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ORIGINAL RESEARCH article

Front. Energy Res.
Sec. Sustainable Energy Systems
Volume 12 - 2024 | doi: 10.3389/fenrg.2024.1532146
This article is part of the Research Topic Advanced Technologies for High-quality Development of Distribution Systems with Distributed Energy Resources View all articles

An Evaluation Method for Power Supply Guarantee Capability of Multi-City Interconnected Power System Based on Security Region

Provisionally accepted
Zhihong Liu Zhihong Liu *Yunyao Chen Yunyao Chen Yaoxia Du Yaoxia Du Yang Luo Yang Luo
  • State Grid Tibet Electric Power Co., Ltd., Lhasa, 850000, Tibet, China, Lhasa, China

The final, formatted version of the article will be published soon.

    In the context of global climate change, the multi-city interconnected power system offers the possibility of low-carbon and efficient energy utilization. However, the key challenge lies in how to ensure the safety and stability of power supply, meet the diverse demands of different cities, and at the same time reduce carbon emissions. This paper proposes a method for evaluating the power supply guarantee capability of a multi-city interconnected power system based on the security region. Firstly, based on the security region, an architecture considering the collaborative support role of multiple city systems is established to characterize the low-carbon feasible space of each city system and tap the collaborative support potential of multiple city systems. Then, a security region model of the city system is constructed. By using the model transformation and solution methods of the security region theory, combined with the multi-dimensional piecewise linear approximation method. The low-carbon feasible space of the city system is analytically represented. Finally, considering the collaborative support role of multiple city systems, a scheduling model and a model transformation method for the provincial power grid are constructed. Case studies demonstrate that this method effectively enhances power supply security while also achieving a 7.21% decrease in system operating costs and a 24.7% decrease in carbon emissions. source (Li et al., 2024). As the share of renewable energy continues to increase, the volatility and uncertainty of the power system grow, setting higher requirements for the system's power supply capability(A Review of Power System Flexibility With High Penetration of Renewables | IEEE Journals & Magazine | IEEE Xplore, n.d.). To address this challenge, a multi-city interconnected power system has demonstrated significant potential for achieving the reliability of power supply and more efficient energy utilization.In multi-city interconnected power systems, ensuring the reliability of power supply is essential for maintaining stable electricity provision across cities. Existing research on power supply guarantee capability primarily emphasizes network structure optimization (miao et al.

    Keywords: Security region, Low-carbon operation, multi-city interconnected power system, Collaborative support, Feasible space

    Received: 21 Nov 2024; Accepted: 19 Dec 2024.

    Copyright: © 2024 Liu, Chen, Du and Luo. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

    * Correspondence: Zhihong Liu, State Grid Tibet Electric Power Co., Ltd., Lhasa, 850000, Tibet, China, Lhasa, China

    Disclaimer: All claims expressed in this article are solely those of the authors and do not necessarily represent those of their affiliated organizations, or those of the publisher, the editors and the reviewers. Any product that may be evaluated in this article or claim that may be made by its manufacturer is not guaranteed or endorsed by the publisher.