Suzhou Electric Appliance Research Institute
期刊号: CN32-1800/TM| ISSN1007-3175

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基于虚拟阻抗的交直交牵引变电所谐波补偿策略研究

来源:电工电气发布时间:2021-05-25 13:25 浏览次数:528

基于虚拟阻抗的交直交牵引变电所谐波补偿策略研究

李林蔚
(中车工业研究院有限公司,北京 100070)
 
    摘 要:运用虚拟阻抗技术进行谐波补偿,可降低供电电压的谐波畸变率,从而改善电压质量。分析了电力机车谐波电流对交直交牵引变电所供电电压的影响和引入虚拟阻抗技术进行谐波补偿的原理。使用带通滤波器从牵引变电所输出电流中分解出各次谐波分量,并在谐波域引入虚拟阻抗,抵消牵引变电所输出端等效阻抗,降低供电电压的谐波畸变率。该方案无需增加额外补偿设备,只需改进控制策略即可改善供电电压质量。设计了控制策略,并基于 MATLAB/Simulink 软件进行了仿真验证,结果表明,所提方案明显降低了交直交牵引变电所供电电压的谐波畸变率,具有谐波补偿效果。
    关键词:交直交牵引变电所;电能质量;多重化准比例谐振控制器;虚拟阻抗;谐波补偿
    中图分类号:TM922.4 ;U223     文献标识码:A     文章编号:1007-3175(2021)05-0012-05
 
Research on the Harmonic Compensation Strategy of AC-DC-AC Traction
Substation Based on Virtual Impedance
 
LI Lin-wei
(CRRC Industrial Research Institute Co., Ltd, Beijing 100070,China)
 
    Abstract: The virtual impedance technology is introduced to compensate the harmonics to reduce the harmonic distortion of the supply voltage, so as to improve the quality of supply voltage. This paper analyzes the influence of the harmonics generated by locomotive on the supply voltage, and the principle of virtual impedance technology to compensate the harmonics. Each harmonic component is decomposed from the output current of traction substation by the band-pass filter, and the virtual impedance is introduced into the control circuit to offset the equivalent impedance at the output of the traction substation, so as to reduce the harmonic distortion of the supply voltage. The scheme does not need to add additional compensation equipment, but needs to modify the control strategy to improve the quality of supply voltage.The control strategy is designed, and simulation based on MATLAB/Simulink is conducted. The results show that the proposed scheme can
significantly reduce the harmonic distortion of the supply voltage of the ac-dc-ac traction substation.
    Key words: AC-DC-AC traction substation; power quality; multiple quasi proportional resonance(M-Q-PR) controller; virtual impedance;harmonic compensation
 
参考文献
[1] 常非,杨中平,林飞. 基于 MMC 的新型牵引供电系统研究 (一) [J]. 铁道学报,2016,38(12) :41-46.
[2] 常非,杨中平,林飞. 基于 MMC 的新型牵引供电系统研究 (二) [J]. 铁道学报,2017,39(2) :39-43.
[3] HE Xiaoqiong,SHU Zeliang,PENG Xu, et al.Advanced Cophase Traction Power Supply System Based on Three-Phase to Single-Phase Converter[J].IEEE Transactions on Power Electronics,2014,29(10) :5323-5333.
[4] 夏焰坤,李群湛,解绍锋,等. 电气化铁道贯通同相供电变电所控制策略研究[J] . 铁道学报,2014,36(8) :25-31.
[5] 陈民武,宫衍圣,李群湛,等. 电气化铁路电能质量评估及新型控制方案研究[J] . 电力系统保护与控制,2012,40(16) :141-147.
[6] 李强,吴命利. 交流传动机车与直流传动机车混合运用条件下牵引网电压控制技术[J] . 铁道学报,2014,36(8),19-24.
[7] 邢亭婷. 同相牵引供电系统能耗研究[J] . 节能技术,2017,35(3) :279-282.
[8] 王子江. 国内外谐波限值标准综述及展望[C]// 全国电压电流等级和频率标准化技术委员会第九届电能质量研讨会论文集,2018 :18.
[9] ZANOTTO L, PIOVAN R, TOIGO V, et al.Filter design for harmonic reduction in high-voltage booster for railway applications[J].IEEE Transactions on Power Delivery,2005,20(1) :258-263.
[10] 桂卫华,张定华,薛蛟. 基于大容量 SVC 的 SCOTT 变压器电能质量治理方案及应用[J] . 铁道学报,2011,33(1) :31-38.
[11] BUENO A, ALLER J M, RESTREPO J A, et al.Harmonic and Unbalance Compensation Based on Direct Power Control for Electric Railway Systems[J] . IEEE Transactions on Power Electronics,2013,28(12) :5823-5831.
[12] TAN Pee-Chin, LOH Poh Chiang, HOLMES Grahame.Optimal impedance termination of 25-kV electrified railway systems for improved power quality[J].IEEE Transactions on Power Delivery,2005,20(2) :1703-1710.
[13] 赵伟,罗安,曹一家,等. 三相- 两相牵引变电所用无功动态补偿与谐波治理混合系统的研究[J] .中国电机工程学报,2009,29(28) :107-114.
[14] 王跃,杨君,王兆安,等. 电气化铁路用混合电力滤波器的研究[J] . 中国电机工程学报,2003,23(7) :23-27.
[15] 程军照,李澍森,吴在军,等. 微电网下垂控制中虚拟电抗的功率解耦机理分析[J] . 电力系统自动化,2012,36(7) :27-32.
[16] HOU Guolian, XING Fulin, YANG Yu, et al.Virtual negative impedance droop method for parallel inverters in microgrids[C]//2015 IEEE 10th Conference on Industrial Electronics and Applications ( ICIEA ),2015 :1009-1013.
[17] HE Jinwei, LI Yunwei, BOSNJAK Dubravko,et al.Investigation and Active Damping of Multiple Resonances in a Parallel-Inverter-Based Microgrid[J].IEEE Transactions on Power Electronics,2013,28(1) :234-246.
[18] HE Jinwei, LI Yunwei.Analysis, Design, and Implementation of Virtual Impedance for Power Electronics Interfaced Distributed Generation[J].IEEE Transactions on Industry Applications,2011,47(6) :2525-2538.
[19] GUERRERO Josep M, BERBEL Nestor, MATAS Jose,et al.Decentralized Control for Parallel Operation of Distributed Generation Inverters Using Resistive Output Impedance[J].IEEE Transactions on Industrial Electronics,2007,54(2) :994-1004.
[20] PLET Cornelis A, GREEN Timothy C.A method of voltage limiting and distortion avoidance for islanded inverter-fed networks under fault[C]//Proceedings of the 2011 14th European Conference on Power Electronics andApplications,2011 :1-8.
[21] CHEN Hsin-Chih, KO Hsin-Cheng, CHENG Po-Tai.An inrush current mitigation method for the grid-connected converters in the low-voltage ride-through operation[C]//2013 IEEE Energy Conversion Congress and Exposition,2013 :1717-1724.
[22] BHATTACHARYA S, CHENG Po-Tai, DIVAN D M.Hybrid solutions for improving passive filter performance in high power applications[J].IEEE Transactions on Industry Applications,1997,33(3) :732-747.