Analysis of Sub-Synchronous Oscillation of Virtual Synchronous Generator and Research on Suppression Strategy in Weak Grid
作者机构：Jianbi Power Plant of National Energy GroupZhenjiang21200China
出 版 物：《Energy Engineering》 (能源工程（英文）)
年 卷 期：2023年第120卷第11期
页 面：2683-2705页
核心收录：
学科分类：080802[工学-电力系统及其自动化] 0808[工学-电气工程] 08[工学]
主 题：PMSG VSG subsynchronous oscillation impedance modelling
摘 要：At present,the direct drive permanent magnet synchronous generator(DD-PMSG)grid connected system based on virtual synchronous generator(VSG)control will experience power oscillation at sub synchronous *** mechanism and characteristics of this new type of sub-synchronous interaction(SSI)are not yet clear,and the system cannot recover to steady state solely based on the characteristics of VSG *** when connected to a weak current network,oscillations are more pronounced,affecting the stability of the *** severe cases,the systemmay trigger shutdown protection and be disconnected from the *** research has only analyzed the oscillation mechanism under this phenomenon and has not proposed corresponding control *** article proposes aVSM control strategy based on the VSG control algorithm,which balances the dq axis component of voltage and current,and improves the voltage and current loop of VSG control to reduce the impact of sub-synchronous oscillation(SSO)on the power *** MATLAB/Simulink,a simulation model of the proposed control strategy was built to verify its correctness and effectiveness.
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