Optimal configuration for shared energy storage based on improved whale optimization algorithm

doi:10.3969/j.issn.2097-0706.2023.09.009

Abstract

Abstract:

Since energy storage resources always be left unused and lack proper business modes in the renewable energy consumption，an optimal allocation method of shared energy storage based on improved whale optimization algorithm（WOA） is proposed to match the power capacity of energy storage systems to new energy consumption target. Taking sharing mode for energy storage on power generation side，this method considers the investment， operation and maintenance costs and benefits of the energy storage system assisting renewable energy consumption，under the constraints of its operation and grid-connected power. Combined the renewable energy output with grid-connected power，an optimal configuration model aiming at maximizing the revenue of the shared energy storage system is established，and solved by improved WOA. The contrastive analysis on examples shows that energy storage sharing can improve the consumption rate of new energy and the return on investment of energy storage systems. Compared with independent energy storage， energy storage sharing mode improves the utilization rate and economy of energy storage devices，and adjustment ability on new energy consumption，which can effectively make up for the grid-connected power shortage caused by new energy generation. Large-scale investment in shared energy storage systems is promising.

Key words: renewable energy consumption, energy storage sharing, optimal configuration, power generation side, improved whale optimization algorithm, power shortage

CLC Number:

TK01

LI Qinggen, SUN Na, DONG Haiying. Optimal configuration for shared energy storage based on improved whale optimization algorithm[J]. Integrated Intelligent Energy, 2023, 45(9): 65-76.

Figures/Tables 15

Fig.1

Fig.2

Table 1

Parameters of centralized shared energy storage system

参数	值
单位功率投资成本 $c P$ /(万元·MW^-1)	40
单位容量投资成本 $c E$ /[万元·(MW·h)^-1]	70
基准折现率 $r$ /%	0.5
共享储能电站运行寿命 $n$ /a	10
共享储能电站运行维护系数 $ζ$ /%	6
充放电效率 $η E S S, c$ ， $η E S S, d$	0.95,0.95

Table 1

Fig.3

Fig.4

Fig.5

Fig.6

Table 2

Fig.7

Fig.8

Table 3

Fig.9

Fig.10

Fig.11

Fig.12

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类型	功率/MW	容量/（MW·h）	配置成本/(万元·a^-1)
光伏电站1	15	90	631.79
光伏电站2	15	90	631.79
风电场	27	162	1 137.22
总计	57	342	2 400.80

序号	功率/MW	容量/(MW·h)	储能配比/%	消纳率/%	配置成本/(万元·a^-1)
1	56.37	302.54	14.83	95.52	2 180.35
2	56.37	324.64	14.83	96.00	2 300.44
3	56.37	370.85	14.83	97.00	2 551.59
4	56.37	417.06	14.83	98.00	2 802.73
5	60.94	462.70	16.04	99.00	3 094.20
6	80.59	508.91	21.21	100.00	3 532.30