摘要
轻型高压直流输电系统(VSC-HVDC)是风电技术的重要发展方向。随着风电比重快速增加,电网对风电机组及其并网系统地低电压穿越(LVRT)能力提出了更高的要求。本文首先分析了电压跌落对VSC-HVDC系统和风电机组的影响,继而简要地总结了风电机组LVRT技术,然后对各种适合于VSC-HVDC风电系统的LVRT方案进行了分析评价,并重点讨论了该风电系统的LVRT协调控制技术。
Long-distance large-capacity wind farm connected to the grid by the VSC-HVDC transmission system will be an important trend of the wind power technology development.With the rapid increase in the proportion of wind power,the grid has a higher demand for the Low Voltage Ride-through（LVRT）ability of the wind turbine and its grid systems.The influence of voltage drop on the VSC-HVDC system and wind turbine is firstly analyzed.Meanwhile,the LVRT technology for the wind turbine is summarized briefly.Then,several types of LVRT solutions for the VSC-HVDC based wind power systems are analyzed and evaluated.In the end,the LVRT coordination control methods are mainly discussed.
出处
《电测与仪表》
北大核心
2013年第7期1-6,共6页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(51177015
51077068)
江苏教育厅自然基金资助项目(12KJB470006)
南京工程学院青年基金资助项目(QKJB2011007)
