摘要
为提高直驱永磁风电机组的高电压穿越(HVRT)能力,在分析电网电压骤升对直驱风机影响的基础上,提出了一种含超级电容储能的HVRT控制策略。在高电压故障期间,一方面利用超级电容储能吸收直流侧不平衡能量,稳定直流侧电压;另一方面优化网侧变流器控制策略,使之优先输出感性无功功率对故障电网进行无功支撑。在Matlab/Simulink环境中搭建系统仿真模型,对电网电压骤升下传统直驱机组控制策略的动态响应及所提的控制策略进行仿真分析。结果表明,含超级电容储能的HVRT控制策略可以有效提高直驱机组的高电压穿越能力。
In order to improve the high voltage ride through(HVRT)capability of direct-drive permanent magnet synchronous wind turbine generator,a control strategy with super capacitor(SC)was put forward on basis of that symmetric grid voltage swell was how to effect D-PMSG.During the high voltage fault,DC voltage swell was stabled with SC energy storage,besides,to speed up the recovery of faulty power system,control strategy of grid side converter was adjusted to provide the inductive reactive power.A system simulation model was built in Matlab/Simulink environment.Under grid voltage swell,dynamic response of the traditional control strategy and proposed control strategy was simulated and analyzed.The results show that the HVRT control strategy with super-capacitor energy storage can achieve high voltage ride through.
作者
孙谊媊
南东亮
张公生
SUN Yiqian;NAN Dongliang;ZHANG Gongsheng(Power Science Research Institute of Xinjiang Electric Power Company,Urumqi 830011,Xinjiang,China;Engineering Research Center of Education Ministry for Renewable Energy Power Generation and Grid Technology,Xinjiang University,Urumqi 830047,Xinjiang,China)
出处
《电气传动》
北大核心
2018年第10期48-52,84,共6页
Electric Drive
基金
自治区重点实验室项目(2016D03021)
国家自然科学基金(51667020)
关键词
直驱永磁风电机组
超级电容储能
网侧控制策略
高电压穿越
direct-drive permanent magnet synchronous generator(D-PMSG)
super capacitor(SC)energy storage
control stratagy of grid side
high voltage ride through(HVRT)
