抑制风电场中次同步振荡的储能电池控制策略  

A control strategy for energy storage batteries to suppress subsynchronous oscillations in wind farms

作　　者：鞠承玺 李翠萍[1] 李军徽[1] JU Chengxi;LI Cuiping;LI Junhui(School of Electrical Engineering Northeast Electric Power University,Jilin 132012,China)

机构地区：[1]东北电力大学,吉林吉林132012

出　　处：《电气应用》2024年第7期92-98,共7页Electrotechnical Application

摘　　要：针对次同步振荡在高比例的新能源动力系统中出现的问题,提出双馈式风机并网系统,采用储能电池附加阻尼控制,可有效抑制次同步振荡。首先,构建了双馈风机含储能电池串补送出系统模型,通过特征值和时域仿真分析有无串联补偿电容投入的情况,以此为依据,制定了含储能电池控制策略,能够对次同步振荡进行合理抑制。其次,深入分析了系统次同步振荡抑制机制,并对含储能电池的双馈式风机分别分析了含储能电池的附加阻尼和储能的比例谐振控制。在储能比例谐振的基础上提出了附加的次同步减振控制策略,并设计了参数。最后,采用时域仿真分析法验证了所提控制策略的可行性与有效性,为合理抑制次同步振荡提供参考。This paper aims at the problem of subsynchronous oscillation in a high proportion of new energy power systems,and the research object is the grid-connected system of doubly-fed wind turbines,which can effectively suppress subsynchronous oscillation by using additional damping control of energy storage batteries.Firstly,a system model of doubly-fed wind turbine with energy storage battery string compensation was constructed,and the situation of whether there was series compensation capacitor input was analyzed through eigenvalue and time domain simulation,and based on this,the control strategy of the battery with energy storage was formulated,which could reasonably suppress the subsynchronous oscillation.Secondly,through an in-depth analysis of the subsynchronous oscillation suppression mechanism of the system,the additional damping of the doubly-fed wind turbine with energy storage battery and the proportional resonance control of energy storage were analyzed,respectively.On the basis of the proportional resonance of energy storage,an additional subsynchronous damping control strategy is proposed,and its parameters are designed.Finally,the time-domain simulation analysis method is used to verify the feasibility and effectiveness of the control strategy in this paper,which provides a good reference for reasonably suppressing the subsynchronous oscillation.

关 键 词：风电场 次同步振荡 储能电池 附加阻尼控制 

分 类 号：TM614[电气工程—电力系统及自动化] TM91TM712