摘要
“双碳”目标背景下电力系统形成“高比例可再生能源”和“高比例电力电子设备”的“双高”趋势,以致电网呈现弱电网特性。弱电网下电网阻抗实时变化,导致光伏并网逆变器谐振频率偏移、逆变器集群多谐振峰等稳定性问题。针对光伏并网逆变器在弱电网下最新的谐振抑制方法尚未得到系统地归纳总结,从弱电网下逆变器单元谐振抑制方法和逆变器集群谐振抑制方法两方面综述“双高”电力系统下光伏并网逆变器谐振抑制热点控制方法,为光伏并网逆变器的稳定性提升指明发展方向。
Under the background of"carbon peak and carbon neutrality"goals,the power system has formed a"double-high"(high proportion of renewable energy and high proportion power electronic equipment)development trend,resulting in a weak grid characteristic of the power grid.Real-time changes in grid impedance under weak grid lead to stability issues such as resonant frequency offset of photovoltaic(PV)grid-connected inverters,and multiple resonant peaks in inverter clusters.Aiming at the fact that the latest resonance suppression methods for PV grid-connected inverters in weak grid have not been systematically summarized,this article summarizes the hot spot control methods in the field of PV grid-connected inverter resonance suppression in"double-high"power systems from the perspectives of inverter unit resonance suppression methods and inverter cluster resonance suppression methods under weak grid.The development direction of improving the stability of PV grid-connected inverters is pointed out.
作者
刘江
高淑萍
孙向东
宋卫章
LIU Jiang;GAO Shuping;SUN Xiangdong;SONG Weizhang(Department of Electrical Engineering,College of Electrical and Control Engineering,Xi’an University of Science and Technology,Xi’an 710054,China;Xi’an Key Laboratory of Electrical Equipment Condition Monitoring and Power Supply Security,Xi’an 710054,China;Department of Power Electronics,College of Electrical Engineering,Xi’an University of Technology,Xi’an 710048,China)
出处
《南方电网技术》
CSCD
北大核心
2024年第3期65-71,共7页
Southern Power System Technology
基金
国家自然科学基金资助项目(51777166
51877176)。
关键词
“双碳”目标
“双高”电力系统
光伏并网逆变器
谐振抑制
"carbon peak and carbon neutrality"goals
"double-high"power system
PV grid-connected inverters
resonance suppression
