基于自适应电压补偿的孤岛微网VSG并联系统电压支撑策略

王自力; 李雪萍; 陈燕东; 肖 凡; 罗 聪; 李旭阳; 张明宇

引用本文:	王自力,李雪萍,陈燕东,等.基于自适应电压补偿的孤岛微网VSG并联系统电压支撑策略[J].电力系统保护与控制,2026,54(07):104-115.
	WANG Zili,LI Xueping,CHEN Yandong,et al.Voltage support strategy for parallel VSG systems in islanded microgrids based on adaptive voltage compensation[J].Power System Protection and Control,2026,54(07):104-115

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基于自适应电压补偿的孤岛微网VSG并联系统电压支撑策略
王自力^1，2，李雪萍¹，陈燕东²，肖凡²，罗聪²，李旭阳²，张明宇²
1.湖南第一师范学院，湖南长沙 410082；2.电能高效高质转化全国重点实验室(湖南大学)，湖南长沙 410082

摘要:

传统虚拟同步发电机的电压控制为有差控制，且由于缺乏大电网的电压支撑，导致孤岛微网(virtual synchronous generator, VSG)并联系统在受到负荷扰动时面临电压偏移甚至越限问题。基于此，提出了一种基于自适应电压补偿控制的孤岛微网VSG并联系统母线电压支撑控制方法。通过在传统VSG无功环中引入附加电压补偿控制和电压补偿系数自适应控制，在无需引入额外测量装置且完全消除对通信依赖的条件下，以分散式形式实现多个VSG自主协调配合，可提升系统稳态电压控制精度，并有效抑制负荷扰动引起的系统母线电压波动。然后，通过稳定性分析设计了关键控制参数。最后，通过仿真和实验验证了所提控制方法的有效性。

关键词: 虚拟同步发电机电压补偿主动支撑分散式控制

DOI：10.19783/j.cnki.pspc.250904

分类号:

基金项目:湖南省自然科学基金青年项目资助(2024JJ6172)；电能高效高质转化全国重点实验室开放基金项目资助(2024KF005)；湖南省教育厅优秀青年基金项目资助(24B0853)

Voltage support strategy for parallel VSG systems in islanded microgrids based on adaptive voltage compensation

WANG Zili^1,2, LI Xueping¹, CHEN Yandong², XIAO Fan², LUO Cong², LI Xuyang², ZHANG Mingyu²

1. Hunan First Normal University, Changsha 410082, China; 2. State Key Laboratory of High-efficiency and High-quality Conversion for Electric Power (Hunan University), Changsha 410082, China

Abstract:

Voltage control of traditional virtual synchronous generator (VSG) employs a droop characteristic, which leads to steady-state voltage deviations. Moreover, due to the lack of voltage support from large power grids, parallel VSG systems in islanded microgrids are prone to voltage deviations or even exceeding limits when subjected to load disturbances. To address this issue, a bus voltage support control strategy for parallel VSGs in islanded microgrids based on adaptive voltage compensation is proposed. By introducing an additional voltage compensation control and an adaptive voltage compensation coefficient into the traditional VSG reactive power control loop, multiple VSGs can autonomously coordinate and cooperate in a fully decentralized manner without requiring extra measurement devices or communication links. The proposed control method improves the steady-state voltage control accuracy and effectively suppress bus voltage fluctuations caused by load disturbances. Furthermore, key control parameters are designed through stability analysis. Finally, the effectiveness of the proposed control method is verified through simulation and experiments.

Key words: virtual synchronous generator voltage compensation active support decentralized control

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