风力-光伏发电系统功率平衡预测控制器设计及仿真分析

Design and simulation analysis of power balance prediction controller for wind-pv power generation system

为了提高风力-光伏发电系统的功率预测的境地,大多充分分析风力-光伏发电系统的基础上,提出一种风力-光伏发电系统功率平衡预测控制器设计。考虑到控制器的设计需以线性化模型为依据,对风力-光伏发电系统进行功率平衡预测的具体控制结构进行设计。为获得将来时刻所有系统能够达到的最大可用功率,需假定在规定的采样时间中可以达到恒定的光照、风速与温度状态。当t=8s时,在保证风力-光伏发电系统能够满足负荷发电功率要求的基础上,降低风机的发电负荷,使Pw减小为1.03kW,同时进行光伏发电,此时Ps增大至0.46kW,通过功率平衡预测控制的方法,能够有效克服系统受到的输出功率增幅限制。

in order to improve the situation of wind-photovoltaic power generation system's power prediction, a kind of wind-photovoltaic power generation system7 s power balance prediction controller design is proposed on the basis of sufficient analysis of wind-photovoltaic power generation system. Considering that the design of the controller is based on the linearized model, the specific control structure for the power balance prediction of the wind-pv power generation system is designed.In order to obtain the maximum power available for all subsystems at a future time, it is assumed that a constant state of light, wind speed and temperature can be achieved within a specified sampling time.When t = 8 s, on the basis of ensuring that the wind-pv power generation system can meet the power requirements of the load generation, the wind turbine power generation load is reduced to 1. 03 kW and the Pw is reduced to 1.03 kW. At the same time, photovoltaic power generation is carried out. At this time, Ps increases to 0. 46 kW.