Identifying Weak Transmission Lines in Power Systems with Intermittent Energy Resources and DC Integration

IF 3 4区工程技术 Q3 ENERGY & FUELS

Energies Pub Date : 2024-08-08 DOI:10.3390/en17163918

Anqi He, Jijing Cao, Shangwen Li, Lianlian Gong, Mingming Yang, Jiawei Hu

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引用次数: 0

Abstract

Nowadays, intermittent energy resources, such as wind turbines, and direct current (DC) transmission have been extensively integrated into power systems. This paper proposes an identifying method for weak lines of novel power systems with intermittent energy resources and DC lines integration, which aims to provide decision making for control strategies of novel power systems and prevent system blackouts. First, from the perspective of power system safety and stability, a series of risk indicators for the risk assessment of vulnerable lines is proposed. Then, lines in the system are tripped one by one. The calculation method for the proposed risk indicators is introduced. The impact of each line outage on system safety and stability can be fairly evaluated by these proposed risk indicators. On this basis, each risk assessment indicator is weighted to obtain a comprehensive risk assessment indicator, and then the risk caused by each line outage on the system can be quantified efficiently. Finally, the test system of a modified IEEE-39 bus system with wind farms and DC lines integration is used to verify the applicability of the proposed method, and the effectiveness of the proposed method is also demonstrated by comparing with existing methods.

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识别间歇性能源和直流集成电力系统中的薄弱输电线路

如今，风力涡轮机等间歇性能源和直流输电已广泛融入电力系统。本文提出了一种间歇性能源资源与直流线路集成的新型电力系统弱线识别方法，旨在为新型电力系统的控制策略提供决策依据，防止系统停电。首先，从电力系统安全稳定的角度出发，提出了一系列风险指标，用于对薄弱线路进行风险评估。然后，对系统中的线路进行逐一跳闸。介绍了所提风险指标的计算方法。通过这些建议的风险指标，可以公平地评估每条线路故障对系统安全性和稳定性的影响。在此基础上，对每个风险评估指标进行加权计算，得出综合风险评估指标，从而有效量化每条线路故障对系统造成的风险。最后，利用风电场与直流线路集成的改进型 IEEE-39 母线系统测试系统来验证所提方法的适用性，并通过与现有方法的比较来证明所提方法的有效性。

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

Energies ENERGY & FUELS-

CiteScore

6.20

自引率

21.90%

发文量

8045

审稿时长

1.9 months

期刊介绍： Energies (ISSN 1996-1073) is an open access journal of related scientific research, technology development and policy and management studies. It publishes reviews, regular research papers, and communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.