| 引用本文: | 陈浔俊,李国荣,刘志刚,邓云川.计及分布参数的双端口等效牵引网建模、验证及稳定性分析[J].电力自动化设备,2022,42(6): |
| CHEN Xunjun,LI Guorong,LIU Zhigang,DENG Yunchuan.Modeling, verification and stability analysis of dual-port equivalent traction network considering distribution parameters[J].Electric Power Automation Equipment,2022,42(6): |
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| 摘要: |
| 针对现有牵引网模型难以进行阻抗建模以及进行系统稳定性分析的问题，采用一种牵引网的戴维南-戴维南等效电路模型，在考虑牵引网的分布参数特性的同时，将牵引网简化为一个含受控源的双端口电路。与实际线路测量数据的对比结果表明，采用所提建模方法得到的线路参数在中频段吻合实际线路数据。基于所提模型对车网级联系统进行稳定性分析，结果表明所提模型相较于传统简单模型能够更准确地分析系统低频振荡，同时牵引网长度显著影响系统低频振荡稳定性。 |
| 关键词: 高速铁路 车网系统 牵引网建模 阻抗验证 稳定性 |
| DOI：10.16081/j.epae.202202019 |
| 分类号:TM73 |
| 基金项目:国家自然科学基金高铁联合基金重点资助项目(U1434203)；四川省科技计划科技创新人才项目(2021JDRC0008)；中铁二院科研项目(KYY2020033(20-21),KYY2020132(20-22)) |
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| Modeling, verification and stability analysis of dual-port equivalent traction network considering distribution parameters |
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CHEN Xunjun1, LI Guorong1, LIU Zhigang1, DENG Yunchuan2
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1.School of Electrical Engineering, Southwest Jiaotong University, Chengdu 611756, China;2.China Railway Eryuan Engineering Group Co.,Ltd.,Chengdu 610031, China
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| Abstract: |
| Aiming at the problem that the current traction network models are difficult for impedance mode-ling and system stability analysis, a Thevenin-Thevenin equivalent circuit model of traction network is adopted, and the traction network is simplified into a dual-port circuit with controlled sources considering the distribution parameter characteristics of the traction network. The results compared with the measured data of actual lines show that the line parameters obtained by the proposed modeling method are consistent with the actual line data in the middle frequency band. The stability of a vehicle-grid cascaded system is analyzed based on the proposed model, and the results show that the proposed model can analyze low-frequency oscillation of the system more accurately than the traditional simple models, and the length of the traction network significantly affects the low-frequency oscillation stability of the system. |
| Key words: high-speed railway vehicle-grid system traction network modeling impedance verification stability |
