摘要
针对电气化铁道牵引供电系统存在大量的负序、谐波、无功等问题,提出了基于平衡变压器的背靠背SVG补偿方案.方案中综合潮流控制器装置主要由两个背靠背的单相二极管箝位型三电平电压源变流器构成,主要用于传递有功功率、补偿无功功率及谐波,使得牵引供电系统相对电力系统而言,是一个三相对称纯阻性网络.以实测牵引负荷作为给定负荷进行仿真验证,结果表明,该方案能实时动态地补偿电气化铁道谐波、无功和负序电流,改善电气化铁道电能质量.
According to the problems of negative sequence,reactive and harmonic that caused by traction power supply system,back-to-back SVG compensation scheme based on balance transformer is proposed.Comprehensive power flow controller is composed of two back-to-back single-phase diode-clamped three-level voltage source converter.It mainly transfers the active power,compensates the reactive power and harmonic current simultaneously,making the traction power supply system is a three-phase symmetrical pure resistant load.According to matlab/simulink,it is proved that when regarding the real-tested traction load as the given load,the scheme can real-timely and dynamically compensate negative sequence,reactive and harmonic for improving power quality of electrified railway.
出处
《郑州大学学报（工学版）》
CAS
北大核心
2011年第5期117-120,共4页
Journal of Zhengzhou University（Engineering Science）
基金
国家科技支撑计划项目(2007BAA12B05)
关键词
电气化铁路
背靠背静止无功发生器
平衡变压器
电流平衡补偿
电能质量
electrified railway
back-to-back SVG（Static Var Generator）
balance transformer
current balance compensation
power quality
