基于本地模式的DFIG风电场无功控制策略  

Local Mode DFIG Wind Farm Reactive Power Control Strategy

作　　者：杜兴伟 闫帅榜 王娟[2] 崔金兰[2] 李武龙 DU Xingwei;YAN Shuaibang;WANG Juan;CUI Jinlan;LI Wulong(State Grid Henan Electric Power Supply Company,Zhengzhou 450018,Henan,China;State Grid Zhengzhou Electric Power Supply Company,Zhengzhou 450000,Henan,China;Beijing Zhongheng Borui Digital Electric Technology Company,Beijing 100085,China)

机构地区：[1]国网河南省电力公司,河南郑州450018 [2]国网郑州供电公司,河南郑州450000 [3]北京中恒博瑞数字电力科技有限公司,北京100085

出　　处：《电气传动》2020年第7期59-63,共5页Electric Drive

摘　　要：针对目前风电场无功调节能力不足现状,提出了一种基于本地模式DFIG无功控制策略。针对根据DFIG定转子电流和静态稳定极限确定了DFIG的无功输出极限,从直流电压波动角度得到二者之间的优先级。在风电场无功电压损耗计算的基础上,给出了基于定子电压和输出功率的无功给定参考函数的本地模式无功控制策略。通过DIgSILENT/Power Factory算例对比了机组单位功率因数运行和本地模式DFIG无功控制策略运行方式的结果,验证了所提控制策略的有效性。For solving wind farm reactive power weak regulation ability,a local mode DFIG reactive power control strategy was proposed.DFIG reactive power capacity limit was deduced from rotor and stator current as well as steady stability limit,and the priority of DFIG grid side converter and stator reactive power generation was given on the basis of DC link voltage fluctuation.According to wind farm reactive power loss calculation results,a local mode reactive power control strategy was proposed.Both constant power factor and wind farm local reactive power control strategy were simulated by DIgSILENT/Power Factory,which verify the effectiveness of local mode reactive power control strategy.

关 键 词：双馈异步发电机 网侧变流器 无功控制 功率因数调整 DIgSILENT/Power Factory 

分 类 号：TM28[一般工业技术—材料科学与工程]