双馈风力发电系统空载并网实验研究  

Experimental Research on Idle Load Grid-connection of DFIG Wind Power Generation System

作　　者：邓永生[1] 张文斌[1] 

机构地区：[1]昆明理工大学机电工程学院,云南昆明650500

出　　处：《机械与电子》2017年第4期35-38,共4页Machinery & Electronics

基　　金：昆明理工大学学生课外学术科技创新基金(2015YB017);南方电网公司重点科技项目资助(K-YN2013-175)

摘　　要：针对风力发电机并网冲击电流较大的问题,应用定子电压定向的并网控制策略对双馈风力发电系统空载并网进行研究。在搭载了Compact RIO实时控制器的10kW模拟双馈风力发电系统平台上进行了空载并网实验研究,分析了电网电压与定子电压之间的幅值差、相位差对并网冲击电流的影响。实验结果表明在转子转速由低速向同步转速增加时,冲击电流的值呈现先减后增的过程,相位差对冲击电流的变化率比幅值差对并网冲击电流的变化率平均大10倍以上。Aiming at the problem that the impulse current caused by grid - connection is large,a grid - connection control strategy based on stator voltage oriented vector is applied to study grid - connection without load of double - fed wind power generation system. Experiment of no - load grid - connection is carried out on a 10 kW simulation platform with Compact RIO real time controller for double - fed wind power generation system, the effects of the difference between the grid voltage and stator voltage in ampli-tude, phase on the grid - connection impulse current are analyzed. Experimental results show that the val-ue of impulse current shows a process of reducing and then increasing when the speed of rotor increases from low speed to synchronous speed of generator. Change rate of phase difference to impulse current is 10 times larger than change rate of amplitude difference to impulse current averagely.

关 键 词：双馈发电机 空载并网 冲击电流 定子电压定向 

分 类 号：TM614[电气工程—电力系统及自动化]