摘要
在国内电气化铁路的现场测试中发现了1种有别于谐波谐振现象的新型谐振不稳定问题,该文围绕高速列车与牵引供电网(以下简称车网)耦合系统中谐振不稳定问题的产生机理及影响规律进行了分析。采用阻抗分析法,建立了dq参考坐标系下小信号车、网阻抗传递函数模型;基于广义奈奎期特(Nyquist)判据,探寻了谐振不稳定现象的发生机理;分析了列车四象限整流器控制参数与牵引供电网参数对谐振不稳定的影响规律。仿真与实验结果表明,列车控制系统中电流环和锁相环的比例增益,以及牵引供电网等效电感等参数对谐振不稳定最为灵敏,因此在机车控制参数优化以及新建轨道线路设计时需重点考虑,这可为抑制谐振不稳定问题提供参考。
A new type of resonance instability issue,different from harmonic resonance phenomenon, was found in test sites of electric railways in China. The impedance-based analysis method was used to solve the problem. A small-signal impedance model of the train and network interaction system in the dq frame was established. By introducing the generalized Nyquist criterion, the mechanism of the resonance instability was analyzed. The control parameters of the four-quadrant converter and the traction network parameters were taken into consideration. Simulation and experimental results show that the proportional gain of the current loop and the phase locked loop, as well as the network inductance, are most sensitive to the resonance instability. It should be paid attention to in the design and optimization of the train control system and the newly built traction network for suppressing the resonance instability issue.
作者
陶海东
胡海涛
朱晓娟
杨孝伟
何正友
TAO Haidong;HU Haitao;ZHU Xiaojuan;YANG Xiaowei;HE Zhengyou(School of Electrical Engineering,Southwest Jiaotong University,Chengdu 610031,Sichuan Province,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2019年第8期2315-2324,共10页
Proceedings of the CSEE
基金
国家自然科学基金项目(51677154
51525702)~~
关键词
电气化铁路
车网耦合系统
谐振不稳定
小信号阻抗建模
灵敏度分析
electric railways
train and network interaction system
resonance instability
small-signal impedance modeling
sensitivity analysis
