摘要
远距离大容量风电场通过柔性直流输电系统(VSC-HVDC)并网将是风电技术发展的重要方向,但按交流并网结构设计的并网系统不能完全体现VSC-HVDC输电的优点。首先分析了多种基于柔性输电技术的风电场新型直流并网接入方案,继而提出风电场内部采用直流母线的新型拓扑结构及适用于此结构的变速直流发电系统(VSDC),然后分析了VSDC的运行控制原理并仿真实现了最大风能跟踪。结论说明基于该结构的新型风力发电系统具有较好的应用前景。
Long-distance high-capacity wind farm connected to the grid through VSC-HVDC power transmission system will be an important direction of the wind power technology development. The grid access solutions designed according to traditional AC grid structure could not fully reflect the advantages of the VSC-HVDC transmission. Several new solutions based on VSC-HVDC were firstly analyzed. For the new topology applied the wind farm internal DC bus, the Variable Speed DC （VSDC） power system that is suitable for those topologies was proposed. The operating control of VSDC was discussed and maximum wind power tracing was realized by simulation. It is clear that new access solutions based on HVDC Flexible has good prospects.
出处
《电测与仪表》
北大核心
2012年第10期60-65,共6页
Electrical Measurement & Instrumentation
基金
国家自然科学基金资助项目(51077068)
江苏省教育厅自然基金资助项目(10KJB70005)
南京工程学院青年基金资助项目(QKJA2010003)
南京工程学院青年基金资助项目(QKJB2011007)
