摘要
双流制线路实现了25 kV交流供电制式市域(郊)铁路与1500 V直流供电制式城市地铁的跨线运行和互联互通,成为助力轨道交通高效节能运行的重要手段。然而,双流制牵引供电系统间存在的制式壁垒制约着系统能流高效利用,造成大量列车再生能量难以完全利用,电费成本不断增加。本文提出一种集成混合储能的铁路功率调节器(railway power conditioner,RPC)拓扑及其优化运行模型,以双流制牵引供电系统电费成本最低为优化目标,以功率平衡、变流器容量、储能装置容量与荷电状态为约束条件,以混合储能装置充放电策略、RPC端口潮流调控方法为决策变量,实现交流制市域(郊)铁路与直流制地铁之间的能量高效调控。优化结果表明:相较于既有双流制牵引供电系统,本文所提出方案可以降低牵引变电所的用电量和需量功率,总电费的节费率为22.64%,验证了所提出协调运行方法的有效性。
The dual-mode railway line realizes the crossline operation and interconnection between the 25 kV AC power supply system of the urban(suburban)railway and the 1500 V DC power supply system of the urban metro,which is an essential means to help the efficient and energy-saving operation of rail transit.However,the mode barriers between the dual-mode traction power supply systems restrict the efficient utilization of the system's energy flow,resulting in a large number of train renewable energy that is difficult to fully utilize;therefore,the electricity cost continues to increase.This paper presents a topology of the railway power conditioner(RPC)based on hybrid energy storage,taking the lowest electric cost of a dual-mode traction power supply system as the optimization objective.In addition,power balance,converter capacity,the capacity of the energy storage device,and state of charge were considered the constraint condition.With the charging and discharging strategy of the hybrid energy storage device and the power flow control method of the RPC port as decision variables,the energy efficient regulation and control between the AC system suburban railway and the DC system subway was realized.The optimization results showed that compared with the existing dual mode traction power supply system,the proposed scheme could reduce the power consumption and maximum power demand of the traction substation,and the total cost-saving rate was 22.64%,verifying the effectiveness of the proposed coordinated operation method.
作者
赵宏程
李再华
赖俊宏
陈垠宇
张波琦
龚康华
曾毅
ZHAO Hongcheng;LI Zaihua;LAI Junhong;CHEN Yinyu;ZHANG Boqi;GONG Kanghua;ZENG Yi(State Grid Tibet Power Co.,Ltd.,Electric Power Research Institute,Lhasa 850000,Tibet,China;China Electric Power Research Institute,Beijing 100192,China;Southwest Jiaotong University,Chengdu 611730,Sichuan,China)
出处
《储能科学与技术》
CAS
CSCD
北大核心
2023年第9期2862-2870,共9页
Energy Storage Science and Technology
基金
国网西藏电力有限公司科技项目(XTB11202002104)。
关键词
混合储能
双流制
铁路功率调节器
优化运行模型
hybrid energy storage
dual-mode
railway power conditioner
optimal operation model
作者简介
第一作者:赵宏程(1986-),男,硕士,高级工程师,研究方向为电力系统运行技术,E-mail:zhaohc2010@sohu.com;通讯作者:赖俊宏,男,硕士,研究方向为电力系统运行技术,E-mail:1121351893@qq.com。
