电力系统自动化Issue(3)：103-109,7.DOI:10.7500/AEPS20150321001
基于 VSC-HVDC 的风电分散并网下垂控制策略
Droop Control Strategy for Wind Power Decentralized Integration Based on VSC-HVDC Systems
摘要
Abstract
With the large-scale development of offshore wind power,the voltage source converter based high voltage direct current(VSC-HVDC) transmission system has received extensive attention in recent years.By introducing the AC voltage droop control,a coordinated multi-terminal grid-connection control strategy for a wind farm AC-dispersed at the sending end based on VSC-HVDC systems is proposed.Based on the traditional control strategy for the flexible HVDC transmission system,the DC voltage control of inverters on the grid side is retained to guarantee system power balance,while AC voltage droop control rather than the original constant-power control is designed for the rectifier on the wind farm side to achieve the advantage of communication-free and reasonable dynamic allocation.Simulation analysis shows that the control strategy proposed is not only able to achieve flexible automatic tracking of rated active power,but also has certain tolerance of load fluctuation and the function of DC/AC fault isolation.And when it comes to power supply for multi-terminal distribution networks by a wind farm AC-dispersed at the sending end,quick power reversal can be achieved if the wind farm is cut out of the system to ensure power supply reliability.And the system is capable of realizing rational allocation of dynamic power automatically among them according to rated ratio,providing effective solutions for coordinated operation of wind farm”s decentralized integration into distribution networks.关键词
柔性直流输电/下垂控制/风电并网/潮流反转/协调运行Key words
voltage source converter based high voltage direct current(VSC-HVDC)transmission/droop control/wind power integration/power reversal/coordinated operation引用本文复制引用
田园园,廖清芬,刘涤尘,彭思成,邹宏亮..基于 VSC-HVDC 的风电分散并网下垂控制策略[J].电力系统自动化,2016,(3):103-109,7.基金项目
国家电网公司科技项目(5211011400BT)。This work is supported by State Grid Corporation of China(No.5211011400BT) （5211011400BT）
