Development of Operation Strategies of MIDC Systems for Mitigating Renewable Energy Curtailment in Korean Power System

IF 1.6 4区 工程技术 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Hyeokjin Son, Gilsoo Jang
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Abstract

With the growing integration of renewable energy (RE), there is an increasing emphasis on system flexibility, underscoring the need for a high-voltage direct current (HVDC) infrastructure. In Korea, multi-infeed HVDC (MIDC) systems asynchronously interconnect the mainland and Jeju Island to enhance the stable power supply of Jeju power system. However, as the penetration of RE expands, the risk of transmission line (TL) overload increases, affecting both the mainland and Jeju, potentially leading to regional conflicts based on the operation point of MIDC. To mitigate this issue, this study proposes a methodology for determining the optimal operating point of MIDC to alleviate TL overloads and mitigate the possible curtailment of RE. The impact of the operating point of MIDC and the output of RE on TL overloads is determined through a sensitivity analysis using the power transfer distribution factor. We then propose a method to determine the steady-state optimal operating point of MIDC through linear programming-based optimization for the three optimization objectives. The proposed strategy is validated through case studies of a real Korean power system using PSS/E and MATLAB.

Abstract Image

制定 MIDC 系统的运行策略以缓解韩国电力系统中的可再生能源断电问题
随着可再生能源(RE)集成度的不断提高,人们越来越重视系统的灵活性,这凸显了对高压直流(HVDC)基础设施的需求。在韩国,多馈线高压直流(MIDC)系统将大陆和济州岛异步互联,以增强济州电力系统的稳定供电。然而,随着可再生能源渗透率的扩大,输电线路(TL)过载的风险也随之增加,大陆和济州岛都会受到影响,并有可能根据 MIDC 的运行点导致区域冲突。为缓解这一问题,本研究提出了一种方法,用于确定 MIDC 的最佳运行点,以减轻 TL 过载并缓解可能出现的可再生能源削减。通过使用功率传输分配系数进行敏感性分析,确定了 MIDC 运行点和可再生能源输出对 TL 过载的影响。然后,我们针对三个优化目标提出了一种方法,通过基于线性规划的优化来确定 MIDC 的稳态最佳运行点。通过使用 PSS/E 和 MATLAB 对韩国实际电力系统进行案例研究,验证了所提出的策略。
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
Journal of Electrical Engineering & Technology
Journal of Electrical Engineering & Technology ENGINEERING, ELECTRICAL & ELECTRONIC-
CiteScore
4.00
自引率
15.80%
发文量
321
审稿时长
3.8 months
期刊介绍: ournal of Electrical Engineering and Technology (JEET), which is the official publication of the Korean Institute of Electrical Engineers (KIEE) being published bimonthly, released the first issue in March 2006.The journal is open to submission from scholars and experts in the wide areas of electrical engineering technologies. The scope of the journal includes all issues in the field of Electrical Engineering and Technology. Included are techniques for electrical power engineering, electrical machinery and energy conversion systems, electrophysics and applications, information and controls.
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