基于SMES协同去磁的双馈风力发电机高电压穿越控制策略  

High Voltage Ride Through Control Strategy of Doubly Fed Induction Generator Based on SMES-assisted Demagnetization

作　　者：张瑞祥 潘文林 郑加取 罗沐洋 ZHANG Rui-xiang;PAN Wen-lin;ZHENG jia-qu;LUO Mu-yang(School of Electrical and Information Technology,Yunnan Minzu University,Kunming 650500,China;School of Mathematics and Computer Science,Yunnan Minzu University,Kunming 650500,China;Liangshan Power Supply Company of State Grid Sichuan Electric Power Company,Xichang 615000,China)

机构地区：[1]云南民族大学电气信息工程学院,云南昆明650500 [2]数学与计算机科学学院,云南昆明650500 [3]国网四川省电力公司凉山供电公司,四川西昌615000

出　　处：《水电能源科学》2021年第8期185-189,152,共6页Water Resources and Power

基　　金：国家自然科学基金项目(61363022)。

摘　　要：针对风电场双馈感应式发电机(DFIG)在遭受电网电压暂升扰动而脱网运行的问题,从DFIG在暂升扰动下定子磁链暂态行为出发,分析磁链序分量在转子侧相互叠加导致DFIG难以完成高电压穿越(HVRT)的机理过程,为解决传统去磁控制存在裕度有限不能应对严重暂升扰动,且响应时间缓慢问题,提出了超导磁储能系统(SMES)协同去磁控制的方法,在去磁电流削弱磁链直流分量与负序分量的同时,SMES协同向DFIG转子侧快速注入无功电流,帮助电网电压恢复,实现DFIG在遭受严重暂升扰动下的高电压穿越。在Matlab/Simulink中搭建双馈感应发电机与超导磁储能系统协同控制仿真模型,验证了在对称暂升扰动和不对称暂升扰动下所提方案均能实现DFIG高电压穿越。In order to solve the problem of wind farm DFIG off grid operation when it is subject to grid voltage transient disturbance,this paper starts from the transient behavior of the stator flux linkage under the swelling disturbance of DFIG,and analyzes the mechanism process that DFIG is difficult to complete high voltage ride through(HVRT)due to the superposition of sequence components of flux linkage at rotor side.When the margin is limited,it can,t deal with the serious transient disturbance,and the response time is slow.A method combining the demagnetization control with SMES is proposed.When the demagnetization current weakens the DC component and negative sequence component of the flux linkage,SMES cooperatively injects reactive current to the rotor side of DFIG to restore the grid voltage,so as to realize DFIG under severe transient disturbance HVRT.In Matlab/Simulink,the simulation model of DFIG and SMES is built to verify that the proposed scheme can realize DFIG high voltage ride through under symmetrical and asymmetric transient disturbances.

关 键 词：双馈感应发电机 高电压穿越 超导磁储能系统 去磁控制 

分 类 号：TM306[电气工程—电机]