摘要
基于电力电子变流器的风电并网系统具有非线性、多时间尺度特征,受扰后易引发宽频段振荡问题,威胁系统稳定运行。如何实现宽频振荡的快速主动阻尼已成为风电并网系统中最受关注的问题。同时,随着直流输电系统等柔性设备接入电网,风电并网系统宽频振荡强交互、多模态特征逐渐凸显,这对风电并网系统宽频振荡阻尼技术提出了更高的要求。鉴于此,首先介绍了国内外典型宽频振荡事件,并归纳了风电并网系统宽频振荡的特征及未来发展趋势。然后,从源侧和网侧主动阻尼控制出发总结了宽频振荡控制策略的研究现状,分析了其存在的技术难点。在此基础上,结合动态能量分析法,提出了应对上述挑战的多项关键技术,为风电并网安全稳定控制提供理论支撑。
A wind power integrated system based on power electronic converters,nonlinear and multi-scale is apt to cause wide band oscillation after disturbance,which affects the safe and stable operation of the system.How to realize the broadband oscillation active damping has become the most concerned problem in wind power integrated system.With the integration of DC transmission system and other flexible equipment into the grid,the strong interaction and multi-modal characteristics of the wind power integrated system are gradually highlighted,which puts forward higher requirements for the adoption of the broadband oscillation damping technology of the wind power grid connected system.This paper first introduces the typical broadband oscillation events at home and abroad,and summarizes the characteristics and future development trend of the broadband oscillation in the wind power integrated system.Then,the research status of the broadband oscillation control strategy is summarized from both the source side and the network side,and its technical difficulties are analyzed.On this basis,combined with the dynamic energy analysis method,a number of key technologies to meet the above challenges are constructed,which provides theoretical support for the security and stability control of the wind power integration.
作者
马静
沈雅琦
杜延菱
刘辉
王靖然
MA Jing;SHEN Yaqi;DU Yanling;LIU Hui;WANG Jingran(State Key Laboratory for Alternate Electrical Power System With Renewable Energy Sources(North China Electric Power University),Changping District,Beijing 102206,China;State Grid Jibei Electric Power Company,Xicheng District,Beijing 100053,China;State Grid Jibei Electric Power Research Institute(North China Electric Power Research Institute Co.,Ltd.),Xicheng District,Beijing 100045,China)
出处
《电网技术》
EI
CSCD
北大核心
2021年第5期1673-1686,共14页
Power System Technology
基金
国家自然科学基金项目(51777070)。
关键词
风电并网系统
宽频振荡
主动阻尼控制
动态能量
wind power integrated system
broadband oscillation
active damping control
dynamic energy analysis
