基于PSCAD的并网型风机建模及仿真

PSCAD based modeling and simulation on grid-connected wind power

建立了包含风速模型、风力机模型、发电机模型和控制系统模型的风力发电机组的整体动态数学模型;应用PSCAD软件,以建立的数学模型为基础搭建了变速恒频风电机组仿真算例;并以短路故障和渐变风干扰为例,对由一台单机容量为2 MW变速恒频风电机组并网后的运行特性进行了仿真研究。仿真结果表明了变速恒频风电机组良好的运行特性及影响该机型风机稳定的因素。

A complete dynamic model for variable speed wind turbines （VSWT） is presented and the model includes wind speed ,wind-turbine and pitch control and generator. Based on the models, a simulation example of VSWT is developed by using PSCAD.Then taking ramp change of wind speed as example,the dynamic characteristics of a VSWT which has capacity of 2 000 kW are simulated.The results show VSWT has good running characteristics as well as show the influence factors on the stable run of similar wind turbines.