Decentralized Peer-to-peer Trading Strategy Considering Flexibility of Multiple Microgrids

doi:10.11930/j.issn.1004-9649.202411059

Abstract

Abstract:

Active distribution network dominated by renewable energy need to incentivize the participation of various distributed energy resources to enhance system flexibility. To address the power fluctuation problems caused by the large-scale access of renewable energy, this paper firstly introduced a shared energy storage system (SESS) and a peer to peer (P2P) energy trading mechanism, with full consideration of the interactions between active distribution networks and microgrids (MG), and investigated the multi-MG power fluctuation mitigation strategy and the P2P flexibility trading strategy based on SESS leasing. Secondly, a multi-MG revenue allocation mechanism based on asymmetric Nash bargaining was proposed and a nonlinear energy mapping function was used for evaluating each MG's contribution in order to attain fair allocation of cooperative revenue. Finally, the proposed model was solved distributively using the alternating direction method of multipliers (ADMM), effectively protecting information security for all stakeholders. The effectiveness of the proposed method was then demonstrated through comparative case studies.

Key words: microgrids, flexibility, asymmetric Nash bargaining, peer-to-peer trading

HUANGFU Xiaowen, LI Ke, XU Changqing, JIANG Xiaoliang, YU Haozheng, WANG Rujing. Decentralized Peer-to-peer Trading Strategy Considering Flexibility of Multiple Microgrids[J]. Electric Power, 2025, 58(9): 194-204, 218.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202411059

https://www.electricpower.com.cn/EN/Y2025/V58/I9/194

Figures/Tables 12

References 26

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MG	租赁成本/ 元	租赁前净负荷均方差/kW²	租赁后净负荷均方差/kW²
1	1273.5	9.42×10⁶	4.99×10⁶
2	1157.3	3.44×10⁶	7.62×10⁵
3	1110.6	6.83×10⁶	4.41×10⁶

MG	租赁成本/ 元	租赁前净负荷均方差/kW²	租赁后净负荷均方差/kW²
1	1273.5	9.42×10⁶	4.99×10⁶
2	1157.3	3.44×10⁶	7.62×10⁵
3	1110.6	6.83×10⁶	4.41×10⁶

MG	参与P2P 交易时微电网运行成本	参与P2P 交易时纳什议价收益	参与P2P 交易时微电网总成本	不参与P2P 交易时微电网总成本	收益提升值
1	3759.39	1172.95	2586.44	3269.33	682.88
2	3604.19	–928.16	4532.36	5215.18	682.81
3	2252.52	–244.59	2497.12	3180.00	682.87

MG	参与P2P 交易时微电网运行成本	参与P2P 交易时纳什议价收益	参与P2P 交易时微电网总成本	不参与P2P 交易时微电网总成本	收益提升值
1	3759.39	1172.95	2586.44	3269.33	682.88
2	3604.19	–928.16	4532.36	5215.18	682.81
3	2252.52	–244.59	2497.12	3180.00	682.87

MG	非对称议价因子	参与P2P交易时纳什议价收益/元	参与P2P交易时MG 总成本/元	收益提升值/元	电能贡献量/(kW·h)
1	2.1595	1672.22	2087.17	1182.15	2807.0
2	0.6974	–1229.09	4833.29	381.89	–1650.7
3	0.8860	–442.40	2694.93	485.07	–1156.4