计及列车节能运行影响的城轨储能系统最优化容量配置  

Optimal capacity configuration of urban railway energy storage system considering energy-saving operation effect

作　　者：罗川川 马兴 刘锦洋 管勃 LUO Chuanchuan;MA Xing;LIU Jinyang;GUAN Bo(School of Electrical Engineering,Chongqing University,Chongqing 400044,China;Electric Power Science Research Institute,State Grid Chongqing Electric Power Company,Chongqing 401121,China)

机构地区：[1]重庆大学电气工程学院,重庆400044 [2]国网重庆市电力公司电力科学研究院,重庆401121

出　　处：《电工电能新技术》2024年第9期11-22,共12页Advanced Technology of Electrical Engineering and Energy

基　　金：国网重庆市电力公司科技项目(SGCQDK00DWJS2200217)、国家自然科学基金项目(52107178)。

摘　　要：优化设计列车运行曲线并合理配置超级电容储能是解决城轨牵引供电系统能量损耗大、功率冲击显著的有效方案。列车运行曲线会直接决定列车的当前运行状态,一方面通过调整牵引电机的工作效率改变供电系统的整体能耗,一方面通过调节列车牵引过程与再生制动过程间的功率差优化储能容量配置。考虑到以上两方面因素的相互制约,本文提出了一种综合的城轨储能系统最优化容量配置方法,旨在兼顾列车节能运行和降低储能容量。首先,利用列车运行的数学模型建立考虑牵引电机工作效率变化的列车能耗函数。然后,考虑多车运行时的能量交互确定列车牵引与再生制动间的功率差函数。进而,重新构建固定时分下考虑系统综合能耗与储能容量的复合经济指标的目标函数。最后,采用遗传算法和粒子群算法相结合的优化算法,得到列车的最优运行曲线。算例分析表明,基于本文优化方法得到的列车运行曲线能够在节能的同时大幅降低超级电容的配置容量。Optimizing the design of train operation curve and reasonably configuring super-capacitor energy storage is an effective solution to the high energy loss and significant power impact of urban railway traction power supply system.The train operation curve will directly determine the current operation status of the train,and change the overall energy consumption of the power supply system by adjusting the efficiency of the motor on the one hand,and influence the optimal capacity configuration of the energy storage by adjusting the power difference between the traction process and regenerative braking process of the train on the other hand.Considering the mutual constraints of the above two factors,this study proposes a comprehensive method for optimal capacity configuration of urban railway energy storage system,aiming at both energy-saving operation and reduction of energy storage capacity.Firstly,the mathematical model of train operation is used to establish the energy consumption function considering the variation of motor efficiency.Then,the power difference function between traction and regenerative braking is determined considering the energy interaction during multi-vehicle operation.Further,the composite cost function containing fixed time minutes,comprehensive energy consumption of the system,and energy storage capacity is reconstructed,and the operation curve is optimized based on an improved particle swarm algorithm.Finally,given that the composite cost function involves different physical quantity,the influence of each economic factor on the optimization objective is studied in depth.The examples show that the operation curve obtained based on the optimization method of this study can significantly reduce the configuration capacity of super-capacitor while saving energy.

关 键 词：储能系统 容量配置 再生制动 牵引电机 

分 类 号：TM922[电气工程—电力电子与电力传动]