基于撬棒保护的双馈风力发电机组低电压穿越控制策略研究  

Based on the crowbar protection to achieve low voltage ridethrough of DFIG control strategy research

作　　者：姚兴佳[1] 董鹤楠[1] 刘颖明[1] 戈阳阳[2] 王海东 

机构地区：[1]沈阳工业大学风能技术研究所 [2]沈阳工业大学研究生学院 [3]内蒙古东部电力有限公司赤峰电业局

出　　处：《可再生能源》2013年第2期52-57,共6页Renewable Energy Resources

基　　金：辽宁省重大攻关计划项目(2011220017)

摘　　要：随着风力发电机组装机容量不断增大,在电网中的渗透率不断提高,电力系统在电网故障导致电压骤降时,对风力发电机组能够不间断运行的能力(低电压穿越能力)提出了更高的要求。文章依据辽宁电力有限公司电力科学研究院风力发电机组低电压穿越抽检测试结果,利用德国电力系统仿真软件DIgSILENT/Power Fac-tory搭建了双馈风力发电机组,提出基于撬棒保护(crowbar protection)的控制策略以实现双馈风力发电机组低电压穿越功能,并通过仿真实验验证电网故障情况下双馈风力发电机组的不间断运行能力,将仿真结果与现场实际测试结果进行比较,验证风力发电机组的控制策略及模型的准确性。With the increasing of installed capacity of wind turbines, and the improving permeability in grid, the power system makes a higher demand on the successive operating ability of wind turbines （low voltage ride-through capacity） when the voltage drops caused by faults. Based on the random test result on low voltage ride-through of double fed wind turbine by Liaoning Electric Power Company Limited Electric Power Research Institute, a double fed wind turbine model is built by use of German power system simulation software--DIgSILENT/Power Factory, a control strategy based on crowbar pro- tection to achieve low voltage ride-through of double fed wind turbines is raised, and the successive op- erating ability of double fed wind turbines is verified by the simulation experiment when the grid is in fault, then comparing the simulation result with the practical test result, the control strategy of wind tur- bines and accuracy of the model are verified.

关 键 词：双馈风力发ca^tft 低电压穿越 撬棒保护 DIGSILENT 

分 类 号：TK6[动力工程及工程热物理—生物能] TQ546[化学工程—煤化学工程]