基于宽频带扰动的牵引供电系统频域阻抗测量方法
|
摘要
当不能准确获取牵引供电系统详细的拓扑及参数时,很难对其频域阻抗特性进行量化计算与分析。为得到精确的牵引供电系统频域阻抗特性,提出了一种基于宽频带扰动的牵引供电系统频域阻抗精确测量方法。介绍了牵引供电系统频域阻抗测量原理;基于正弦脉宽调制(SPWM)机理,结合能量谱分析,提出了一种只需一次实验即能得到牵引供电系统测量点处精确频域阻抗特性的测量方法;通过软件仿真和实物实验分别对所建牵引供电系统模型进行频域阻抗测量,结果表明阻抗测量值均能够与理论值保持一致,共同验证了所提阻抗测量方法的正确性与实用性。
It is difficult to quantify the frequency-domain impedance of the traction power supply system when the accurate topology and parameters are unavailable. To obtain accurate frequency-domain impedance characteristics of traction power supply system,a broadband perturbation-based impedance measurement method is presented. The impedance measurement principles of traction power supply system and calculation formula are introduced. Based on the SPWM( Sinusoidal Pulse Width Modulation) mechanism and the energy spectrum analysis,a disturbance method is proposed to obtain the accurate frequency domain impedance characteristics at the measuring points of the traction power supply system through only one perturbation experiment. The impedance of traction power supply system is obtained using both software simulation and physical experiment. Test results show that the measurement values are consistent with theoretical values,which verifies the effectiveness of the proposed method.
It is difficult to quantify the frequency-domain impedance of the traction power supply system when the accurate topology and parameters are unavailable. To obtain accurate frequency-domain impedance characteristics of traction power supply system,a broadband perturbation-based impedance measurement method is presented. The impedance measurement principles of traction power supply system and calculation formula are introduced. Based on the SPWM( Sinusoidal Pulse Width Modulation) mechanism and the energy spectrum analysis,a disturbance method is proposed to obtain the accurate frequency domain impedance characteristics at the measuring points of the traction power supply system through only one perturbation experiment. The impedance of traction power supply system is obtained using both software simulation and physical experiment. Test results show that the measurement values are consistent with theoretical values,which verifies the effectiveness of the proposed method.
引文
[1]中国铁道科学研究院.大秦线HXD1型机车车网匹配关系测试报告[R].北京:中国铁道科学研究院,2008.
[2]上海南翔开闭所. CRH1067接触网电压电流测试报告[R].北京:中国铁道科学研究院,2010.
[3]张桂南,刘志刚,向川,等.交-直-交电力机车接入的牵引供电系统电压波动特性[J].电力自动化设备,2018,38(1):121-128.ZHANG Guinan,LIU Zhigang,XIANG Chuan,et al. Voltage fluctuation characteristic of traction power supply system considering ACDC-AC electric locomotives accessed[J]. Electric Power Au-tomation Equipment,2018,38(1):121-128.
[4]王晓兰,李晓晓.孤岛模式下风电直流微电网小信号稳定性分析[J].电力自动化设备,2017,37(5):92-99.WANG Xiaolan,LI Xiaoxiao. Small-signal stability analysis of islanded DC microgrid with wind power[J]. Electric Power Automation Equipment,2017,37(5):92-99.
[5]李强.电气化铁路车网电气匹配问题[J].电气化铁道,2014(3):13-16.LI Qiang. Electrical matching problem of electrified railway network[J]. Electric Railway,2014(3):13-16.
[6]陶海东,胡海涛,姜晓峰,等.牵引供电低频网压振荡影响规律研究[J].电网技术,2016,40(6):1830-1838.TAO Haidong,HU Haitao,JIANG Xiaofeng,et al. Research on low frequency voltage oscillation in traction power supply system and its affecting factors[J]. Power System Technology,2016,40(6):1830-1838.
[7]张权,胡海涛,陶海东,等.基于电容器投切法的牵引供电系统谐波阻抗测试分析[J].电力自动化设备,2017,37(11):145-150.ZHANG Quan,HU Haitao,TAO Haidong,et al. Harmonic impedance measurement analysis of traction power supply system based on capacitor switching technology[J]. Electric Power Automation Equipment,2017,37(11):145-150.
[8]谢少军,季林,许津铭.并网逆变器电网阻抗检测技术综述[J].电网技术,2015,39(2):320-326.XIE Shaojun,JI Lin,XU Jinming. Review of grid impedance estimation for grid-connected inverter[J]. Power System Technology,2015,39(2):320-326.
[9]COBRECES S,BUENO E J,PIZARRO D,et al. Grid impedance monitoring system for distributed power generation electronic interfaces[J]. IEEE Transactions on Instrumentation and Measurement,2009,58(9):3112-3121.
[10]MAURICIO C,SUN Jian. Adaptive control of grid-connected inverters based on online grid impedance measurements[J]. IEEE Transactions on Sustainable Energy,2014,5(2):516-523.
[11]岳小龙,卓放,张政华,等.电力电子系统阻抗测量的分段二叉树法[J].电工技术学报,2015,30(24):76-83.YUE Xiaolong,ZHUO Fang,ZHANG Zhenghua,et al. Segmented binary tree method for power electronic system impedance measurement[J]. Transactions of China Electrotechnical Society,2015,30(24):76-83.
[12]师洪涛,卓放,杨祯,等.基于改进正弦调制电流注入的三相交流电源系统频域阻抗测量研究[J].电工技术学报,2015,30(8):257-264.SHI Hongtao,ZHUO Fang,YANG Zhen,et al. Study of harmonic impedance measurement for three-phase AC power system based on an improved modulated current injection method[J]. Transactions of China Electrotechnical Society,2015,30(8):257-264.
[13]HUANG Jing,KEITH A C,MOHAMED B. Small-signal impedance measurement of power-electronics-based AC power systems using line-to-line current injection[J]. IEEE Transactions on Power Electronics,2009,24(2):445-455.
[14]TOMI R,TUOMAS M,ENRICO S. MIMO-identification techniques for rapid impedance-based stability assessment of three-phase systems in DQ domain[J]. IEEE Transactions on Power Electronics,2018,33(5):4015-4022.
[15]TOMI R,MATTI V,SUN Jian. Online grid impedance measurement using discrete-interval binary sequence injection[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics,2014,2(4):985-993.
[16]MICHAEL J,HAUKE L,TRUNG D T,et al. Frequency dependent grid-impedance determination with pulse-width-modulation-signals[C]∥Compatibility and Power Electronics(CPE). Tallinn,Estonia:[s.n.],2011:131-136.
[17]赵朝蓬.徐州铁路枢纽接触网电压低频振荡分析及对策研究[J].电力科学与技术学报,2016,31(2):89-96.ZHAO Chaopeng. Low-frequency voltage oscillation and mitigation of catenary system in Xuzhou railway hub[J]. Journal of Electric Power Science and Technology,2016,31(2):89-96.
[18] JIANG Xiaofeng,HU Haitao,HE Zhengyou,et al. Study on lowfrequency voltage fluctuation of traction power supply system introduced by multiple modern trains[J]. Electric Power Systems Research,2017,146:246-257.
[2]上海南翔开闭所. CRH1067接触网电压电流测试报告[R].北京:中国铁道科学研究院,2010.
[3]张桂南,刘志刚,向川,等.交-直-交电力机车接入的牵引供电系统电压波动特性[J].电力自动化设备,2018,38(1):121-128.ZHANG Guinan,LIU Zhigang,XIANG Chuan,et al. Voltage fluctuation characteristic of traction power supply system considering ACDC-AC electric locomotives accessed[J]. Electric Power Au-tomation Equipment,2018,38(1):121-128.
[4]王晓兰,李晓晓.孤岛模式下风电直流微电网小信号稳定性分析[J].电力自动化设备,2017,37(5):92-99.WANG Xiaolan,LI Xiaoxiao. Small-signal stability analysis of islanded DC microgrid with wind power[J]. Electric Power Automation Equipment,2017,37(5):92-99.
[5]李强.电气化铁路车网电气匹配问题[J].电气化铁道,2014(3):13-16.LI Qiang. Electrical matching problem of electrified railway network[J]. Electric Railway,2014(3):13-16.
[6]陶海东,胡海涛,姜晓峰,等.牵引供电低频网压振荡影响规律研究[J].电网技术,2016,40(6):1830-1838.TAO Haidong,HU Haitao,JIANG Xiaofeng,et al. Research on low frequency voltage oscillation in traction power supply system and its affecting factors[J]. Power System Technology,2016,40(6):1830-1838.
[7]张权,胡海涛,陶海东,等.基于电容器投切法的牵引供电系统谐波阻抗测试分析[J].电力自动化设备,2017,37(11):145-150.ZHANG Quan,HU Haitao,TAO Haidong,et al. Harmonic impedance measurement analysis of traction power supply system based on capacitor switching technology[J]. Electric Power Automation Equipment,2017,37(11):145-150.
[8]谢少军,季林,许津铭.并网逆变器电网阻抗检测技术综述[J].电网技术,2015,39(2):320-326.XIE Shaojun,JI Lin,XU Jinming. Review of grid impedance estimation for grid-connected inverter[J]. Power System Technology,2015,39(2):320-326.
[9]COBRECES S,BUENO E J,PIZARRO D,et al. Grid impedance monitoring system for distributed power generation electronic interfaces[J]. IEEE Transactions on Instrumentation and Measurement,2009,58(9):3112-3121.
[10]MAURICIO C,SUN Jian. Adaptive control of grid-connected inverters based on online grid impedance measurements[J]. IEEE Transactions on Sustainable Energy,2014,5(2):516-523.
[11]岳小龙,卓放,张政华,等.电力电子系统阻抗测量的分段二叉树法[J].电工技术学报,2015,30(24):76-83.YUE Xiaolong,ZHUO Fang,ZHANG Zhenghua,et al. Segmented binary tree method for power electronic system impedance measurement[J]. Transactions of China Electrotechnical Society,2015,30(24):76-83.
[12]师洪涛,卓放,杨祯,等.基于改进正弦调制电流注入的三相交流电源系统频域阻抗测量研究[J].电工技术学报,2015,30(8):257-264.SHI Hongtao,ZHUO Fang,YANG Zhen,et al. Study of harmonic impedance measurement for three-phase AC power system based on an improved modulated current injection method[J]. Transactions of China Electrotechnical Society,2015,30(8):257-264.
[13]HUANG Jing,KEITH A C,MOHAMED B. Small-signal impedance measurement of power-electronics-based AC power systems using line-to-line current injection[J]. IEEE Transactions on Power Electronics,2009,24(2):445-455.
[14]TOMI R,TUOMAS M,ENRICO S. MIMO-identification techniques for rapid impedance-based stability assessment of three-phase systems in DQ domain[J]. IEEE Transactions on Power Electronics,2018,33(5):4015-4022.
[15]TOMI R,MATTI V,SUN Jian. Online grid impedance measurement using discrete-interval binary sequence injection[J]. IEEE Journal of Emerging and Selected Topics in Power Electronics,2014,2(4):985-993.
[16]MICHAEL J,HAUKE L,TRUNG D T,et al. Frequency dependent grid-impedance determination with pulse-width-modulation-signals[C]∥Compatibility and Power Electronics(CPE). Tallinn,Estonia:[s.n.],2011:131-136.
[17]赵朝蓬.徐州铁路枢纽接触网电压低频振荡分析及对策研究[J].电力科学与技术学报,2016,31(2):89-96.ZHAO Chaopeng. Low-frequency voltage oscillation and mitigation of catenary system in Xuzhou railway hub[J]. Journal of Electric Power Science and Technology,2016,31(2):89-96.
[18] JIANG Xiaofeng,HU Haitao,HE Zhengyou,et al. Study on lowfrequency voltage fluctuation of traction power supply system introduced by multiple modern trains[J]. Electric Power Systems Research,2017,146:246-257.