无功补偿型贯通同相供电系统谐振特性研究  

Harmonic Resonance Characteristics of Reactive Power Compensation-typed Continuous Co-phase Power Supply System

作　　者：钟帆 解绍锋[1] 黄大锐 李书亚 ZHONG Fan;XIE Shaofeng;HUANG Darui;LI Shuya(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 611756,Sichuan Province,China)

机构地区：[1]西南交通大学电气工程学院,四川省成都市611756

出　　处：《电网技术》2023年第8期3302-3310,共9页Power System Technology

基　　金：国家自然科学基金项目(51877182);四川省科技厅科技项目(2021YJ0028);中国国家铁路集团有限公司科技研究开发计划(SY2020G001)。

摘　　要：取消电分相实现铁路全线贯通后,牵引供电系统结构将发生较大改变,为预防实施贯通同相供电后谐波谐振带来的谐波放大、过电压等现象,针对贯通同相供电系统利用谐振模态分析法对系统节点导纳矩阵进行分析,通过对特征值、参与因子求解得到谐振信息。利用实测数据对理论分析进行验证,通过模态分析能够精确有效得到系统谐振频率。增加无功补偿型同相补偿装置后,探究系统的谐振点变化情况。研究当机车位置、牵引网长度、同相补偿装置中静止无功发生器(static var generator,SVG)各种参数等条件变化下整个系统的谐振点变化规律,为后续同相供电系统安全运行提供理论基础。The structure of the traction power supply system will be greatly changed after the cancellation of the electrical phase separation to achieve the all-connected railways.In order to prevent the harmonic amplification and overvoltage caused by the harmonic resonance after the implementation of the co-phase power supply,the system node admittance matrix is analyzed by using the resonance modal analysis for the continuous co-phase power supply system.The resonance information is obtained by solving the eigenvalues and the participation factors.The theoretical analysis is verified by the measured data.Through modal analysis,the system resonant frequency can be accurately and effectively obtained.After adding the reactive power compensation-typed co-phase compensation device,the changes of the resonance point of the system are explored.The study of the law of resonance points changes of the whole system under the variations of the positions of the locomotive,the lengths of the traction network and the various parameters of SVG in the co-phase compensation device dynamically will provide a theoretical basis for the safe operation of the co-phase power supply systems.

关 键 词：贯通同相供电 同相补偿装置 谐振分析 谐振变化规律 

分 类 号：TM721[电气工程—电力系统及自动化]