中国电机工程学报2025，Vol.45Issue(8)：2911-2924,中插5,15.DOI:10.13334/j.0258-8013.pcsee.232381
基于电力电子变换器虚拟同步构网控制的电力系统暂态稳定极限提升方法
Power System Transient Stability Limit Enhancement Method Based on Virtual Synchronous Grid-forming Control of Power Electronic Converters
摘要
Abstract
Renewable energy sources like wind and photovoltaic power,which utilize power electronic converters as grid-connection interfaces,exhibit fundamentally different characteristics from synchronous generators.The high penetration of these renewable sources significantly alters power system transient stability characteristics and introduces new challenges for stability control.This paper proposes a method to enhance power system transient stability limits by leveraging the virtual synchronous grid-forming capabilities and flexible switching control of power electronic converters.First,we establish a transient stability analysis model for parallel converter-synchronous generator systems based on typical virtual synchronous grid-forming control structures and strategies.The analysis examines how the active power output ratio of virtual synchronous grid-forming converters affects transient stability and demonstrates the fundamental principle of improving system stability limits through flexible converter power control.Building on this foundation,we develop an adaptive active power control method that uses voltage dip depth as a switching criterion to dynamically adjust virtual synchronous grid-forming feedback modes,thereby enhancing transient stability limits.Simulation studies of power electronic converter grid-connected systems ultimately validate the effectiveness of the proposed stability enhancement approach.关键词
电力电子变换器/构网控制/虚拟同步控制/高渗透率/暂态稳定极限提升/相平面Key words
power electronic converters/grid-forming control/virtual synchronous control,high penetration/transient stability limit enhancement/phase portrait分类
动力与电气工程引用本文复制引用
梁帅,姚良忠,徐箭,程帆,喻恒凝,邓靖雷,潘尚智..基于电力电子变换器虚拟同步构网控制的电力系统暂态稳定极限提升方法[J].中国电机工程学报,2025,45(8):2911-2924,中插5,15.基金项目
国家电网有限公司科技项目(5100-202199273A-0-0-00).Science and Technology Project of Sate Grid Corporation of China(5100-202199273A-0-0-00). （5100-202199273A-0-0-00）
