基于RPC的混合储能接入双流制牵引供电系统协调运行方法

doi:10.19799/j.cnki.2095-4239.2023.0216

储能科学与技术 ›› 2023, Vol. 12 ›› Issue (9): 2862-2870.doi: 10.19799/j.cnki.2095-4239.2023.0216

基于RPC的混合储能接入双流制牵引供电系统协调运行方法

赵宏程¹(), 李再华², 赖俊宏³(), 陈垠宇³, 张波琦¹, 龚康华¹, 曾毅¹

^1.国网西藏电力有限公司电力科学研究院，西藏拉萨 850000
^2.中国电力科学研究院有限公司，北京 100192
^3.西南交通大学，四川成都 611730

收稿日期:2023-04-12 修回日期:2023-06-07 出版日期:2023-09-05 发布日期:2023-09-16
通讯作者: 赖俊宏 E-mail:zhaohc2010@sohu.com;1121351893@qq.com
作者简介: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；
基金资助:
国网西藏电力有限公司科技项目(XTB11202002104)

Coordinated operation method of RPC-based hybrid energy storage access dual-mode traction power supply system

Hongcheng ZHAO¹(), Zaihua LI², Junhong LAI³(), Yinyu CHEN³, Boqi ZHANG¹, Kanghua GONG¹, Yi ZENG¹

^1.State Grid Tibet Power Co. , Ltd. , Electric Power Research Institute, Lhasa 850000, Tibet, China
^2.China Electric Power Research Institute, Beijing 100192, China
^3.Southwest Jiaotong University, Chengdu 611730, Sichuan, China

Received:2023-04-12 Revised:2023-06-07 Online:2023-09-05 Published:2023-09-16
Contact: Junhong LAI E-mail:zhaohc2010@sohu.com;1121351893@qq.com

摘要/Abstract

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。

关键词: 混合储能, 双流制, 铁路功率调节器, 优化运行模型

Abstract:

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.

Key words: hybrid energy storage, dual-mode, railway power conditioner, optimal operation model

中图分类号:

TM 922.3

赵宏程, 李再华, 赖俊宏, 陈垠宇, 张波琦, 龚康华, 曾毅. 基于RPC的混合储能接入双流制牵引供电系统协调运行方法[J]. 储能科学与技术, 2023, 12(9): 2862-2870.

Hongcheng ZHAO, Zaihua LI, Junhong LAI, Yinyu CHEN, Boqi ZHANG, Kanghua GONG, Yi ZENG. Coordinated operation method of RPC-based hybrid energy storage access dual-mode traction power supply system[J]. Energy Storage Science and Technology, 2023, 12(9): 2862-2870.

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参数	单位	数值
U_AC	kV	27.5
U_DC	kV	1.5
S_AC-DC,cap	MVA	5
S_DC-DC,cap	MVA	3
S_3pAC-DC,cap	MVA	2

储能方式	原始电费	优化后电费	节费率	循环次数
超级电容器储能	6.14万元	5.06万元	-17.58%	98次
蓄电池储能		5.34万元	-13.02%	73次
混合储能		4.75万元	-22.64%	超级电容器96次，蓄电池8次

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基于RPC的混合储能接入双流制牵引供电系统协调运行方法

Coordinated operation method of RPC-based hybrid energy storage access dual-mode traction power supply system

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