摘要
针对串补电网条件下虚拟同步发电机(VSG)的次同步振荡问题,建立了包含无功环的VSG序阻抗模型,并基于阻抗比稳定性判据分析了振荡机理。最后,采用一种虚拟电阻方法提高了串补电网下VSG的稳定性。实验结果验证了理论分析及所提方法的正确性。
Aiming at the problem of subsynchronous oscillation of virtual synchronous generator(VSG)under the condition of series compensation grid,a sequence impedance model of VSG with reactive power loop is established,and the mechanism of oscillation is analyzed based on the stability criterion of impedance ratio criterion.Finally,a virtual resistance method is used to improve the stability of the VSG in the series compensation grid.The experimental results verify the correctness of the theoretical analysis and the proposed method.
作者
王杨
张兴
郭梓暄
潘海龙
WANG Yang;ZHANG Xing;GUO Zi-xuan;PAN Hai-long(Hefei University of Technologyy Hefei 230009,China)
出处
《电力电子技术》
CSCD
北大核心
2021年第4期20-25,共6页
Power Electronics
基金
国家自然科学基金(51937003)。
关键词
虚拟同步发电机
串补电网
次同步振荡
virtual synchronous generator
series compensation grid
subsynchronous oscillation
