电缆接头偏心情况下的表面温度分布及统计特性研究
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摘要
电缆接头偏心导致绝缘性能变差和局部过热,加速绝缘老化和击穿,严重时会造成电缆爆炸。因此,文中提出了一种基于表面温度统计特性的表征电缆接头偏心情况的方法,首先建立了电缆接头的电磁—热多物理场模型,在验证模型准确性的基础上,仿真验证了利用表面温度统计特性表征电缆接头偏心程度的有效性;其次,搭建了电缆接头偏心模拟试验平台,试验分析了不同偏心度下的温度概率密度曲线分布规律。结果表明:利用电缆接头表面温度统计特性能够较好的反映电缆接头偏心情况,且可利用统计参数与电缆偏心程度间的数学关系逆向推知电缆接头偏心度。
The eccentricity of cable joint may cause local overheating and variation of insulation performance, which will accelerate insulation aging, cause insulation breakdown and explosion of the cable in severe case. As a result, this paper puts forward the method to judge the eccentricity of the cable,which is based on the statistical characteristics of surficial temperature. This paper carries out the following work. Firstly, the electromagnetic-thermal field coupling model of cable joint is built. On the basis of verifying the accuracy of the model, the validity of the statistical characteristics of surface temperature to characterize the degree of eccentricity of cable joints is verified by simulation. Secondly, a simulation test platform for cable joint eccentricity is built, and the distribution regulation of temperature probability density curve under different eccentricity is tested and analyzed. The result shows that the statistical characteristics of cable's surficial temperature could reflect the eccentricity of the cable joint well. What's more,through mathematical relationship between the statistical parameter and the degree of cable's eccentricity, we could judge the degree of cable's eccentricity.
The eccentricity of cable joint may cause local overheating and variation of insulation performance, which will accelerate insulation aging, cause insulation breakdown and explosion of the cable in severe case. As a result, this paper puts forward the method to judge the eccentricity of the cable,which is based on the statistical characteristics of surficial temperature. This paper carries out the following work. Firstly, the electromagnetic-thermal field coupling model of cable joint is built. On the basis of verifying the accuracy of the model, the validity of the statistical characteristics of surface temperature to characterize the degree of eccentricity of cable joints is verified by simulation. Secondly, a simulation test platform for cable joint eccentricity is built, and the distribution regulation of temperature probability density curve under different eccentricity is tested and analyzed. The result shows that the statistical characteristics of cable's surficial temperature could reflect the eccentricity of the cable joint well. What's more,through mathematical relationship between the statistical parameter and the degree of cable's eccentricity, we could judge the degree of cable's eccentricity.
引文
[1]高宏.电涡流式电缆偏心在线测量系统研究[D].哈尔滨:哈尔滨理工大学,2003.GAO Hong.Study of the eddy current online measurement system for the cable eccentricity[D].Harbin:Harbin University of Science and Technology,2003.
[2]WEN Jiabin,ZHAO Hong.On line measurement of cable insulation wall thickness and eccentricity using eddy current[J].Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials,2003,2(2):816-819.
[3]FEDOROV M E.Optical laser diffraction transducer for measuring single-wire electric cable eccentricity[D].Tomsk,Russia:National Research Tomsk Polytechnic University,2018:1-10.
[4]南静.基于DSP的电缆偏心检测系统开发与研制[D].天津:河北工业大学,2007.NAN Jing.Research and development on cable eccentricity measurement system based on DSP[D].Tianjing:Hebei University of Technology,2007.
[5]赵振兵,高强,苑津莎,等.一种变电站电气设备温度在线监测新方法[J].高电压技术,2008,34(8):1605-1609.ZHAO Zhenbing,GAO Qiang,YUAN Jinsha,et al.Novel method of temperature on-line monitoring for power equipment in substation[J].High Voltage Engineering,2008,34(8):1605-1609.
[6]赵建华,袁宏永,范维澄,等.基于表面温度场的电缆线芯温度在线诊断研究[J].中国电机工程学报,1999,19(11):53-55.ZHAO Jianhua,YUAN Hongyong,FAN Weicheng,et al.Study temperature field based online diagnoses study for electric cable’s conductor temperature[J].Proceedings of the CSEE,1999,19(11):53-55.
[7]范春利,孙丰瑞,杨立,等.电线电缆破损的定量热像检测与诊断方法研究[J].中国电机工程学报,2005,25(18):162-166.FAN Chunli,SUN Fengrui,YANG Li,et al.Study on quantitative methods of inspection and breakage diagnoses of high voltage line and cable by thermography[J].Proceedings of the CSEE,2005,25(18):162-166.
[8]张建涛.基于红外测温技术的工业热设备内部缺陷诊断访法[D].重庆:重庆大学,2008.ZHANG Jiantao.Diagnosis of defects in the inner wall of heat equipment based in infrared temperature measurement[D].Chongqing:Chongqing University,2008.
[9]张金岗.红外测温技术在氧化锌避雷器带电检测中的应用[J].高压电器,2015,52(6):200-204.ZHANG Jingang.Application of infrared temperature mea surement technology to live detection of zinc oxide arrester[J].High Voltage Apparatus,2015,52(6):200-204.
[10]INOUE N,TSUNEKAGE T,SAKAI S.Fault section detection system for 275 kV XLPE-insulated cables with optical sensing technique[J].IEEE Transactions on Power Delivery,1995,10(3):1148-1155.
[11]ROBINSON A P,LEWIN P L,SUTTON S J,et al.Inspection of high voltage cables using X-ray techniques[J].IEEEInternational Symposium on Electrical Insulation,2004,19(22):372-375.
[12]张施令,彭宗仁,刘鹏,等.电热耦合模型应用于高压干式直流套管径向温度和电场分布计算[J].中国电机工程学报,2013,33(22):191-200.ZHANG Shiling,PENG Zongren,LIU Peng,et al.Electrothermal coupling model for computation of radial temperature and electric field of resin impregnated paper high voltage direct current bushing[J].Proceedings of the CSEE,2013,33(22):191-200.
[13]俞集辉.电磁场原理[M].重庆:重庆大学出版社.2007.YU Jihui.Principle of electromagnetic field[M].Chongqing:Chongqing University Press,2007.
[14]DEL PINO LOPEZ J C,ROMERO P C.Influence of different types of magnetic shields on the thermal behavior and ampacity of underground power cables[J].IEEE Transaction on Power Delivery,2011,26(4):2659-2667.
[15]杨世铭,陶文铨.传热学[M].北京:高等教育出版社,2006.YANG Shiming,TAO Wenshuan.Heat transfer theory[M].Beijing:Higher Education Press,2006.
[16]林抒毅,许志红.交流电磁阀三维温度特性仿真分析[J].中国电机工程学报,2012,32(36):156-164.LIU Shuyi,XU Zhihong.Simulation and analysis on the three-dimensional temperature field of AC solen valves[J].Proceedings of the CSEE,2012,32(36):156-164.
[17]IEC 60287-1 Calculation of the current rating-Part 1:Current rating equations(100%load factor)and calculation of losses:IEC 60287-1:2006[S].2006.
[18]IEC 60287-2 Calculation of the current rating-Part 2:Thermal resistance:IEC 60287-2:2001[S].2001.
[19]IEC 60287-3 Calculation of the current rating-Part 3:Sections on operating conditions:IEC 60287-2:1999[S].1999.
[20]李玲,吴晓文,李洪涛,等.气体绝缘母线热计算及其影响因素分析[J].电工技术学报,2012,27(9):264-270.LI Ling,WU Xiaowen,LI Hongtao,et al.Thermal field calculation and influencing parameters analysis of gas insulated busbars[J].Transactions of China Electrotechnical Society,2012,27(9):264-270.
[21]吴晓文,舒乃秋,李洪涛,等.基于流体多组分传输的气体绝缘母线温度场数值计算与分析[J].中国电机工程学报,2012,32(33):141-147.WU Xiaowen,SHU Naiqiu,LI Hongtao,et al.Thermal field calculation and analysis of gas insulated busbars based on fluid multiple species transport[J].Proceedings of the CSEE,2012,32(33):141-147.
[22]王运生.红外技术诊断电缆头过热缺陷[J].高电压技术,2004(s1):105-106.WANG Yunsheng.Diagnoses of overheat defectiveness of the cable head by infrared technique[J].High Voltage Engineering,2004(s1):105-106.
[23]孙达.基于概率密度的图像处理算法的研究与应用[D].哈尔滨:哈尔滨工业大学,2009.SUN Da.Research on density based image processing algorithms and application[D].Harbin:Harbin Institute of Technology,2009.
[2]WEN Jiabin,ZHAO Hong.On line measurement of cable insulation wall thickness and eccentricity using eddy current[J].Proceedings of the 7th International Conference on Properties and Applications of Dielectric Materials,2003,2(2):816-819.
[3]FEDOROV M E.Optical laser diffraction transducer for measuring single-wire electric cable eccentricity[D].Tomsk,Russia:National Research Tomsk Polytechnic University,2018:1-10.
[4]南静.基于DSP的电缆偏心检测系统开发与研制[D].天津:河北工业大学,2007.NAN Jing.Research and development on cable eccentricity measurement system based on DSP[D].Tianjing:Hebei University of Technology,2007.
[5]赵振兵,高强,苑津莎,等.一种变电站电气设备温度在线监测新方法[J].高电压技术,2008,34(8):1605-1609.ZHAO Zhenbing,GAO Qiang,YUAN Jinsha,et al.Novel method of temperature on-line monitoring for power equipment in substation[J].High Voltage Engineering,2008,34(8):1605-1609.
[6]赵建华,袁宏永,范维澄,等.基于表面温度场的电缆线芯温度在线诊断研究[J].中国电机工程学报,1999,19(11):53-55.ZHAO Jianhua,YUAN Hongyong,FAN Weicheng,et al.Study temperature field based online diagnoses study for electric cable’s conductor temperature[J].Proceedings of the CSEE,1999,19(11):53-55.
[7]范春利,孙丰瑞,杨立,等.电线电缆破损的定量热像检测与诊断方法研究[J].中国电机工程学报,2005,25(18):162-166.FAN Chunli,SUN Fengrui,YANG Li,et al.Study on quantitative methods of inspection and breakage diagnoses of high voltage line and cable by thermography[J].Proceedings of the CSEE,2005,25(18):162-166.
[8]张建涛.基于红外测温技术的工业热设备内部缺陷诊断访法[D].重庆:重庆大学,2008.ZHANG Jiantao.Diagnosis of defects in the inner wall of heat equipment based in infrared temperature measurement[D].Chongqing:Chongqing University,2008.
[9]张金岗.红外测温技术在氧化锌避雷器带电检测中的应用[J].高压电器,2015,52(6):200-204.ZHANG Jingang.Application of infrared temperature mea surement technology to live detection of zinc oxide arrester[J].High Voltage Apparatus,2015,52(6):200-204.
[10]INOUE N,TSUNEKAGE T,SAKAI S.Fault section detection system for 275 kV XLPE-insulated cables with optical sensing technique[J].IEEE Transactions on Power Delivery,1995,10(3):1148-1155.
[11]ROBINSON A P,LEWIN P L,SUTTON S J,et al.Inspection of high voltage cables using X-ray techniques[J].IEEEInternational Symposium on Electrical Insulation,2004,19(22):372-375.
[12]张施令,彭宗仁,刘鹏,等.电热耦合模型应用于高压干式直流套管径向温度和电场分布计算[J].中国电机工程学报,2013,33(22):191-200.ZHANG Shiling,PENG Zongren,LIU Peng,et al.Electrothermal coupling model for computation of radial temperature and electric field of resin impregnated paper high voltage direct current bushing[J].Proceedings of the CSEE,2013,33(22):191-200.
[13]俞集辉.电磁场原理[M].重庆:重庆大学出版社.2007.YU Jihui.Principle of electromagnetic field[M].Chongqing:Chongqing University Press,2007.
[14]DEL PINO LOPEZ J C,ROMERO P C.Influence of different types of magnetic shields on the thermal behavior and ampacity of underground power cables[J].IEEE Transaction on Power Delivery,2011,26(4):2659-2667.
[15]杨世铭,陶文铨.传热学[M].北京:高等教育出版社,2006.YANG Shiming,TAO Wenshuan.Heat transfer theory[M].Beijing:Higher Education Press,2006.
[16]林抒毅,许志红.交流电磁阀三维温度特性仿真分析[J].中国电机工程学报,2012,32(36):156-164.LIU Shuyi,XU Zhihong.Simulation and analysis on the three-dimensional temperature field of AC solen valves[J].Proceedings of the CSEE,2012,32(36):156-164.
[17]IEC 60287-1 Calculation of the current rating-Part 1:Current rating equations(100%load factor)and calculation of losses:IEC 60287-1:2006[S].2006.
[18]IEC 60287-2 Calculation of the current rating-Part 2:Thermal resistance:IEC 60287-2:2001[S].2001.
[19]IEC 60287-3 Calculation of the current rating-Part 3:Sections on operating conditions:IEC 60287-2:1999[S].1999.
[20]李玲,吴晓文,李洪涛,等.气体绝缘母线热计算及其影响因素分析[J].电工技术学报,2012,27(9):264-270.LI Ling,WU Xiaowen,LI Hongtao,et al.Thermal field calculation and influencing parameters analysis of gas insulated busbars[J].Transactions of China Electrotechnical Society,2012,27(9):264-270.
[21]吴晓文,舒乃秋,李洪涛,等.基于流体多组分传输的气体绝缘母线温度场数值计算与分析[J].中国电机工程学报,2012,32(33):141-147.WU Xiaowen,SHU Naiqiu,LI Hongtao,et al.Thermal field calculation and analysis of gas insulated busbars based on fluid multiple species transport[J].Proceedings of the CSEE,2012,32(33):141-147.
[22]王运生.红外技术诊断电缆头过热缺陷[J].高电压技术,2004(s1):105-106.WANG Yunsheng.Diagnoses of overheat defectiveness of the cable head by infrared technique[J].High Voltage Engineering,2004(s1):105-106.
[23]孙达.基于概率密度的图像处理算法的研究与应用[D].哈尔滨:哈尔滨工业大学,2009.SUN Da.Research on density based image processing algorithms and application[D].Harbin:Harbin Institute of Technology,2009.