电气传动2026，Vol.56Issue(4)：31-38,8.DOI:10.19457/j.1001-2095.dqcd26605
基于构网型逆变器的光伏-储能低电压穿越控制策略
Grid-forming Inverter Based Photovoltaic-Energy Storage Low Voltage Ride Through Control Strategy
摘要
Abstract
To address issues like overcurrent,power oscillations,and insufficient dynamic response in traditional virtual synchronous generator(VSG)control during grid voltage sags,an improved VSG-low voltage ride through(LVRT)mode-switching control strategy for grid-forming inverters was proposed.The strategy dynamically switched between two modes depending on the real-time detected voltage sag depth:under normal operation and mild sags,it employed impedance-reshaping-based VSG control to enhance current loop dynamics and stability by reconstructing virtual impedance;during deep sags,it switched to a power-fast-response LVRT mode,optimizing active/reactive power distribution,adjusting the inertia coefficient,and compensating dynamic reactive power to provide fault-period reactive support and rapid power regulation.A state follower was also designed to coordinate voltage magnitude/phase synchronization during fault recovery,suppressing inrush currents during mode transitions.PSCAD/EMTDC simulations validate the strategy's correctness and effectiveness.关键词
构网型逆变器/低电压穿越/虚拟同步发电机/状态跟随Key words
grid-forming inverter/low voltage ride through(LVRT)/virtual synchronous generator(VSG)/state following分类
信息技术与安全科学引用本文复制引用
张运泉,陈轩昂,郭晓瑞,文安,叶润..基于构网型逆变器的光伏-储能低电压穿越控制策略[J].电气传动,2026,56(4):31-38,8.基金项目
浙江省电力有限公司集体企业科技项目(HZTLKJ2023-01) （HZTLKJ2023-01）
四川省科技计划区域创新项目(2024YFHZ0089) （2024YFHZ0089）
