Optimal Allocation of Hybrid Energy Storage in Low-Voltage Distribution Networks with Incentive-based Demand Response

doi:10.11930/j.issn.1004-9649.202312032

Abstract

Abstract:

With the high penetration rate of distributed photovoltaic access and the promotion of re-electrification and electrical energy substitution, the volatility of the system source and load is intensified, and the traditional distribution network planning methods are difficult to adapt to the requirements of the new power system development. To address this problem, an optimal allocation model for hybrid energy storage in low-voltage distribution networks considering incentive-based demand response is firstly established. Then, based on the characteristics of energy storage devices and incentive-based demand-side response resources at different time scales, it is proposed to use the improved VMD algorithm to make a multi-scale decomposition and combined reconstruction of the net load curves, and the improved whale optimization algorithm is used to solve the optimal allocation model with the objective of the minimum sum of the total system cost and active power fluctuation value. Finally, the effectiveness of the proposed scheme is verified with practical examples.

Key words: low-voltage power distribution network, incentive-based demand response, optimal allocation of hybrid energy storage, improved VMD algorithm, improved whale optimization algorithm

Fengliang XU, Keqian WANG, Wenhao WANG, Peng WANG, Wenye WANG, Shuai ZHANG, Fengzhan ZHAO. Optimal Allocation of Hybrid Energy Storage in Low-Voltage Distribution Networks with Incentive-based Demand Response[J]. Electric Power, 2024, 57(6): 90-101.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202312032

https://www.electricpower.com.cn/EN/Y2024/V57/I6/90

Figures/Tables 11

References 36

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布置方式	成本效益	系统效率	可靠性与稳定性	环境影响
集中	集中布置通常涉及较高的初始投资成本，但由于规模经济效应，单位储能成本可能较低	可能由于长距离传输和分布损耗而受影响	中心化管理可能提高系统的控制精度和稳定性	集中布置可能导致局部环境影响加剧
分散	分散布置可能降低初始投资成本，但单位储能成本由于缺乏规模经济效应可能较高	更接近负荷点，减少传输损失，可能提高整体效率	分散布置可提高系统的冗余性和抗风险能力	分散布置可能减少对单一地点的环境影响

布置方式	成本效益	系统效率	可靠性与稳定性	环境影响
集中	集中布置通常涉及较高的初始投资成本，但由于规模经济效应，单位储能成本可能较低	可能由于长距离传输和分布损耗而受影响	中心化管理可能提高系统的控制精度和稳定性	集中布置可能导致局部环境影响加剧
分散	分散布置可能降低初始投资成本，但单位储能成本由于缺乏规模经济效应可能较高	更接近负荷点，减少传输损失，可能提高整体效率	分散布置可提高系统的冗余性和抗风险能力	分散布置可能减少对单一地点的环境影响

储能系统	单位功率成本k₁/ (元·kW^–1)	单位容量成本k₂/ (元·(kW·h)^–1)	单位容量运维成本k₃/ (元·(kW·h)^–1)	效率/ %	使用年限	SOC 初始值	SOC 范围
超级电容	450	11500	0.05	95	12	0.5	0.1~0.9
磷酸铁锂电池	5000	2500	0.05	90	8	0.5	0.2~0.8

储能系统	单位功率成本k₁/ (元·kW^–1)	单位容量成本k₂/ (元·(kW·h)^–1)	单位容量运维成本k₃/ (元·(kW·h)^–1)	效率/ %	使用年限	SOC 初始值	SOC 范围
超级电容	450	11500	0.05	95	12	0.5	0.1~0.9
磷酸铁锂电池	5000	2500	0.05	90	8	0.5	0.2~0.8

类型	电价/(元·(kW·h)^–1)
类型	峰	谷	平
购电	0.8	0.37	0.55
DCL	1.8	0.37	0.55
NDCL	1.3	0.37	0.55