变速恒频双馈风力发电机组的等值模型和仿真验证  

Equivalent Model and Simulation Verification of Variable Speed Constant Frequency Double Feed Wind Generator

作　　者：李自明[1] 姚秀萍 王海云[1] 常喜强 苗长越 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047 [2]新疆电力调度控制中心,新疆乌鲁木齐830001

出　　处：《电力电容器与无功补偿》2016年第1期91-95,共5页Power Capacitor & Reactive Power Compensation

摘　　要：随着新疆电网对清洁能源建设的大力推进,疆内九大风区也在加大规模开发与建设,风电继续保持着快速增长态势,且呈现出"集中式开发、远距离输送"的发展模式。风电的快速发展对风机的性能及质量等各方面有着更为严格的要求。因此,为研究新疆某大型风电场接入后对电力系统的影响,本文在单台双馈风力发电机的动态数学模型的基础上,由4台变速恒频双馈风力发电机组的实际建模,经过理论推导得出箱式变压器与线路的等值阻抗,搭建出了双馈风力发电机组的等值模型。并以新疆某风电场为例,在不同风速工况下,对风电机组的实际仿真模型和等值模型在MATLAB/SIMULINK软件中进行仿真。由仿真结果可以看出,风电场的等值模型仿真曲线与实际模型的仿真曲线基本完全重合,从而验证了等值模型的正确性。With the great development of clean energy resources in Xinjiang＇s power grid, the scale development and construction is strengthened in nine wind regions of Xinjiang. The wind power still maintains in the fast increase tendency and shows such development mode as ＂centralized development and long-distance transmission＂. The rapid development of wind power has more strict requirements to the wind turbine in such aspects as performance and quality. Therefore, for studying the influence of one large wind farm on the power system after connection, in this paper, the equivalent impedance of cabinet transformer and wire is obtained on the basis dynamic mathematical module of single unit double feed wind generator, the actual simulation of four sets of variable speed constant frequency double-feed wind turbine and also by way of theoretical deduction. The equivalent module of double-feed wind turbine is set up. A certain wind farm in Xinjiang is taken as an example, the actual simulation module and equivalent module of the wind turbine are simulated in MATLAB/SIMULINK software at different wind velocity conditions. It can be seen from the simulation result that the simulation curve of equivalent module of the wind farm and that of the actual module are basically in complete coincidence, thus the correctness of the equivalent module is verified.

关 键 词：双馈风力发电机组 数学模型 等值模型 集电线路 仿真验证 

分 类 号：TM315[电气工程—电机]