摘要
海上风电投资成本高、风险大,为提高其经济性,海上风电机组向超大容量化快速发展。全功率变换风电机组成为海上机组的主流,该机组要求变流器的容量与机组容量相匹配,同时对其运行效率、可靠性和可用度提出了更高的要求。采用两电平或三电平变换器并联组成的变流器是海上风电变流器的主流结构,对并联变流系统的优化运行、容错和重构控制可有效提升其效率和可用度,对风电变流器控制的改进也可以使机组主动参与电网频率响应。针对海上风电变流器运行效率和可用度提升技术、风电高比例并网和平价上网的技术需求,综合评述其研究现状和技术趋势。
Offshore wind power investment has the characteristics of high-cost and high-risk, which makes it demanding that offshore wind power should develop towards large capacity. Full converter wind turbine(FCWT) is now the mainstream of offshore wind turbine generator, and FCWT requires that the capacity of converter should match with the capacity of wind turbine generator. Meanwhile,FCWT puts higher requirements for its operation efficiency,reliability and availability. Offshore wind turbine generator which adopts paralleled two-level converter or three-level converter gradually becomes the mainstream for offshore wind turbine converter. Operation efficiency and availability can be significantly improved by the operation optimization, fault tolerance and reconstruction control of the parallel converter system. Modifications can also be implemented for wind turbine converter to enable frequency response ability. This paper comprehensively reviews related research status and technical trends of offshore wind power converters in operational efficiency and availability, as well as the technical requirements for high penetration of wind power and low-cost electricity transaction.
作者
蔡旭
陈根
周党生
张建文
王琰
邵昊舒
王武华
CAI Xu;CHEN Gen;ZHOU Dangsheng;ZHANG Jianwen;WANG Yan;SHAO Haoshu;WANG Wuhua(Wind Power Research Center,School of Electronic Information and Electrical Engineering,Shanghai Jiao Tong University,Minhang District,Shanghai 200240,China;Shenzhen Hopewind Electric Co.,Ltd.,Shenzhen 518055,Guangdong Province,China)
出处
《全球能源互联网》
2019年第2期102-115,共14页
Journal of Global Energy Interconnection
基金
国家自然科学基金面上项目(51677117)~~
关键词
海上风电变流器
效率
可靠性
可用度
offshore wind power converter
efficiency
reliability
availability
