并网型直驱式永磁同步风力发电系统暂态特性仿真分析  

Simulation and analysis of transient characteristics of grid-connected direct-drive wind power system

作　　者：蔺红[1] 晁勤[1] 

机构地区：[1]新疆大学电气工程学院,新疆乌鲁木齐830047

出　　处：《电力自动化设备》2010年第11期1-5,共5页Electric Power Automation Equipment

基　　金：国家自然科学基金项目(50667002);新疆大学优秀博士生创新项目~~

摘　　要：为了研究并网的大容量直驱式永磁风力发电系统的暂态特性,基于Matlab建立了风速、风轮机、直驱式永磁同步发电机的模型;研究了直驱式风力发电系统全功率双脉宽调制变流器的控制策略及桨距角控制系统。以含风电场的简化电网为例研究了风电场接入电网后,电网电压降落及风电场附近母线发生单相短路、三相短路接地故障时,直驱式永磁风力发电系统的暂态特性;仿真结果表明电网故障时,直驱式永磁风力发电系统可以进行无功功率控制,对电网电压的恢复有积极作用,不向短路点提供短路电流,确保风电系统连续运行,提高了电力系统的安全稳定性。The models of wind speed,wind turbine and D-PMSG（Direct-drive Permanent Magnet Synchronous Generator） are built with Matlab for the transient characteristics research of large-scale grid-connected wind power system.Its full-scale power PWM converter control and pitch angle control are studied.Its transient characteristics are calculated for grid voltage sag,single-phase and three-phase grounding faults near wind farm.Simulative results demonstrate that,during grid faults the D-PMSG wind power system provides reactive power for voltage recovery,has no short-circuit current contribution to short-circuit node,and keeps continuous operation,which enhances the reliability and stability of power system.

关 键 词：直驱式永磁同步发电系统 控制策略 暂态特性 建模 

分 类 号：TM614[电气工程—电力系统及自动化]