湖南电力 ›› 2024, Vol. 44 ›› Issue (2): 112-121.doi: 10.3969/j.issn.1008-0198.2024.02.015

• 经验与探讨 • 上一篇    下一篇

构网型逆变器与SVG并联系统无功功率协调控制策略

陈燕东1,2, 裴欣欣1,2, 符有泽1,2, 李旭阳1,2, 张明宇1,2, 周可慧3, 唐海国3   

  1. 1.国家电能变换与控制工程技术研究中心,湖南 长沙410082;
    2.湖南大学,湖南 长沙 410082;
    3.国网湖南省电力有限公司电力科学研究院,湖南 长沙 410208
  • 收稿日期:2023-12-14 修回日期:2024-01-08 出版日期:2024-04-25 发布日期:2024-05-14
  • 通信作者: 陈燕东(1979),男,教授,博士,主要研究方向为新能源发电装备/场站建模与控制、微电网控制运行与电能质量调节。
  • 作者简介:裴欣欣(1998),男,硕士研究生在读,主要研究方向为新能源稳定并网运行与控制。
    符有泽(1998),男,博士研究生在读,主要研究方向为新能源稳定并网运行与控制。
  • 基金资助:
    国家自然科学基金项目 (52077070);国网湖南省电力有限公司科技项目(5216A321N301)

Coordinated Control Strategy of Reactive Power of Grid-Forming Inverter and SVG Parallel System

CHEN Yandong1,2, PEI Xinxin1,2, FU Youze1,2, LI Xuyang1,2, ZHANG Mingyu1,2, ZHOU Kehui3, TANG Haiguo3   

  1. 1. National Electric Power Conversion and Control Engineering Technology Research Center, Changsha 410082, China;
    2. Hunan University, Changsha 410082, China;
    3. Electric Power Research Institute of State Grid Hunan Electric Power Company, Changsha 410208, China
  • Received:2023-12-14 Revised:2024-01-08 Online:2024-04-25 Published:2024-05-14

摘要: 以静止无功发生器(static var generator,SVG)为例,针对构网型逆变器和SVG并联系统的电压稳定性问题,提出构网型逆变器与SVG并联系统无功功率协调控制策略。将并联系统的运行状态总结为四种工况,通过工况识别、无功补偿量计算、无功功率分配策略、工况切换,来协调不同工况下构网型逆变器与SVG注入公共耦合点的无功功率,使并联系统在各种情况下均可稳定可靠工作。在MATLAB中搭建模型并进行仿真,结果表明所提控制策略可以实现工况的快速识别与切换、无功补偿量的计算、无功功率的分配,以及对公共耦合点电压的快速支撑。

关键词: 构网型逆变器, SVG, 无功功率, 协调控制, 虚拟同步发电机

Abstract: Taking the static var generator (SVG) as an example,this paper proposes a coordinated reactive power control strategy for grid-forming inverter and SVG parallel systems to address the voltage stability issue. Summarize the operation status of the parallel system into four working conditions,and coordinate the reactive power of the grid-forming inverter and SVG injection common coupling point under different working conditions through working condition identification, reactive power compensation calculation,reactive power allocation strategy,and working condition switching,so that the parallel system can work stably and reliably in all situations.A model is built in MATLAB and simulation is conducted.The results show that the proposed control strategy can achieve fast identification and switching of operating conditions,calculation of reactive power compensation,allocation of reactive power,and fast support for common coupling point voltage.

Key words: grid-forming inverter, SVG, reactive power, coordinated control, virtual synchronous generator

中图分类号: