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| Research on Intra-Day Dispatch of Multi-Connected Microgrids Based on Hybrid Energy Storage |
| Yan Ning1, Pan Xiao2, Zhang Mingli2, Ma Shaohua1, Li Wei1, Zhang Bo1 |
1. School of Electrical Engineering Shenyang University of Technology Shenyang 110870 China;
2. State Grid Liaoning Electric Power Company Limited Economic Research InstituteShenyang 110015 China |
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Abstract Energy storage system is an important unit for the economic dispatch of multi- connected microgrids, according to the demand for energy storage systems in multi-connected microgrids, a rolling dispatch method of multi-connected microgrids based on hybrid energy storage is proposed. Firstly, the influence of the uncertainty of distributed power supply on the microgrid-level economic dispatch decision is considered, a SOC security margin constrained scheduling method based on life degradation model is also proposed, it effectively prolongs the operating life of the energy storage system; Secondly, a distributed energy output cost model of energy storage system is established, the cost penalty factor with insufficient capacity is also added to further improve the accuracy of scheduling; Finally, the rolling dispatch method is used to effectively regulate the reserve capacity of the entire multi-connected microgrids, the accuracy of multi-connected microgrids intra-day scheduling is more accurately improved.
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Received: 01 July 2018
Published: 15 February 2019
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2018, Vol. 33 
