
新型电力系统
New Type Power Systems
Vol. 2 No. 3
Aug. 2024
第 2 卷 第 3 期
2024 年 8 月
超高比例新能源弱电网系统供电关键问题研究
刘泽洪,周原冰,李 隽,燕志宇,郑 炜
(全球能源互联网发展合作组织,北京 100031)
Research on Key Issues on Supplying Ultra-high New Energy Penetrated Weak Systems
LIU Zehong, ZHOU Yuanbing, LI Jun, YAN Zhiyu, ZHENG Wei
(Global Energy Interconnection Development and Cooperation Organization, Beijing 100031, China)
ABSTRACT: 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.
KEY WORDS: ultra-high ratio new energy; weak power grid; balance of power and energy; transient simulation; multivariate
energy storage; grid-forming technique
摘要: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。
关键词:超高比例新能源;弱电网;电力电量平衡;暂态建模仿真;多元储能;构网控制
0 引言
近年来,全球风电、光伏装机持续迅猛增长,
加快发展风光新能源、实现电力清洁转型已经成
为全球共识。随着新能源并网规模快速增长和新
能源渗透率的不断提升,电力系统在电源构成、
电网形态、负荷特性、运行特性等各方面正发生
DOI: 10.20121/j.2097-2784.ntps.240041 文章编号:2097-2784(2024)03-0282-15 中图分类号:TM 17 文献标识码:A