中压直流(MVDC)微电网的潮流求解

M. Ghassemi, Ashkan Barzkar
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引用次数: 5

摘要

虽然高压直流和低压直流架构已经得到了很好的研究和发展,但中压直流(MVDC)的情况并非如此。关于近期开发快速、强大的MVDC断路器的努力,人们正在设想和研究以MVDC微电网为主要形式的未来MVDC网络,用于电网、海底油气电气化以及全电动船舶和飞机(AES、AEA)等运输电气化,因此需要新的工具、模型和求解器来研究直流网络的各种研究。在这方面,尽管已经开发了许多用于交流网络的教育和商业潮流(PF)求解器和算法,但几乎找不到针对直流网络的PF方法的研究。本文针对这一技术空白,开发了两种恒定发电和负载下的直流微电网PF求解方法,即Zbus法和单调映射法。求解器在MATLAB中编码,并使用全电气化的NASA N3-X飞机电力系统(EPS)进行测试和验证,其中还讨论了解决方案的存在性,唯一性和收敛性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Power Flow Solvers for Medium Voltage Direct Current (MVDC) Microgrids
While high voltage direct current and low voltage direct current architectures have been well researched and developed, this is not the case for medium voltage direct current (MVDC) ones. Regarding recent efforts to develop fast and powerful MVDC circuit breakers, future MVDC networks mainly as MVDC microgrids are being envisaged and studied for power grids, subsea oil and gas electrification, and transportation electrification such as all-electric ships and aircraft (AES, AEA), and thus, new tools, models, and solvers for various studies on DC networks are needed. In this regard, although many educational and commercial power flow (PF) solvers and algorithms have been developed for AC networks, pieces of research can barely be found dealing with PF methods for DC networks. This paper aims to address this technical gap by developing two PF solvers for DC microgrids under constant power generation and loads, namely Zbus method and monotone mapping. Solvers are coded in MATLAB, tested, and validated using an on-broad MVDC microgrid, the fully electrified NASA N3-X aircraft electric power system (EPS), where solutions' existence, uniqueness, and convergence are discussed as well.
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