Sustainable Energy Management for Microgrid Clusters Through a Two-Stage Strategy Using Shared Storage and Flexible Loads
- Publisher:
- Institute of Electrical and Electronics Engineers (IEEE)
- Publication Type:
- Conference Proceeding
- Citation:
- Conference Record IAS Annual Meeting IEEE Industry Applications Society, 2024, 00, pp. 1-6
- Issue Date:
- 2024-01-01
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The inherent intermittence of renewable generation and variable load demands present ongoing challenges in microgrids' reliable and efficient operation. In response, stakeholders and operators have turned to clustering the geographically adjacent microgrids as a solution. In this context, this paper introduces a two-stage energy management strategy for microgrid clusters by leveraging the capability of a shared battery energy storage system (SBES) to reduce operational costs and emissions while providing a spinning reserve to eliminate load shedding. In the primary stage, the proposed approach devises optimal day-ahead operation policies, while the second stage employs a cooperative strategy to further optimize the operational efficiency of the cluster. The energy management problem is accurately formulated as a mixed integer quadratic programming (MIQP) optimization, which incorporates linear terms in the problem's constraints. The formulation accounts for operational costs associated with BESS including expenses of charging/discharging and changes in operating states (CiOS). Additionally, a sensitivity analysis of installed SBES capacity is conducted. A case study with realworld data validates the efficacy of the proposed approach, with results indicating a minimum reduction of 2% in total operational costs, contingent upon the realizable flexibility and the shared battery system capacity.
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