
全球能源互联网发展合作组织,北京 100031
Received:24 May 2024,
Revised:2024-06-19,
Published:30 August 2024
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刘泽洪,周原冰,李隽,等.超高比例新能源弱电网系统供电关键问题研究[J].新型电力系统,2024,02(3):282-296.
LIU Zehong,ZHOU Yuanbing,LI Jun,et al.Research on Key Issues on Supplying Ultra-high New Energy Penetrated Weak Systems[J].New Type Power Systems,2024,02(03):282-296.
刘泽洪,周原冰,李隽,等.超高比例新能源弱电网系统供电关键问题研究[J].新型电力系统,2024,02(3):282-296. DOI: 10.20121/j.2097-2784.ntps.240041.
LIU Zehong,ZHOU Yuanbing,LI Jun,et al.Research on Key Issues on Supplying Ultra-high New Energy Penetrated Weak Systems[J].New Type Power Systems,2024,02(03):282-296. DOI: 10.20121/j.2097-2784.ntps.240041.
随着电力系统中新能源并网规模快速增加,系统形态特征与运行机理发生深刻变化,特别对远离主网、缺乏传统能源的地区,面临电力保供和系统安全稳定等严峻挑战。现有研究多从源网荷储某一环节切入,提出中高比例新能源电力系统供电可靠性提升方法,缺乏对超高比例新能源弱电网系统特有难题的针对性考虑及系统性、前瞻性解决方案。为此,文中以新能源电量占比超过80%、新能源并网点短路比低于1.5的弱电网系统为研究对象,提出含电源及灵活调节资源优化配置、电网组网模式、暂态稳定运行分析的总体研究框架,并以我国西部某超高比例新能源弱电网系统为例开展实证研究。研究成果表明,所提方案以超高比例新能源发电为基础,以弱联电网为载体,以多元储能及负荷柔性调节为灵活性支撑,以构网控制技术为安全支撑,能有效保障系统可靠供电,为未来超高比例新能源新型电力系统的构建提供借鉴参考。
2
With the large-scale integration of new energy into the power system
the characteristics and operating mechanisms of the system have undergone profound changes
especially in areas far from the main grid and lacking traditional energy
facing severe challenges such as power supply reliablility and system security. Existing research mostly focuses on a certain aspect of the source-grid-load-storage
and proposes methods to improve the reliability of power supply in medium or high proportion new energy power systems. However
there is a lack of targeted consideration and systematic forward-looking solutions for the unique problems of ultra-high proportion new energy weak systems. Therefore
this paper takes the weak power grid with a proportion of new energy electricity exceeding 80% and a short circuit ratio of new energy grid points below 1.5 as the research object
and proposes an overall research framework including optimized configuration of power sources and flexible regulation resources
grid networking mode
and transient simulation analysis. Case studies in an ultra-high proportion of new energy weak grid system in western China are conducted to manifest the effectiveness of the proposed methods. The results indicate that the proposed scheme
using ultra-high proportion new energy generation as basis
weak-interconnected power grids as carriers
multivariate energy storage and load regulation as flexibility support
and grid-forming technique as security support
can effectively ensure reliable power supply for the system and provide reference for the construction of future ultra-high proportion new energy new-type power systems.
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