全功率永磁直驱风电机组暂态稳定性研究  

Transient Modeling and Stability Research of Full Power Direct-Drive Wind Turbine System

作　　者：罗建春[1] 晁勤[1] 袁铁江[1] 罗庆[1] 马洪雨[1] 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830008

出　　处：《电机与控制应用》2013年第4期32-36,共5页Electric machines & control application

基　　金：输配电装备及系统安全与新技术国家重点实验室自主研究项目(2007DA10512711205)

摘　　要：基于矢量解耦控制策略,建立了适用于电力系统暂态稳定分析的直驱风力发电机组在d-q轴坐标下暂态数学模型,其中包含了对直驱风电机组暂态性能有影响的传动链模型;搭建了发电机侧控制策略和网侧控制策略。利用MATLAB/Simulink软件搭建了包含传动链的并网型直驱风力发电机组的暂态仿真模型,对直驱风力发电机组进行暂态稳定性仿真。结果表明:当电网电压骤降时,实现了有功、无功解耦控制;当电网发生故障时,发电机转速、有功功率、无功功率和机端电压有一定的波动;直驱机组直流电压升高,因此风电机组需要对直驱风电机组电力电子元件的保护;当电网电压跌落时,直驱风电机组具有发出无功的能力,有利于故障时电网电压快速恢复,从而提高电力系统的安全和稳定性。Based on the vector decoupling control strategy, the establishment of a suitable for power system transient stability analysis of direct drive wind power generation unit in d-q axis coordinates under transient mathematical model, including the direct drive wind power unit transient performance influential drive-train model. Built generator side control strategy and the network side control strategy. Using MATLAB/Simulink software built drive-train direct drive wind generating set transient simulation model of direct drive wind generating set, which contain drive-train model, for transient stability simulation. The result showed that： when power grid voltage dip, the active and reactive power decoupling control could be available; When a fault happens, the speed and active power, reactive power and voltage of the power generator have certain fluctuation; the unit dc voltage of Direct drive wind power generation rise, so the wind power unit need to direct drive wind generator power electronic component protection; When power grid voltage drop, the direct drive wind power unit has a reactive ability, be helpful for failure power grid voltage quick recovery, so as to improve power system security and stability.

关 键 词：直驱风电机组 传动链 暂态数学模型 暂态稳定性 

分 类 号：TM315[电气工程—电机]