摘要
在分析储能装置抑制电网功率振荡机理的基础上,提出了一种可协同惯量控制与阻尼控制的储能装置控制器参数优化设计方法。首先在电气转矩分析法的基础上,建立含储能装置在内的单机无穷大电网机电时间尺度数学模型;然后依据储能装置抑制功率振荡机理分析结果,在反馈发电机转速控制的基础上,建立系统优化模型。通过对优化模型的求解,设计储能装置的控制器参数,使储能装置提供的惯量效应、阻尼作用可以根据电网的运行状态在线地自适应调控,以此改善同步机系统固有的惯量特性和阻尼能力,提高储能装置抑制电网功率振荡时的动态性能。最后,仿真结果验证了所提控制策略及其参数优化设计方法的有效性。
Based on the analysis of the mechanism of power storage devices’suppression of power grid oscillation,parameter optimization design method is proposed for energy storage device controller with synergistic inertia control and damping control.Firstly,based on the electric torque analysis method,the mechanical time scale mathematical model of the single-machine infinite grid with energy storage device is established.Then,a system optimization model is established on the basis of the analysis of energy oscillation mechanism of the energy storage device and the feedback of generator speed control.By solving the optimization model,the controller parameters of the energy storage device are designed so that the inertia effect and damping effect provided by the energy storage device can be adaptively adjusted online according to the operating state of the power grid,thereby improving the inherent inertia characteristics of synchronous machine system and damping capacity,and improving the dynamic performance of energy storage device when suppressing power system oscillation.Finally,the simulation results also verify the effectiveness of the proposed control strategy and its parameter optimization design method.
作者
王悦
林健
张仪
查雨欣
郝捷
唐震
WANG Yue;LIN Jian;ZHANG Yi;ZHA Yuxin;HAO Jie;TANG Zhen(School of Electric Power Engineering,Nanjing Institute of Technology,Nanjing 211167,China;State Grid Shanxi Electric Power Research Institute,Taiyuan 030001,China)
出处
《智慧电力》
北大核心
2020年第8期76-83,共8页
Smart Power
基金
国家自然科学基金资助项目(51707091)。
关键词
参数优化设计
电网功率振荡
机电时间尺度
惯量和阻尼
储能装置控制
parameter optimization design
power system oscillation
electromechanical time scale
inertia and damping
energy storage device control
