电力系统自动化2016，Vol.40Issue(21)：53-58,65,7.DOI:10.7500/AEPS20160418015
海上风电场与柔性直流输电系统的新型协调控制策略
Coordinated Control Strategy of Offshore Wind Farms and VSC-based HVDC Transmission Systems
摘要
Abstract
A novel coordinated control strategy for wind farms based on offshore doubly-fed induction generator (DFIG) type integrated into voltage source converter based (VSC-based) high voltage direct current (HVDC) transmission system is proposed.The constant power control strategy based on phase locking loop (PLL) is applied to the sending converter station, which regulates the active power according to the reference from the wind farm.Meanwhile,the droop of the active power and the squared DC voltage is added to active power control loop of the sending converter station to enhance the transient stability of the DC voltage.The synchronized control is applied to the offshore DFIG wind turbines,which can control the amplitude and angle for the offshore AC grid voltage.Compared with the classical fault ride-through(FRT)coordinated control strategy,this novel control strategy can enhance the DC voltage transient stability and is insensitive to communication delay.Meanwhile,the novel control strategy can also achieve low-voltage ride-through in the case of a 3-phase short-circuit at the sending converter station.This paper uses the example of an offshore wind farm integrated into a two-terminal multilevel modular converter (MMC) VSC-based HVDC transmission system as simulation cases to validate the effectiveness and advantages of the novel FRT coordinated control strategy.关键词
柔性直流输电/海上风电场/双馈风力发电机/交流故障穿越/协调控制Key words
VSC-based HVDC transmission/offshore wind farm/DFIG wind turbines/AC fault ride-through (FRT)/coordinated control引用本文复制引用
洪敏,辛焕海,徐晨博,章雷其,甘德强..海上风电场与柔性直流输电系统的新型协调控制策略[J].电力系统自动化,2016,40(21):53-58,65,7.基金项目
国家重点研发计划资助项目(2016YFB0900100)。@@@@This work is supported by National Key Research and Development Program of China(No.2016YFB0900100) （2016YFB0900100）
