单次电弧条件下辐射电场噪声时域传播特性
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摘要
为准确评估载流滑动摩擦副周围的电磁环境及干扰水平,利用自行研制的实验装置,在电波暗室环境中开展了单次电弧放电的辐射电磁噪声实验,基于电场噪声辐射阻尼系数分析了不同测量距离、不同接触电流条件下的电弧辐射电场噪声的时域传播特性。在不同的波峰范围内,电场噪声辐射阻尼系数是不同的,在测量距离不变的条件下,电场噪声辐射阻尼系数随接触电流的增加而减小;在接触电流不变的条件下,电场噪声辐射阻尼系数随测量距离的增加而增大。最后,建立了电场噪声辐射阻尼系数与测量距离、接触电流之间的数学模型,为评估不同工况条件下电场噪声的衰减快慢提供了参考。
In order to accurately evaluate the electromagnetic environment and the interference level around the current-carrying sliding friction pairs,the radiated electromagnetic noise experiment under the single arc discharge condition was carried out by using a selfdeveloped experimental system inside an anechoic chamber. Based on the radiation damping coefficient of electric field noise,the timedomain propagation characteristics of electric field noise radiated by arc were analyzed under different measure distance and contact current conditions. The results showed that the radiation damping coefficients of the electric field noise are different in different peak ranges. Under the same measure distance,the radiation damping coefficient decreases with the increase of contact current. Under the same contact current,the radiation damping coefficient increases with the increase of measure distance. Finally,a mathematical model between the radiation damping coefficient and measured distance and contact current was established,It can be used to provide a reference for evaluating the attenuation speed of electric field noise under different working conditions.
In order to accurately evaluate the electromagnetic environment and the interference level around the current-carrying sliding friction pairs,the radiated electromagnetic noise experiment under the single arc discharge condition was carried out by using a selfdeveloped experimental system inside an anechoic chamber. Based on the radiation damping coefficient of electric field noise,the timedomain propagation characteristics of electric field noise radiated by arc were analyzed under different measure distance and contact current conditions. The results showed that the radiation damping coefficients of the electric field noise are different in different peak ranges. Under the same measure distance,the radiation damping coefficient decreases with the increase of contact current. Under the same contact current,the radiation damping coefficient increases with the increase of measure distance. Finally,a mathematical model between the radiation damping coefficient and measured distance and contact current was established,It can be used to provide a reference for evaluating the attenuation speed of electric field noise under different working conditions.
引文
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[2]YAMADA K,HIURA S,CIAPPA M.Analysis of conducted and radiated noise propagation using comprehensive electromagnetic model of power MHzswitching circuit[C].International Symposium on Electromagnetic Compatibility,2013:545-550.
[3]MA L,WEN Y,ZHOU K,et al.Research on electromagnetic radiated disturbance of pantograph arc in high-speed railway[C].5th IEEE International Symposium on Microwave,Antenna,Propagation and EMC Technologies for Wireless Communications,2013,637-641.
[4]DUDOYER S,DENIAU V,AMBELLOUIS S,et al.Classification of transient EM noises depending on their effect on the quality of GSM-R reception[J].IEEETransactions on Electromagnetic Compatibility,2013,55(5):867-874.
[5]GUO F Y,FENG X L,WANG Z Y,et al.Research on time domain characteristics and mathematical model of electromagnetic radiation noise produced by single arc[J].IEEE Transactions on Components,Packaging and Manufacturing Technology,2017,7(12):2008-2017.
[6]郭凤仪,张艳立,王智勇,等.弓网电弧实验系统与辐射噪声实验研究[J].电工电能新技术,2015,34(12):49-53.GUO F Y,ZHANG Y L,WANG ZH Y,et al.Design of pantograph arc experiment system and study on radiated noise[J].Advanced Technology of Electrical Engineering and Energy,2015,34(12):49-53.
[7]WANG Z Y,GUO F Y,WANG X L,et al.Experimental research on radiated electromagnetic noise of pantograph arc[C].IEEE 61st Holm Conference on Electrical Contacts(Holm),2015,256-261.
[8]WU H T,CUI X,LIU X F,et al.Characteristics of electromagnetic disturbance for intelligent component due to switching operations via a 1100 k V AC GIS test circuit[J].IEEE Transactions on Power Delivery,2017,32(5):2228-2237.
[9]DENIAU V,FRIDHI H,HEDDEBAUT M,et al.Analysis and modelling of the EM interferences produced above a train associated to the contact between the catenary and the pantograph[C].International Symposium on Electromagnetic Compatibility,2013:721-726.
[10]熊庆,汲胜昌,陆伟锋,等.低气压下串联直流电弧故障电磁辐射幅值及频率特性[J].中国电机工程学报,2017,37(4):1071-1080.XIONG Q,JI SH C,LU W F,et al.Amplitude and frequency characteristics of electromagnetic radiation ofseries DC arc faults under low pressure[J].Proceedings of the CSEE,2017,37(4):1071-1080.
[11]马云双,刘志刚,马岚,等.动车组弓网离线放电电磁骚扰源模型研究[J].中国铁道科学,2013,34(5):76-81.MA Y SH,LIU ZH G,MA L,et al.Electromagnetic disturbance source model of discharge upon pantographcatenary disconnection of EMU[J].China Railway Science,2013,34(5):76-81.
[12]杨晓嘉,朱峰,邱日强,等.弓网电弧辐射特性及对机场下滑信标的影响[J].航空学报,2018,39(1):253-260.YANG X J,ZHU F,QIU R Q,et al.Radiation characteristics of pantograph-catenary arc and its influence on airport glide beacon[J].Acta Aeronautica et Astronautica Sinica,2018,39(1):253-260.
[13]支永健.弓网电弧电磁干扰传播的若干理论研究[D].杭州:浙江大学,2013.ZHI Y J.Some theoretical studies on pantograph-catenary arc electromagnetic interference propagation[D].Hangzhou:Zhejiang University,2013.
[14]冯晓丽,王智勇,杨紫明,等.基于HHT的单次电弧辐射电磁噪声时频分析[J].电工电能新技术,2018,37(4):57-63.FENG X L,WANG ZH Y,YANG Z M,et al.Timefrequency analysis of electromagnetic noise produced by single arc based on HHT[J].Advanced Technology of Electrical Engineering and Energy,2018,37(4):57-63.
[15]张卫东,高飞,崔翔.高压直流换流站瞬态电磁骚扰特征的小样本统计方法[J].电网技术,2012,36(5):11-15.ZHANG W D,GAO F,CUI X.Small sample statistics for transient electromagnetic disturbance characteristics of HVDC converter stations[J].Power System Technology,2012,36(5):11-15.