大容量电压源型逆变器在新型电力系统构建中的关键技术和创新展望

马为民; 李明; 薛英林; 王莹鑫; 吴方劼; 赵峥; 李探

doi:10.12204/j.issn.1000-7229.2025.10.001

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电力建设 ›› 2025, Vol. 46 ›› Issue (10) : 1-11. DOI: 10.12204/j.issn.1000-7229.2025.10.001

电力电子装备在新型电力系统中的应用·栏目主持徐政、余占清、赵成勇、查晓明、向往、马为民、吴方劼·

大容量电压源型逆变器在新型电力系统构建中的关键技术和创新展望

作者信息 +

Key Technologies and Innovation Prospects of Large-Capacity Voltage-Sourced Inverter in the Construction of New Power Systems

Author information +

文章历史 +

摘要

【目的】基于模块化多电平技术的大容量电压源型逆变器（static var generator，SVG），可实现主动构网、无功补偿、谐波抑制、阻抗重塑等多种功能，是支撑新型电力系统构建的重要设备。【方法】对大容量电压源型逆变器在新型电力系统构建中的关键技术进行了论述。首先，回顾了SVG的发展历程和基本拓扑原理，梳理了SVG与模块化多电平换流器（modular multilevel converter，MMC）演化转换关系，分析了SVG支撑电网强度的量化评估公式，总结了SVG保障新型电力系统在高比例新能源、高比例电力电子设备接入下安全稳定运行的优势。然后，重点对基于SVG的多源换相换流器（multisource line commutation converter，SLCC）技术、有源滤波器、构网型SVG、储能型SVG等关键技术进行了分析。最后，对SVG在未来新型电力系统中可发挥的关键作用和后续重点研究方向进行了展望。【结果】在未来新型电力系统构建中，大容量SVG在大规模新能源孤岛送出、弱系统电压支撑、广域谐波抑制等方面应用前景广阔。【结论】孤岛新能源下SVG预充电和黑启动、多SVG间协调配合控制等方面有待开展进一步深入研究。

Abstract

[Objective] The large-capacity static var generator （SVG） based on modular multilevel technology can be used to realize various functions such as active network construction，reactive power compensation， harmonic suppression，and impedance remodeling，and is an important equipment to support the construction of new power systems. [Methods] This study discusses the key technologies and innovation prospects of large-capacity voltage-sourced inverters in the construction of new power systems， reviews the development history and basic topological principles of SVG，determines the evolutionary conversion relationship between SVG and modular multilevel converters， analyzes the quantitative evaluation formula of AC grid strength supported by SVG，and summarizes the advantages of SVG in ensuring the safe and stable operation of the new power system with a high proportion of new energy and power electronic equipment. Then， key technologies such as SVG-based multisource line commutation converter （SLCC） technology， active filter，grid-forming SVG，and energy storage-type SVG were analyzed. Finally，the key role that SVG plays in the construction of new power systems and the key research directions were discussed. [Results] In the construction of new power systems， large-capacity SVGs have broad application prospects in areas such as large-scale new energy island exports，weak-system voltage support， and wide-area harmonic suppression. [Conclusions] Further in-depth research is needed on SVG precharging and black start，as well as on coordinated control among multiple SVGs in isolated new energy systems.

导出引用

马为民, 李明, 薛英林, 等. 大容量电压源型逆变器在新型电力系统构建中的关键技术和创新展望[J]. 电力建设. 2025, 46(10): 1-11 https://doi.org/10.12204/j.issn.1000-7229.2025.10.001

MA Weimin, LI Ming, XUE Yinglin, et al. Key Technologies and Innovation Prospects of Large-Capacity Voltage-Sourced Inverter in the Construction of New Power Systems[J]. Electric Power Construction. 2025, 46(10): 1-11 https://doi.org/10.12204/j.issn.1000-7229.2025.10.001

中图分类号： TM46

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摘要

上海电网是典型的大受端电网,受电比率已达用电负荷的35%。上海220 kV电网分7片运行,各分区内电压支撑能力和联络能力不强,动态无功储备缺乏,极易引发电压稳定问题。其中黄渡分区最有必要配置动态无功设备,在西郊变电站安装了±50Mvar STATCOM动态无功补偿装置。±50Mvar及以上STATCOM装置目前世界上仅有7台,该台是我国完全拥有自主知识产权的设备,技术达到世界先进水平。从安装运行后的情况看,黄渡分区线损率至少可降低5%左右。

ZHU

Jixin

. Application of ±50 Mvar STATCOM in Shanghai power grid[J]. Electric Power Construction, 2006, 27(12): 14-17.

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