Quasi-dynamic optimal power sharing in isolated DC microgrids

IF 3.3 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Electric Power Systems Research Pub Date : 2024-11-15 DOI:10.1016/j.epsr.2024.111222

Alejandro Garcés-Ruiz , Walter Gil-González , Oscar Danilo Montoya

引用次数: 0

Abstract

This paper presents an optimization framework for solving the quasi-dynamic optimal power sharing problem in isolated DC microgrids. Said framework involves estimating the nodal-admittance matrix for a reduced model that includes nodes with inverter-based renewable resources. This estimation is not precise, so the uncertainty in the model is directly addressed in the optimization problem by incorporating robust constraints. Different properties of the estimation and optimization algorithms are mathematically studied, and the simulation results obtained in a test system are outlined, wherein the grid is represented by a full dynamic model and the optimization and control correspond to the proposed quasi-dynamic model. Both theoretical and simulation results demonstrate the high performance of the proposed framework.

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孤立直流微电网中的准动态优化功率共享

本文提出了一个优化框架，用于解决孤立直流微电网中的准动态优化功率共享问题。该框架包括估算一个缩小模型的节点导纳矩阵，该模型包括具有基于逆变器的可再生资源的节点。这种估算并不精确，因此模型中的不确定性将通过加入鲁棒约束直接在优化问题中得到解决。对估算和优化算法的不同特性进行了数学研究，并概述了在测试系统中获得的仿真结果，其中电网由全动态模型表示，优化和控制则与所提出的准动态模型相对应。理论和仿真结果都证明了拟议框架的高性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Electric Power Systems Research 工程技术-工程：电子与电气

CiteScore

7.50

自引率

17.90%

发文量

963

审稿时长

3.8 months

期刊介绍： Electric Power Systems Research is an international medium for the publication of original papers concerned with the generation, transmission, distribution and utilization of electrical energy. The journal aims at presenting important results of work in this field, whether in the form of applied research, development of new procedures or components, orginal application of existing knowledge or new designapproaches. The scope of Electric Power Systems Research is broad, encompassing all aspects of electric power systems. The following list of topics is not intended to be exhaustive, but rather to indicate topics that fall within the journal purview. • Generation techniques ranging from advances in conventional electromechanical methods, through nuclear power generation, to renewable energy generation. • Transmission, spanning the broad area from UHV (ac and dc) to network operation and protection, line routing and design. • Substation work: equipment design, protection and control systems. • Distribution techniques, equipment development, and smart grids. • The utilization area from energy efficiency to distributed load levelling techniques. • Systems studies including control techniques, planning, optimization methods, stability, security assessment and insulation coordination.