China Electric Power University,2012.
[23]EMERALDI P,KHAYAM U.Design of matching impedance for ultra wideband partial discharge detection[C]∥2013 International Conference on Information Technology and Electrical Engineering.Yogyakarta,Indonesia:IEEE,2013:349-354.
[24]GULSKI E,SMIT J J,WESTER F J.PD knowledge rules for insulation condition assessment of distribution power cables[J].IEEETransactions on Dielectrics and Electrical Insulation,2005,12(2):223-239.