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Coordinated Energy Management of Networked Microgrids in Distribution Systems

机译：配电系统中联网微电网的协调能源管理

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摘要

This paper proposes a novel control strategy for coordinated operation of networked microgrids (MGs) in a distribution system. The distribution network operator (DNO) and each MG are considered as distinct entities with individual objectives to minimize the operation costs. It is assumed that both the dispatchable and nondispatchable distributed generators (DGs) exist in the networked MGs. In order to achieve the equilibrium among all entities and take into account the uncertainties of DG outputs, we formulate the problem as a stochastic bi-level problem with the DNO in the upper level and MGs in the lower level. Each level consists of two stages. The first stage is to determine base generation setpoints based on the load and nondispatchable DG output forecasts and the second stage is to adjust the generation outputs based on the realized scenarios. A scenario reduction method is applied to enhance a tradeoff between the accuracy of the solution and the computational burden. Case studies of a distribution system with multiple MGs of different types demonstrate the effectiveness of the proposed methodology. The centralized control, deterministic formulation, and stochastic formulation are also compared.
机译：本文提出了一种用于配电系统中的网络微电网（MGs）协同运行的新型控制策略。配电网络运营商（DNO）和每个MG被视为具有各自目标的不同实体，以最大程度地降低运营成本。假定可联网的MG中同时存在可调度和不可调度的分布式生成器（DG）。为了实现所有实体之间的平衡并考虑到DG输出的不确定性，我们将该问题表述为一个随机的两级问题，上级DNO，下级MG。每个级别包括两个阶段。第一阶段是基于负荷和不可分派的DG输出预测确定基本发电设定点，第二阶段是基于已实现的方案调整发电输出。应用场景减少方法来增强解决方案的准确性和计算负担之间的权衡。具有多个不同类型的MG的分配系统的案例研究证明了所提出方法的有效性。还比较了集中控制，确定性公式和随机公式。

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