双馈感应发电机模型与低电压穿越能力分析  

Modeling of Doubly-fed Induction Generator and the Ability of Low Voltage Ride Through

作　　者：王鹏敏[1] 

机构地区：[1]国网山西省电力公司检修公司,太原030032

出　　处：《电力学报》2016年第2期116-120,共5页Journal of Electric Power

摘　　要：阐述了双馈感应风力发电机的三阶简化模型和五阶暂态模型,并在短路故障下进行了暂态稳定性对比。并以五阶暂态模型为基础,采用投入短路棒的保护策略,使并网运行的风电机组具备低电压穿越能力。结果表明,发电机的五阶暂态模型能更准确的计算发电机暂态电流和控制变换器动作特性,更适于进行电力系统暂态稳定性分析。且此法的优点是在故障过程中可以继续向电网提供一定量的有功功率,并较有效地控制无功功率。This paper expounds doubly-fed induction wind generator＇s third-order simplified model and fifth-order transient model,at the same makes the comparison with the transient stability in short circuit fault.Based on the fifth-order transient model,using crowbar protection strategy,in order to make the grid-connected doubly-fed induction generator accord with the grid related technical regulations,with the ability of low voltage ride through.Results show that the fifth-order transient model of generator has accurately calculated the transient current of the generator and control of the converter movement characteristics,is more suitable for the power system transient stability analysis.And the greatest advantage of this method at fault process is capable of providing an amount of active power continuous,and more effective control of reactive power.

关 键 词：双馈感应 发电机模型 低压穿越 短路棒 

分 类 号：TM315[电气工程—电机]