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电力大数据:2024,27(2):-
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基于全生命周期管理的离网型风光储交流微电网的双层优化调度策略
徐婷婷1, 吴迪凡1, 王晨杰1, 王佳睿1, 韩钰1, 陈润田2
(1.国网上海市北供电公司;2.国网上海电缆公司)
Bi-level Optimal Dispatching Strategy for Off-grid Wind-Solar-Storage AC Microgrid Based on Whole Life Cycle Management
XU Tingting1, WU Difan1, WANG Chenjie1, WANG Jiarui1, HAN Yu1, CHEN Runtian2
(1.State Grid Shibei Power Supply Company,SMEPC;2.State Grid Shanghai Cable Company)
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投稿时间:2024-04-10    修订日期:2024-04-18
中文摘要: 本文为离网型交流微电网设计了双层调度策略,即经济最优化日前调度和日内稳定运行实时调度。在日前以微电网经济性运行为目标,利用全生命周期理论建立经济模型,并计及储能电池荷电状态(State of Charge, SOC)对寿命的影响;在日后以供电稳定性为目标,充分考虑预测误差给系统带来的可能性崩溃,利用储能PQ源实时修正VF源的功率偏差,改善储能VF源的工作状态。通过算例仿真,得到微电网经济稳定运行的综合优化调度方案,验证了该策略的有效性和合理性。
Abstract:This paper designs a bi-level dispatch strategy for an off-grid AC microgrid, namely, economic optimization for day-ahead scheduling and real-time dispatch for stable operation within the day. In the day-ahead stage, the objective is the economical operation of the microgrid, utilizing whole life cycle theory to establish an economic model, and taking into account the impact of the battery’s State of Charge (SOC) on its lifespan. For the day-of operation, the goal is supply stability, fully considering the potential system collapse due to forecast errors and using the energy storage’s PQ source to real-time correct power deviations of VF sources, thus improving the working state of storage VF sources. Through simulation examples, a comprehensive optimization dispatch scheme for the economic and stable operation of the microgrid is obtained, verifying the effectiveness and rationality of the strategy.
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