Active power optimisation scheduling method for large-scale urban distribution networks with distributed photovoltaics considering the regulating capacity of the main network

IF 2.6 4区 工程技术 Q3 ENERGY & FUELS Frontiers in Energy Research Pub Date : 2024-08-29 DOI:10.3389/fenrg.2024.1450986
Cheng Gong, Wei Wang, Wenhan Zhang, Nan Dong, Xuquan Liu, Yechun Dong, Dongying Zhang
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Abstract

IntroductionWhen a distributed photovoltaic (PV) system has access to a large urban distribution network, the active balance is primarily borne by the main network gas unit; when the scale of the distributed PV system is very large, the main network can only provide limited regulation capacity, and the distribution network must determine the active optimal scheduling strategy.MethodsThis work proposes an active optimization scheduling model for the distribution network by considering the regulation capacity of the main network. In terms of the optimisation objectives, the maximum consumption of the distributed PVs and minimum power fluctuation at the demarcation point of the main distribution network are proposed as the main objectives, while the minimum total exchanged power in a cycle at the main distribution demarcation point and minimum distribution network loss are considered as the secondary objectives. In terms of constraints, it is proposed that the main network’s regulation capacity be characterized by the main network’s gas-fired unit creep constraints. A fast solution method for active optimization of the distribution network is designed herein to formulate the priority control order of the adjustable units according to the dispatch economic performances of various types of adjustable resources in the distribution network; this reduces the number of variables involved in the optimization at each step and improves the optimized solution speed.ResultsFinally, Simulation verification by IEEE 33-node distribution network arithmetic example based on Matlab simulation platform.DiscussionSimulation results show the effectiveness of the method in achieving maximum PV consumption and reflecting the limited regulation capacity of the main grid.
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考虑主网调节能力的大规模分布式光伏城市配电网有功功率优化调度方法
引言当分布式光伏系统接入大型城市配电网时,有功平衡主要由主网燃气机组承担;当分布式光伏系统规模非常大时,主网只能提供有限的调节能力,配电网必须确定有功优化调度策略。在优化目标方面,提出以分布式光伏的最大消耗量和主配电网分界点的最小功率波动为主要目标,以主配电网分界点一个周期内的最小总交换功率和最小配电网损耗为次要目标。在约束条件方面,建议主网调节能力以主网燃气机组爬坡约束条件为特征。本文设计了一种配电网主动优化的快速求解方法,根据配电网中各类可调资源的调度经济性,制定可调机组的优先控制顺序,减少了每一步优化所涉及的变量数量,提高了优化求解速度。最后,基于 Matlab 仿真平台,通过 IEEE 33 节点配电网算例进行了仿真验证。
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
Frontiers in Energy Research
Frontiers in Energy Research Economics, Econometrics and Finance-Economics and Econometrics
CiteScore
3.90
自引率
11.80%
发文量
1727
审稿时长
12 weeks
期刊介绍: Frontiers in Energy Research makes use of the unique Frontiers platform for open-access publishing and research networking for scientists, which provides an equal opportunity to seek, share and create knowledge. The mission of Frontiers is to place publishing back in the hands of working scientists and to promote an interactive, fair, and efficient review process. Articles are peer-reviewed according to the Frontiers review guidelines, which evaluate manuscripts on objective editorial criteria
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