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虚拟同步机控制下串联补偿并网系统的次同步谐振分析与抑制

Analysis and Mitigation of Subsynchronous Resonance in Series-Compensated Grid-Connected System Controlled by a Virtual Synchronous Generator

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中文摘要

本文类比同步发电机的次同步谐振(SSR)现象,研究了虚拟同步机(VSG)在串联补偿电网中因阻抗交互引起的低频振荡问题。文章通过阻抗建模分析了系统的稳定性,并提出了相应的抑制策略,旨在解决高比例电力电子化电网中的谐振风险。

English Abstract

Analogizing the subsynchronous resonance (SSR) phenomenon of the series-compensated grid-connected system based on synchronous generator, the virtual synchronous generator (VSG) also has the low-frequency oscillation problem owing to the impedance interaction between VSG and series-compensated network. Stability of the series-compensated grid-connected system controlled by VSG is analyzed by the i...
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SunView 深度解读

随着阳光电源PowerTitan等大型储能系统及组串式逆变器在弱电网和长距离输电场景的应用增加,构网型(GFM)技术已成为核心竞争力。VSG作为构网型控制的关键技术,在串补电网中面临的SSR风险直接影响电站的并网稳定性。本研究对于优化阳光电源逆变器及PCS的控制算法、提升在复杂电网环境下的阻抗匹配能力具有重要指导意义。建议研发团队将该抑制策略集成至iSolarCloud智能运维平台及逆变器控制固件中,以增强系统在弱电网下的鲁棒性,确保大型地面光伏电站及电网侧储能项目的安全运行。