基于模态分析的运动负荷牵引电网谐波谐振分析  

Harmonic resonance assessment of traction system with moving load based on modal analysis

作　　者：徐志强[1] 李冰[1] 周田华 张海波[1] 

机构地区：[1]北京送变电公司,北京100044

出　　处：《电力系统保护与控制》2010年第19期76-80,121,共6页Power System Protection and Control

摘　　要：为了防止牵引网谐波谐振发生时产生的系统过电压,须获得准确的谐波谐振频率及位置,从而消除运动负荷谐波谐振对牵引网的影响。利用模态分析法,对牵引网络节点导纳矩阵的特征根进行分析,从而得出运动负荷牵引电网谐波谐振的产生与频率及机车运行位置的关系。仿真分析所得谐波谐振与频谱分析的比较结果证明此方法正确。理论分析及实际应用均证明该方法是进行运动负荷牵引网谐波分析的有效工具。In order to prevent the over-voltage brought by harmonic resonance of traction system, it is necessary to get the exact frequency and the position of locomotive which can eliminate the effects of moving load harmonic resonance on the traction system.Modal analysis is used to study the eigenvalues of the network admittance matrix. Using this method, the relationship between harmonic resonance of traction system and frequency and locomotive position can be obtained. C ompared with the result of frequency scan analysis,it demonstrates that the method used in this paper for simulation is correct. T heoretical analysis and case study have confirmed that the used method is a valuable tool of harmonic analysis for traction power system with moving load.

关 键 词：牵引系统 运动负荷 谐波谐振 模态分析 特征根 

分 类 号：TM711[电气工程—电力系统及自动化]