Dynamic line rating and optimal transmission switching for maximizing renewable energy sources injection with voltage stability constraint

IF 10.1 1区工程技术 Q1 ENERGY & FUELS

Applied Energy Pub Date : 2024-10-30 DOI:10.1016/j.apenergy.2024.124651

Ke Wu , Lei Wang , Hengxu Ha , Zhiyuan Wang

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引用次数: 0

Abstract

Renewable energy sources (RES), such as wind and photovoltaic, has been widely integrated into power systems. However, the phenomenon of “wind curtailment” and “sunlight curtailment” is still a critical issue, resulting in the sharp decline of renewable resource utilization. The factors of reducing the renewable resources injection are the limited line thermal capacity, voltage magnitude limit, and voltage stability issues. This paper presents a maximizing RES injection (MRI) problem with voltage stability constraints, AC power flow constraints and operating constraints. A novel dynamic line rating (DLR) technique is proposed for dynamically assessing transmission line capacity of transmission line. By jointly DLR and optimal transmission switching (OTS), the proposed model’s solution can maximize power network’s transmission capacity and ensure the technique and physical operation requirements of power systems. Due to the difficulty in solving the proposed model, a prescreening technique is presented to screen out the ineffective lines by three indicators. The proposed approach has been applied to the IEEE 24-bus RTS system, the IEEE 118-bus power system, and the IEEE 3120-bus power system. The computational results show the effectiveness of the conducted model in maximizing the utilization of RES and improving the acceptable level of power grid for renewable resources.

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动态线路额定值和优化输电切换，在电压稳定约束条件下实现可再生能源注入最大化

风能和光伏等可再生能源（RES）已广泛融入电力系统。然而，"风力削减 "和 "阳光削减 "现象仍是一个关键问题，导致可再生资源利用率急剧下降。减少可再生资源注入的因素包括线路热容量有限、电压幅值限制和电压稳定性问题。本文提出了一个具有电压稳定性约束、交流功率流约束和运行约束的最大化可再生资源注入（MRI）问题。本文提出了一种新颖的动态线路额定值（DLR）技术，用于动态评估输电线路的输电线路容量。通过联合使用 DLR 和优化输电切换（OTS），所提出模型的解决方案可以最大限度地提高电网的输电容量，并确保电力系统的技术和物理运行要求。由于所提模型的求解难度较大，因此提出了一种预筛选技术，通过三个指标筛选出无效线路。提出的方法已应用于 IEEE 24 总线 RTS 系统、IEEE 118 总线电力系统和 IEEE 3120 总线电力系统。计算结果表明，所建立的模型在最大限度地利用可再生资源和提高电网对可再生资源的可接受程度方面非常有效。

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

Applied Energy 工程技术-工程：化工

CiteScore

21.20

自引率

10.70%

发文量

1830

审稿时长

41 days

期刊介绍： Applied Energy serves as a platform for sharing innovations, research, development, and demonstrations in energy conversion, conservation, and sustainable energy systems. The journal covers topics such as optimal energy resource use, environmental pollutant mitigation, and energy process analysis. It welcomes original papers, review articles, technical notes, and letters to the editor. Authors are encouraged to submit manuscripts that bridge the gap between research, development, and implementation. The journal addresses a wide spectrum of topics, including fossil and renewable energy technologies, energy economics, and environmental impacts. Applied Energy also explores modeling and forecasting, conservation strategies, and the social and economic implications of energy policies, including climate change mitigation. It is complemented by the open-access journal Advances in Applied Energy.