基于变桨距控制策略的异步风电机组暂态稳定性研究  

STUDY ON TRANSIENT STABILITY OF WIND TURBINE WITH INDUCTION GENERATOR BASED ON VARIABLE PITCH CONTROL STRATEGY

作　　者：赵斌[1,2] 李辉[1] 韩力[1] Chen Z 

机构地区：[1]重庆大学输配电装备及系统安全与新技术国家重点实验室,重庆400044 [2]四川电力职业技术学院,成都610072 [3]丹麦奥尔堡大学能源技术学院

出　　处：《太阳能学报》2011年第8期1230-1236,共7页Acta Energiae Solaris Sinica

基　　金：国家自然科学基金(50607022);重庆市自然科学基金(2008BB6038);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(2007DA10512710101)

摘　　要：为了提高和改善在电网故障下并网风电机组的暂态稳定性,该文以并网笼型异步风力发电机组为例,考虑风力机传动链柔性带给机组振荡的影响,在典型变桨控制策略的基础上提出了一种增加以风力机转速为控制量的分阶段控制策略。通过建立并网异步风力发电机组的电磁暂态模型,基于Matlab/Simulink仿真平台,应用改进的变桨距控制策略,对电网三相对称短路故障下并网异步风力发电机组的暂态运行特性进行了仿真,并将其结果和多种不同变桨控制策略以及无功补偿策略的结果进行了比较。仿真结果验证了该文提出的变桨距控制策略能有效改善风力发电机组的暂态稳定性。In order to enhance and improve the transient stability of a grid-connected wind turbine generator system under the power grid fault, based on typical pitch control strategy of wind turbine, considering the wind turbine sys- tem oscillation caused by the drive-train shaft flexibility, Based on Matlab/Simulink, electromagnetic transient state models of the wind tubine generator system and the pitch control models were presented, and the transient behaviors of the wind turbine genarator system using the typical and the proposed pitch control strategies were analyzed and compared when the power grid was subjected to a three-phase short-circuit fault. Also the results were compared with using reactive compensation device. The simulation results show that the proposed pitch control strategy can ef- fectively improve the transient stability of wind turbine generator system.

关 键 词：风力发电 异步发电机 暂态稳定性 变桨距控制 传动链柔性 

分 类 号：TB611[一般工业技术—制冷工程]