一种线损最小的能馈电压阈值动态调整算法  

An Algorithm of Voltage Threshold Dynamic Adjustment for Regenerative Energy Inverter with Minimum Line Power Loss

作　　者：张超 李红波 郑财晖 黄子昊 罗文广 刘华东 ZHANG Chao;LI Hongbo;ZHENG Caihui;HUANG Zihao;LUO Wenguang;LIU Huadong(CRRC Zhuzhou Institute Co.,Ltd.,Zhuzhou,Hunan 412001,China;CRRC Changchun Railway Vehicle Co.,Ltd.,Changchun,Jilin 130062,China)

机构地区：[1]中车株洲电力机车研究所有限公司,湖南株洲412001 [2]中车长春轨道客车股份有限公司,吉林长春130062

出　　处：《控制与信息技术》2020年第5期25-29,共5页CONTROL AND INFORMATION TECHNOLOGY

基　　金：国家重点研发计划(2017YFB1201003)。

摘　　要：目前轨道交通牵引供电系统能馈电压阈值采用固定模式,导致制动能量利用不充分。文章提出一种线损最小的能馈电压阈值动态调整算法,其采用网对轨电压潮流算法,将计算模型中钢轨上电阻转移至牵引电网上,构建供电区间内线损最小优化模型,并将优化模型转化为椭圆与直线的位置问题进行求解,以得到供电区间线损最小时的能馈电压阈值;针对上行、下行或连续供电区间内存在制动列车的情况提出一种统一控制策略。最后,利用长沙轨道交通2号线数据,仿真验证了所提方法的有效性,其节能效果明显。Aiming at the fact that present transit traction power supply system with fixed voltage threshold of regenerative energy inverter cannot effectively use braking energy,this paper presents an algorithm of voltage threshold dynamic adjustment for regenerative energy inverter with minimum line power loss.On-rail resistance is transferred to traction network by network-to-rail voltage algorithm,and a minimum optimization model of line power loss in the power supply range is constructed to minimize the line power loss.By transforming the optimization model into the position problem of an ellipse and a line,the threshold voltage of regenerative energy inverters is obtained by tangent of the ellipse and the line.The situation when the train is braked in the uplink,downlink or continuous power supply range is also considered and a processing strategy is proposed.Changsha Metro 2 line data simulation analysis verifies the energy saving effect of the proposed method.

关 键 词：能馈装置 线损 电压阈值 网对轨电压 节能 

分 类 号：U231.8[交通运输工程—道路与铁道工程]