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arXiv 2109.01208math.OCcs.SYeess.SY
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辐射状配电系统中在线分布式Optimization:封闭形式的表达式

Online Distributed Optimization in Radial Power Distribution Systems: Closed-Form Expressions

Rabayet Sadnan, Tom Asaki, Anamika Dubey

摘要:

集中式最优化方法在管理配电系统操作中的局限性激发了分布式控制和优化算法。然而,现有的分布式优化算法是低效的管理快速变化的现象,导致高度可变的分布式能源(DER)。相关的在线分布式控制方法在其应用中同样受到限制。它们需要数千个时间步来跟踪网络级最优解,导致性能缓慢。我们以前开发了一个在线分布式控制器,利用系统的径向拓扑结构,实现网络级的最优解在几个时间步长。然而,它需要解决一个节点级的非线性规划问题在每个时间步。本文分析了节点级最优化问题的解空间,推导出了决策变量的解析封闭解。通过对节点级最优化问题的理论分析和得到的封闭形式的最优解,消除了在每个分布式代理处嵌入优化求解器的需要,显著降低了计算时间和优化成本。

英文摘要:

The limitations of centralized optimization methods in managing power distribution systems operations motivate distributed control and optimization algorithms. However, the existing distributed optimization algorithms are inefficient in managing fast varying phenomena, resulting from highly variable distributed energy resources (DERs). Related online distributed control methods are equally limited in their applications. They require thousands of time-steps to track the network-level optimal solutions, resulting in slow performance. We have previously developed an online distributed controller that leverages the system's radial topology to achieve network-level optimal solutions within a few time steps. However, it requires solving a node-level nonlinear programming problem at each time step. This paper analyzes the solution space for the node-level optimization problem and derives the analytical closed-form solutions for the decision variables. The theoretical analysis of the node-level optimization problem and obtained closed-form optimal solutions eliminate the need for embedded optimization solvers at each distributed agent and significantly reduce the computational time and optimization costs.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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