摘要
为了评估牵引供电系统的谐波谐振特性,从牵引供电系统设计角度出发,建立牵引供电系统谐波特性仿真模型和牵引负荷谐波发射模型。研究牵引供电方案中外部电源系统短路容量大小和馈线电缆长度变化对牵引供电系统谐振特性的影响规律。在供电方案综合评判中引入谐波谐振特性分析,研究牵引供电方案与牵引负荷谐波特性匹配问题及其对供电质量的影响。研究结果表明,牵引供电设计参数的变化对谐波谐振特性影响显著,通过优化牵引供电方案可以减少甚至避免发生谐波谐振。
In order to evaluate the characteristics of harmonic resonance of traction power supply system and according to the design of traction power supply scheme, the harmonic characteristic simulation model of traction power supply system and harmonic emission model of locomotives （including electric multiple units） are built, and the influence law of harmonic resonance caused by the change of short-circuit capacity of power system and length of feeder cable is studied. The harmonic resonance assessment is applied in the design of traction power supply system, the matching problem of harmonic characteristics between traction power supply system and traction load is discussed, as well as the effect on the power quality. It is proved that the design parameters of traction power supply system have significant effect on harmonic resonance and the optimization design of traction power supply system can reduce even avoid harmonic resonance.
出处
《电力系统保护与控制》
EI
CSCD
北大核心
2013年第15期142-147,共6页
Power System Protection and Control
基金
国家自然科学基金(U1134205
51177139)
成都市科技计划项目(12DXYB359JH)~~
关键词
牵引供电系统
电气参数
谐波谐振
供电方案
优化
traction power supply system
electrical parameter
harmonic resonance
power supply scheme
optimization
