Research on Energy Utilization Scheme of Regenerative Braking for Heavy Haul Railway

doi:10.11985/2021.01.020

Abstract

Abstract:

As one of the important development directions of railroad, heavy-duty railroad transportation has the characteristics of high efficiency, low cost and large capacity. In recent years, while China heavy-duty railroad capacity has been increasing, it also makes the problem of energy consumption increasingly prominent. A hybrid energy storage based regenerative braking energy utilization scheme is proposed to realize the efficient utilization of regenerative braking energy for heavy-duty railroads by using the complementary performance of storage battery and supercapacitor. The load conditions of the line are analyzed with the measured data of the Shenshuo railroad, and an effective energy management strategy is designed for the hybrid energy storage system, and finally the economics of the system is evaluated based on the measured data. The analysis results verify the effectiveness of the proposed energy management strategy and the good economics of the regenerative braking energy utilization scheme.

Key words: Heavy-haul railway, regenerative braking energy, hybrid energy storage system, economy

CLC Number:

TM711

LIU Huawei, GENG Anqi, HE Zhengyou, HU Haitao, ZHANG Hongwei. Research on Energy Utilization Scheme of Regenerative Braking for Heavy Haul Railway[J]. Journal of Electrical Engineering, 2021, 16(1): 157-165.

Figures/Tables 19

References 20

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位置	110 kV侧返送有功功率的最大值/MW			110 kV侧返送有功功率的95%最大值/MW
位置	A相	B相	C相	A相	B相	C相
南梁	5.31	8.11	4.51	2.86	4.33	2.58
新城川	5.13	10.55	8.43	3.07	3.88	5.11
府谷	2.49	7.99	6.61	1.52	5.78	4.39

位置	27.5 kV侧返送有功功率的最大值/MW		27.5 kV侧返送再生能量次数/次		27.5 kV侧最大单次返送电量/(kW·h)
位置	左臂	右臂	左臂	右臂	左臂	右臂
南梁	12.72	6.87	148	1 580	804.09	359.45
新城川	9.82	13.14	450	231	453.43	1 733.98
府谷	4.98	15.35	48	454	69.83	2 034.29

电气量	U₁/kV	U₂/V	U₀/V	u_b(%)
最大值	69.12	3 658.00	2 224.80	5.51
平均值	67.77	1 196.30	750.33	1.77
最小值	65.92	7.72	7.10	0.01
99%最大值	68.64	2 821.67	1 555.95	4.23
95%最大值	68.44	2 153.77	1 335.69	3.20

相别	A	B	C	T1	T2
最大值/A	70.42	74.23	47.58	346.95	199.7
平均值/A	5.06	12.8	12.77	20.05	52.92
最小值/A	0.32	0.32	0.41	0.72	0.58
99%最大值/A	16.95	31.75	36.71	69.77	153.56
95%最大值/A	14.8	23.75	26.82	60.81	111.9

对象	指标	数值
蓄电池	功率成本系数/(元/kW)	2 000
	容量成本系数/[元/(kW·h)]	640
	循环寿命/次	3 000/100%DOD
超级电容器	功率成本系数/(元/kW)	500
	容量成本系数/[元/(kW·h)]	13 500
	循环寿命/次	100万
四象限变流器	功率/(万元/MW)	20
双向DC/DC	功率/(万元/MW)	15
电度电费	单位单价/ [元/(kW·h)]	0.487
基本电费(最大需量计费)	单位单价/ (元/kW)	40