摘要
针对电气化铁路普遍存在电分相及电能质量问题,研究了单相组合式同相供电方案。采用改进的有功电流分离法及积分均值滤波器替代低通滤波器生成指令电流,以提高控制的准确性及动态速度。提出一种补偿式直流电压前馈控制方法,对高压匹配变压器的有功损耗进行补偿,使直流侧电压稳定在参考值。最后对该方案进行了仿真分析,验证了控制策略能够补偿负序、无功和谐波,使系统侧三相电流平衡,满足电能质量的要求。
In order to solve the problem of electric separation and power quality of electrified railway,the in-phase combined-phase power supply scheme was studied. An improved active current separation method and integral mean filter replacing the low pass filter were used to generate the command current in order to improve the accuracy and dynamic speed of the control. A kind of compensating DC voltage feedforward control method was proposed to compensate the reactive power loss of the high voltage matching transformer,and the DC side voltage was stabilized at the reference value. Finally,the simulation analysis was carried on to the scheme to verify that the control strategy can compensate reactive power and negative sequence and harmonic,make the system side three phase current balance and meet the requirements of power quality.
作者
牟晓春
孙西保
陶之晗
赵雪
李震
吴雪瑞
MOU Xiaochun;SUN Xibao;TAO Zhihan;ZHAO Xue;LI Zhen;WU Xuerui(NARI Technology Development Limited Company,Nanjing 210000,Jiangsu,China;School of Energy and Electrical Engineering,Hohai University,Nanjing 210000,Jiangsu,China;Spic Jiangsu Electric Power Co.,Ltd.,Nanjing 210000,Jiangsu,China;NARI Nanjing ControlSystem Co.,Ltd.,Nanjing 210000,Jiangsu,China;State Grid Electric Power Research Institute,Nanjing 210000,Jiangsu,China;School of Electrical Engineering,Henan Universityof Scienceand Technology.Luoyang 471023,Henan,China)
出处
《电气传动》
北大核心
2018年第7期92-96,共5页
Electric Drive
关键词
同相供电
控制策略
仿真分析
电能质量
前馈直流电压控制
in-phase power supply；control strategy；simulation analysis；power quality；feed-forward Dcvoltage control
