摘要
由诸多电力电子装备构成的新能源电站与电网间的相互作用不断增强,容易诱发电网产生多频段振荡现象。分析了新能源与电网间的多频段振荡问题,建立了含风电与光伏的新能源系统模型,通过特征值分析对不同频段的特征频率进行聚合划分,依次分为低频振荡、次同步振荡以及高频振荡;借助储能快速响应特性构建储能抑制电网多频段振荡系统,通过划分电网频率和电压振荡的频段,提升不同频段的阻尼作用,实现多频段振荡的有效抑制。通过仿真验证了所提控制策略的有效性。
The increasing interaction between the new energy power station composed of power electronic equipment and the power grid is likely to induce the multi-frequency oscillation phenomenon in the system.In this paper,in view of the new energy and power grid of the interaction of multiple frequency oscillation problems were analyzed,and the first of all,the establishment system model,through analyzing the eigenvalues of the model characteristics of different frequency bands of frequency divides the aggregation,in turn,divided into low-frequency,the sub-synchronous and high-frequency oscillation.On this basis,the energy storage system is constructed to suppress the multi-band oscillation of the power grid by virtue of the fast response characteristic of the energy storage system,and the damping control of different frequency bands is improved by dividing the frequency band and voltage oscillation band to effectively suppress the multi-band oscillation.Finally,through simulation to build the landscape storage grid system model,verify the effectiveness of the proposed strategy.
作者
胡安平
李官军
桑丙玉
崔红芬
杨波
HU An-ping;LI Guan-jun;SANG Bing-yu;CUI Hong-fen;YANG Bo(China Electric Power Research Institute Co.,Ltd.,Nanjing Jiangsu 210003,China;Jiangsu Engineering Technology Research Center for Energy Storage Conversion and Application,Nanjing Jiangsu 210003,China)
出处
《电源技术》
CAS
北大核心
2020年第11期1679-1682,共4页
Chinese Journal of Power Sources
基金
国家电网公司科技项目(基于储能的大型新能源电站主动支撑技术研究及应用,NY71-16-045)。
关键词
多频段振荡
阻尼控制
储能系统
新能源电站
multiband oscillation
damping control
energy storage system
new energy power stations
