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Enhanced Transient Control of Grid-Forming Inverters: A Dual-Objective Strategy for Power Angle Stabilization and Fault Current Limiting

Jiawei ManNortheast Electric Power University,Department of Electrical Engineering,Jilin,ChinaChuang LiuNortheast Electric Power University,Department of Electrical Engineering,Jilin,ChinaI U RakhmonovTashkent State Technical University,Department of Power Supply,Tashkent,UzbekistanRutian WangNortheast Electric Power University,Department of Electrical Engineering,Jilin,ChinaHeling YangNortheast Electric Power University,Department of Electrical Engineering,Jilin,ChinaJunrui ChenNortheast Electric Power University,Department of Electrical Engineering,Jilin,ChinaMingyao RenNortheast Electric Power University,Department of Electrical Engineering,Jilin,ChinaCong SunNortheast Electric Power University,Department of Electrical Engineering,Jilin,ChinaZhenglong SuiNortheast Electric Power University,Department of Electrical Engineering,Jilin,China

2025en

ABI

Annotatsiya

This paper addresses the transient stability of gridconnected inverters under high renewable energy penetration by proposing a dual-objective coordinated control strategy for power angle stabilization and fault current limitation. A third-order active supporting virtual synchronous generator model is developed, integrating a control architecture with virtual power angle compensation in the power loop and dynamic voltage regulation in the voltage loop. The innovative Kon triggering coefficient enables adaptive switching between control modes. Transient power angle dynamics analysis and the equal-area criterion validate large-disturbance stability, while circuit equation modeling and vector analysis reveal the synergy between enhanced voltage support and fault current limitation. Case studies on a photovoltaic plant demonstrate the proposed transient control strategy's excellent effectiveness in mitigating three-phase symmetrical short-circuit faults.

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Identifikatorlar

DOI: 10.1109/epe67256.2025.11127034

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