计及光伏和储能接入的牵引供电系统日前调度

doi:10.16183/j.cnki.jsjtu.2022.253

摘要/Abstract

摘要：

近年来,为实现电气化铁路“双碳”目标,多项铁路用能优化举措投入实施,但收效甚微.为进一步降低电气化铁路碳排放,改变其供能结构,将光伏和储能装置接入牵引供电系统.首先,构建复合牵引供电系统,并根据系统供能组成将其工况分类;其次,基于系统运行约束的轻重缓急设定优先级,并通过分层分级优化,实现不同运行工况下的系统最优状态;最后,通过合理优化变流器容量,实现系统运行性能和经济效益双赢下的最小碳排放.仿真结果表明,复合牵引供电系统保障系统稳定运行的同时,也大幅降低系统碳排放并实现性能最优.

关键词: 电气化铁路, 牵引供电系统, 光伏发电, 储能装置, 铁路碳排放

Abstract:

In recent years, in order to achieve the goal of “carbon peaking and carbon neutrality” of the electrified railway, a number of railroad energy optimization initiatives have been implemented, but with little success. To further reduce the carbon emissions of the electrified railway, its energy supply structure is changed by connecting photovoltaic and energy storage devices to the traction power supply system. First, the composite traction power supply system is constructed, and its working conditions are classified according to the composition of system energy supply. Then, the priorities are set based on the priorities of system operation constraints, and the optimal state of the system under different operating conditions is realized through hierarchical optimization. Finally, the converter capacity is reasonably optimized to achieve the minimum carbon emission under the win-win situation of the system operation performance and economic benefits. The simulation results show that the composite traction power supply system ensures the stable operation of the system while greatly reducing the carbon emission of the system and achieving the optimal performance.

Key words: electrified railway, traction power supply system, photovoltaic power generation, energy storage device, railway carbon emission

中图分类号:

U223.6

高锋阳, 宋志翔, 高建宁, 高翾宇, 杨凯文. 计及光伏和储能接入的牵引供电系统日前调度[J]. 上海交通大学学报, 2024, 58(5): 760-775.

GAO Fengyang, SONG Zhixiang, GAO Jianning, GAO Xuanyu, YANG Kaiwen. Day-Ahead Scheduling of Traction Power Supply System with Photovoltaic and Energy Storage Access[J]. Journal of Shanghai Jiao Tong University, 2024, 58(5): 760-775.

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储能分类	功率密度/ (W·kg^-1)	能量密度/ [(W·h)·kg^-1]	效率,η/%	单位成本	技术成熟度
飞轮储能	180~1800	5~50	90~95	250~350/(元·kW^-1)	试运行阶段
蓄电池	35~240	30~70	63~90	120~500/[元·(kW·h)^-1]	成熟
锂电池	500~3000	80~250	90~95	500~1200/[元·(kW·h)^-1]	成熟
超导电磁储能	10²~10⁵	1~10	90~98	200~700/(元·kW^-1)	研究阶段
电容储能	7000~18000	2.5~15	90~97	100~360/(元·kW^-1)	试运行阶段

形式	荷电状态/%
形式	健康	亚健康	不健康
充电	[20, 80]	(15, 20)∪(80, 85)	[0, 15]∪[85, 100]
放电	[25, 85]	(20, 25)∪(85, 90)	[0, 20]∪[90, 100]

系统方案	平均1 h碳排放量/kg	平均1 h变流器容量利用率/%	平均1 h系统综合性能(p.u.)
调度前	2229.9700	11.7175	0.8549
方案1	2576.3800	13.3592	0.8634
方案2	2259.5160	13.3135	0.8571
方案3	2256.3750	13.3992	0.8669