Interactive Operation Strategy for Multi-scenario County-Level Multi-microgrid Based on ADMM

doi:10.11930/j.issn.1004-9649.202308065

Abstract

Abstract:

Under the guidance of the "double carbon" goal, renewable energy has witnessed rapid growth in accommodation demand. In order to realize the complementary advantages of microgrid and renewable energy in the county and improve the accommodation rate of renewable energy, a ADMM-based interactive operation strategy for multi-scenario county-level multi-microgrid is proposed. Firstly, a scheduling model for independent microgrid operation is established to realize the optimal scheduling strategy in the day-ahead pre-scheduling plan. Secondly, a multi-microgrid energy interactive operation model is established, which is iteratively solved with the ADMM algorithm to obtain the global interactive energy between microgrids. Finally, the Shapley value method is used to allocate the benefits of the microgrid group and reduce the system operation cost of each sub-microgrid. The case study shows that the proposed method can not only improve the accommodation rate of renewable energy and realize the economy, but also reduce carbon emissions and realize low-carbon operation.

Key words: multi-microgrid, multi-scenario, cascade carbon trading, ADMM, Shapley

Chongbiao ZHANG, Chenwen QIAN, Hongyan YU, Yanling PENG, Jinwei CHEN. Interactive Operation Strategy for Multi-scenario County-Level Multi-microgrid Based on ADMM[J]. Electric Power, 2024, 57(2): 9-18.

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URL: https://www.electricpower.com.cn/EN/10.11930/j.issn.1004-9649.202308065

https://www.electricpower.com.cn/EN/Y2024/V57/I2/9

Figures/Tables 9

Fig.1 Interconnected interactive framework structure of microgrid group in county network element area

Fig.2 Optimal scheduling process

Fig.3 Load curves of microgrid group

Fig.4 Renewable energy forecast output

Table 1 The cost of each microgrid under three different operating modes

场景	运行成本/元				微电网群碳排放量/kg
场景	微网1	微网2	微网3	微网群	微电网群碳排放量/kg
1	8586.5	13016.7	10513.9	32117.1	18120.4
2	7794.3	13418.1	10480.9	31693.3	17673.2
3	10240.2	9035.4	5851.9	25127.5	11008.2

Fig.5 Cost convergence

Fig.6 Energy interaction results between microgrids

Fig.7 The output of each microgrid unit after optimal scheduling

Table 2 The actual operating cost of each microgrid after Shapley benefit allocation

运行方式	运行成本/元
运行方式	微电网1	微电网2	微电网3	合计
微网1、2、3独立运行	8586.5	13016.7	10513.9	32117.1
微电网1、2、3联合运行	10240.2	9035.4	5851.9	25127.5
Shapley法分配后微电网 1、2、3联合运行	5488.4	10338.8	9300.3	25127.5

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