浙江电力2026，Vol.45Issue(3)：49-61,13.DOI:10.19585/j.zjdl.202603005
有功预留式构网型光伏变流器电压调控方法
A voltage regulation method for active power reserve-based grid-forming photovoltaic inverters
摘要
Abstract
The increasing penetration of distributed photovoltaic(PV)systems in low-voltage distribution areas has led to growing voltage violations due to source-load mismatch and inadequate reactive power support.To address this,a voltage regulation method for active power reserve-based grid-forming(GFM)photovoltaic(PV)inverters is proposed.In the grid-forming virtual synchronous generator(VSG)inverter control framework,multiple modes such as maximum power tracking/active power reserve,reactive power adaptive voltage regulation/reactive power locking are introduced,forming a coordinated voltage regulation logic with"reactive power regulation prioritized and flex-ible active power as backup".A small-signal model is established using the state-space method to identify the domi-nant poles and provide parameter tuning criteria.The symmetrical component method is used to construct the posi-tive and negative sequence output impedance,and the impedance ratio criterion is applied to evaluate grid connec-tion stability.A fine-tuned model of a typical voltage violation area is built on the Simulink platform,and the pro-posed control strategy is integrated for simulation verification.The results show that this strategy can quickly release the voltage regulation margin in the early stage of voltage violation,effectively implement flexible active and reac-tive power adaptive coordinated voltage regulation,suppress voltage rise at the grid connection point,and provide voltage and frequency support.It is suitable for both existing and new distribution areas.关键词
有功预留/VSG/构网型光伏/电压越限治理Key words
active power reserve/VSG/grid-forming photovoltaic/voltage violation control引用本文复制引用
章天晗,吴俊飞,周行,杨彬,洪建军,于淼,代一乐..有功预留式构网型光伏变流器电压调控方法[J].浙江电力,2026,45(3):49-61,13.基金项目
智能电网国家科技重大专项(2025ZD0806800) （2025ZD0806800）
国网浙江省电力有限公司科技项目(521163250004) （521163250004）
