光伏并网对低频振荡的影响与抑制  

INFLUENCE AND SUPPRESSION OF GRID-CONNECTED SOLAR POWER PLANTS ON LOW FREQUENCY OSCILLATION

作　　者：白凡 王宝华[1] Bai Fan;Wang Baohua(School of Automation,Nanjing University of Science&Technology^Nanjing 210094,China)

机构地区：[1]南京理工大学自动化学院,南京210094

出　　处：《太阳能学报》2020年第3期255-261,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(51607036)。

摘　　要：以大型光伏电站并入多机电力系统为研究对象,通过模式分析和时域仿真的方法,首先推导出光伏电站并入多机系统的状态方程线性化模型,然后搭建含光伏电站的四机两区域测试系统。研究结果表明:光伏电站的不同接入地点以及不同渗透率对多机系统低频振荡会产生影响,光伏电站并网后并未产生新的振荡模式。采用综合功率调制设计的光伏广域附加阻尼控制器可以抑制低频振荡。Taking large-scale solar power plants into multi-machine power system as the research object,through the method of modal analysis and time domain analysis,firstly,the linear equations of the state equation of the multi-machine system is deduced,and then a four-generator two-area test system with solar power plants is set up. Research results indicate that different access points and different permeability of solar power plants can affect the low frequency oscillation of multi-machine systems,grid-connected solar power plants did not produce a new oscillation mode. The use of integrated power modulation design of the photovoltaic wide-area additional damping controller can suppress low-frequency oscillation.

关 键 词：模式分析 光伏电站 时域分析 低频振荡 综合功率调制 附加阻尼控制器 

分 类 号：TM914.4[电气工程—电力电子与电力传动]