10kV三相电缆插接式中间接头应力仿真分析
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摘要
电力系统对电气连接可靠、机械稳定性高的电缆中间接头的需求愈发迫切。以新型10kV三相电缆插接式中间接头为例,对中间接头用绝缘材料进行了拉伸和动态热机械力学性能测试,并进一步通过有限元软件,构建三相电缆插接式中间接头的应力计算模型。根据电动力-接触应力单向耦合仿真结果,短路电动力会对导体线芯周围的应力分布造成影响,在电动力较大处造成一定程度的应力分布不均匀,但最大应力值远低于材料极限强度,仍能保持线芯与压紧锥部分紧密接触具有可靠的电气连接性能及机械稳定性。
With the demand reliable-electrical-connection and high-mechanical-stability becomes more and more urgent,the new plug-in intermediate joint as an example the tensile and dynamic thermomechanical properties of the insulating materials,stress calculation model for intermediate joint constructed.According to the electrodynamic-stress unidirectional coupling simulation results,the stress distribution around the conductor core stress distribution will be uneven a large electrodynamic force the maximum stress value is much lower than the material limit.It can be concluded that the cable connectors reliable electrical connection performance and mechanical stability.
With the demand reliable-electrical-connection and high-mechanical-stability becomes more and more urgent,the new plug-in intermediate joint as an example the tensile and dynamic thermomechanical properties of the insulating materials,stress calculation model for intermediate joint constructed.According to the electrodynamic-stress unidirectional coupling simulation results,the stress distribution around the conductor core stress distribution will be uneven a large electrodynamic force the maximum stress value is much lower than the material limit.It can be concluded that the cable connectors reliable electrical connection performance and mechanical stability.
引文
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[10]刘超,阮江军,黄道春,等.考虑接触电阻下的电缆接头热点温度[J].高电压技术,2016,42(11):3634-3640.LIU Chao,RUAN Jiang-jun,HUANG Dao-chun,etal.Consider the Cable Joint Hot Spot Temperature under Contact Resistance[J].High Voltage Engineering,2016,42(11):3634-3640.
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[12]刘航宇,刘念,蒲丽娟,等.基于ANSYS的高压大截面电缆金具短路电动力和机械应力分析[J].电工技术学报,2016,31(05):170-176.LIU Hang-yu,LIU Nian,PU Li-juan,et al.Short-circuit Electric and Mechanical Stress Analysis of High-voltage Largesection Cable Fittings Based on ANSYS[J].Transactions of China Electrotechnology Society,2016,31(05):170-176.
[13]赵文杰.基于ANSYS/Workbench的高压触头热-结构分析[D].西安:西安工程大学,2016.ZHAO Wen-jie.Thermal-structural Analysis of High Voltage Contacts Based on ANSYS/Workbench[D].Xi′an:Xi′an Polytechnic University,2016.
[14]丁欣硕.ANSYS Workbench 17.0有限元分析从入门到精通[M].清华大学出版社,2017.
[2]蒋晓娟,梁惟钢,夏俊峰,等.35kV电力电缆冷缩式中间接头典型缺陷电场计算及故障分析[J].绝缘材料,2015(11):59-63.JIANG Xiao-juan,XIA Jun-feng,et al.Electric Field Calculation and Fault Analysis of Typical Defects of 35kV Power Cable Cold-shrinkable Intermediate Joint[J].Insulating Materials,2015(11):59-63..
[3]顾金,王俏华,尹毅,等.高压直流XLPE电力电缆预制式接头的设计[J].高电压技术,2009,35(12):3159-3163.GU Jin,WANG Qiao-hua,YIN Yi,et al.Design of Prefabricated Joints for High Voltage DC XLPE Power Cables[J].High Voltage Technology,2009,35(12):3159-3163.
[4]张宇.高压电缆中间接头故障及处理[J].中国高新区,2018(06):165-167.ZHANG Yu.High-voltage Cable Intermediate Connector Failure and Treatment[J].Science&Technology Industry Parks,2018(06):165-167.
[5]卞斌,宿文波,朱占巍,等.110kV交联聚乙烯电缆接头防爆技术及其温升特性研究[J].电力学报,2018,33(04):278-286.BIAN Bin,SU Wen-bo,ZHU Zhan-wei,et al.Explosion-proof Technology and Temperature Rise Characteristics of 110kV XLPE Cable Joint[J].Journal of Electric Power,2018,33(04):278-286.
[6]杨帆,杨旗,程鹏,等.电缆接头内部气隙放电缺陷下的绝缘劣化程度表征方法[J].电工技术学报,2017,32(02):24-32.YANG Fan,YANG Qi,CHENG Peng,et al.Characterization Method of Insulation Degradation Degree under Air Gap Discharge Defect in Cable Joint[J].Transactions of China Electrotechnical Society,2017,92(02):24-32.
[7]黄奇.10kV电缆接头典型缺陷局部放电研究[D].广州:华南理工大学,2016.HUANG Qi.Study on Partial Discharge of Typical Defects of 10kV Cable Joints[D].Guangzhou:South China University of Technology,2016.
[8]林冬,张雪莹,王鹏宇,等.高压电缆中间接头轴向传热的实验研究[J].电线电缆,2017(01):5-10.LIN Dong,ZHANG Xue-ying,WANG Peng-yu,etal.Experimental Study on Axial Heat Transfer of Intermediate Joints of High Voltage Cables[J].Electic Wire&Cable,2017(01):5-10.
[9]李昭红.高压直流XLPE绝缘电缆中间接头电热耦合仿真研究和稳态载流量计算[D].广州:华南理工大学,2016.LI Zhao-hong.Electro-thermal Coupling Simulation Study and Steady-state Current-carrying Calculation of High-voltage DC XLPE Insulated Cable Intermediate Joint[D].Guangzhou:South China University of Technology,2016.
[10]刘超,阮江军,黄道春,等.考虑接触电阻下的电缆接头热点温度[J].高电压技术,2016,42(11):3634-3640.LIU Chao,RUAN Jiang-jun,HUANG Dao-chun,etal.Consider the Cable Joint Hot Spot Temperature under Contact Resistance[J].High Voltage Engineering,2016,42(11):3634-3640.
[11]罗继辉,徐明良,李春洋,等.110kV电缆预制式中间接头缺陷分析及防范措施[J].科技与创新,2017(12):111-112.LUO Ji-hui,XU Ming-liang,LI Chun-yang,et al.Defect Analysis and Preventive Measures of Prefabricated Intermediate Joints for 110kV Cables[J].Science and Technology&Innovation,2017(12):111-112.
[12]刘航宇,刘念,蒲丽娟,等.基于ANSYS的高压大截面电缆金具短路电动力和机械应力分析[J].电工技术学报,2016,31(05):170-176.LIU Hang-yu,LIU Nian,PU Li-juan,et al.Short-circuit Electric and Mechanical Stress Analysis of High-voltage Largesection Cable Fittings Based on ANSYS[J].Transactions of China Electrotechnology Society,2016,31(05):170-176.
[13]赵文杰.基于ANSYS/Workbench的高压触头热-结构分析[D].西安:西安工程大学,2016.ZHAO Wen-jie.Thermal-structural Analysis of High Voltage Contacts Based on ANSYS/Workbench[D].Xi′an:Xi′an Polytechnic University,2016.
[14]丁欣硕.ANSYS Workbench 17.0有限元分析从入门到精通[M].清华大学出版社,2017.