Suppression Solutions to Transient Traction Current Interference in Neutral Zone for Track Circuit
YANG Shiwu1, CHEN Bingjun1, CHEN Haikang2, CUI Yong1, TANG Qiankun3
1. School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing 100044, China; 2. Standards and Metrology Research Institute, China Academy of Railway Sciences, Beijing 100081, China; 3. China Railway Eryuan Engineering Group Limited Company, Chengdu 610031, China
Abstract：When an electric locomotive or an EMU (electric multiple unit) passes neutral zone in a track section，transient traction current is very likely to cause harmonic interference to track circuit，which may produce failure. To guarantee stable performance of track circuit under the influence of harmonic interference，the suppression methods of transient traction current are studied. Based on the European standards，the windowed FFT (fast Fourier transformation) method is adopted to design the procedure of harmonic data processing，and the analysis results of field test data are utilized to illustrate the interference mechanism for track circuit. Then，taking an example with a 1 700 Hz signal carrier and 1 750 Hz harmonic frequency，the solution and simulation results of FPGA (field-programmable gate array)-based FIR (finite impulse response) digital filter are briefly discussed from the point of direct suppression to harmonic interference. Due to the tiny difference between signal frequency and interference harmonic，the solution has to run at the cost of long response time and high order. Lastly，based on the current source feature of harmonic interference and project feasibility，the collaborative optimization scheme for the transmitter and attenuator of track circuit is proposed. Namely，by optimizing the transmitting level and attenuator step，the suppression to harmonic inference can be improved with an increase of 6 dB in signal-to-interference ratio while the operation states of track circuit are ensured including its clearance，occupancy and cab signaling.
YANG Shiwu,TIAN Jianzhao,XU Hao,et al. Analysis on harmonic current and its impact on track circuit in high speed railway[C]//2016 IEEE International Conference on Intelligent Rail Transportation. Birmingham:IEEE,2016:315-321.
[2]
YANG Shiwu,ZHU Bei,CLIVE Roberts,et al. Feature-based solution to harmonics interference on track circuit in electrified heavy haul railway[C]//2013 IEEE International Conference on Intelligent Rail Transportation. Beijing:IEEE,2013:297-301.
[3]
李彩霞,杨世武,张炜. 轨道电路不平衡牵引电流干扰测试及分析[J]. 铁道通信信号,2009,45(7):25-26 LI Caixia, YANG Shiwu, ZHANG Wei. Test and analysis of non-balance electric current interfere in track circuit[J]. Railway Signalling & Communication, 2009, 45(7):25-26
[4]
LI Jianqing,YANG Shiwu,REN Guoqiao. Research on anti-interference from heavy traction current to the signaling system of Datong-Qinhuangdao railway line[C]//Proceedings of 9th International Heavy Haul Conference. Shanghai:China Railway Publishing House,2009:734-748.
[5]
British Standard Institution. Railway applications-compatibility between rolling stock and train detection systems-part2:compatibility with track circuits:CLC/TS50238-2.2015[S]. London:British Standards Institution,2015.
ŽUPAN A,TEKLIC A T,FILIPOVIC-GRCIC B. Modeling of 25 kV electric railway system for power quality studies[C]//IEEE EUROCON Conference. Zagreb:IEEE,2013:844-849.
[8]
FATEN O,BEN AMMAR F. Compensation of harmonic disturbances in the tunisian SAHEL railway supply system[C]//1st International Conference on Electrical Engineering and Software Applications. Hammamet:IEEE,2013:574-578.
[9]
JIAO Jinghai,WEN Yinghong,LI Meng,et al. Research on vehicle onboard measurement system of traction harmonic current for analyzing interference on track circuit[C]//6th IEEE International Symposium on Microwave,Antenna,Propagation,and EMC Technologies. Shanghai:IEEE,2015:475-478.
[10]
王梓丞,郭进,张亚东,等. 基于FDTD接口方法的ZPW-2000轨道电路暂态分析[J]. 西南交通大学学报,2019,54(1):196-201, 218 WANG Zicheng, GUO Jin, ZHANG Yadong, et al. Transient analysis of ZPW-2000 track circuit based on FDTD interface method[J]. Journal of Southwest Jiaotong University, 2019, 54(1):196-201, 218
[11]
许童羽,程浩忠,周玉宏,等. 基于LabVIEW的配电网谐波在线监测与分析系统[J]. 电力系统保护与控制,2008,36(1):63-66 XU Tongyu, CHENG Haozhong, ZHOU Yuhong, et al. A LabVIEW-based system for distribution network harmonics monitoring and analysing[J]. Power System Protection and Control, 2008, 36(1):63-66
[12]
英超. 基于加窗插值FFT的电力系统谐波检测算法研究[D]. 锦州:辽宁工业大学,2015.
[13]
PHAM V L, WONG K P. Wavelet-transform-based algorithm for harmonic analysis of power system waveforms[J]. IEEE Proceedings-Generation,Transmission and Distribution, 1999, 146(3):249-254
[14]
毛广智,解学书. 无绝缘轨道电路系统的图形建模[J]. 计算机工程,2004,30(15):146-148 MAO Guangzhi, XIE Xueshu. Graphic modeling of jointless track circuit[J]. Computer Engineering, 2004, 30(15):146-148
[15]
RUDEZ U, MIHALIC R. Sympathetic inrush current phenomenon with loaded transformers[J]. Electric Power Systems Research, 2016, 138:3-10
[16]
何垚. 高速铁路车网谐波特性研究[D]. 成都:西南交通大学,2013.
[17]
HOBBS I. High speed power[J]. Power Engineering, 2007, 21(2):32-35
[18]
杨少兵,吴命利. 基于实测数据的高速动车组谐波分布特性与概率模型研究[J]. 铁道学报,2010,32(3):33-38 YANG Shaobing. WU Mingli. Study on harmonic distribution characteristics and probability model of high speed emu based on measured data[J]. Journal of the China Railway Society, 2010, 32(3):33-38
张海洋,许海平,方程,等. 基于谐振数字滤波器的直驱式永磁同步电机转矩脉动抑制方法[J]. 中国电机工程学报,2018,38(4):1222-1231,1299 ZHANG Haiyang, XU Haiping, FANG Cheng, et al. Torque ripple suppression method of direct-drive permanent magnet synchronous motor based on resonant digital filter[J]. Proceedings of the CSEE, 2018, 38(4):1222-1231,1299
