摘要
[目的]从2017年开始广东省海上风电进入了高速发展的时期,随着近海浅水区风电场开发的趋于饱和,近海深水区大型海上风电场的建设即将开始。在整个海上风电的设计过程中集电海缆是极为重要的一环,连接风机与升压站的集电线路通过合理的设计可以有效降低电能损耗,减少项目初始投资,提高运行的可靠性。针对海上风电从常规化向大型化的转变,集电海缆的设计亦需要同步做出调整。[方法]基于此,通过技术经济分析,论述了在大型海上风电项目中采用66 kV集电海缆的可能性。[结果]经过对比分析当风机容量达到10 MW及以上,风电场整体装机容量达到1000 MW时,66 kV集电系统的技术、经济效果明显好于目前采用的35 kV系统。[结论]虽然目前国内海上风电领域暂无66 kV集电海缆投运的实际案例,但随着海上风电开发容量的不断增加,中国海上风电的集电系统势必会像英国、德国一样,向着更高电压等级的方向迈进。
[Introduction]Since 2017,offshore wind power in Guangdong province has entered a period of rapid development.As the development of shallow water windfarms tends to be saturated,the construction of large-scale offshore windfarms in deep water areas is about to start.The array submarine cable is an important link in the whole design process of offshore wind power.The array cable connecting the WTG with the offshore substation can effectively reduce the power loss,the initial investment of the project and improve the reliability of operation through reasonable design.In view of the transformation from conventional offshore windfarm to large-scale offshore windfarm,the design of Array submarine cable also needs to be adjusted simultaneously.[Method]Based on this,this paper discussed the possibility of using 66 kV submarine cable in large offshore windfarms with technological and economic analysis.[Result]After comparative analysis,when the WTG capacity reaches 10 MW or more and the wind farm's overall installed capacity reaches 1000 MW,the technical and economic effects of 66 kV array system is obviously better than that of the current 35 kV system.[Conclusion]Although there is no real 66 kV submarine cable case in the current domestic offshore windfarm,with the increasing of offshore windfarm capacity,China's offshore wind array system is bound to move like the UK,Germany,toward a higher voltage class direction.
作者
崔东岭
江春
史忠秋
刘玢
孙宏达
CUI Dongling;JIANG Chun;SHI Zhongqiu;LIU Bin;SUN Hongda(China Datang Corporation Science and Technology Research Institute Co.,Ltd.,Beijing 100400,China;Hengtong Electric Power Industry Group,Suzhou 215000,China;Guangdong Yuedian Yangjiang Offshore Windpower Co.,Ltd.,Yangjiang 529500,China;State Grid Jilin Power Supply Company Co.,Ltd.,Jilin 132001,China;Kunming Power Supply Company of Yunnan Power Grid Co.,Ltd.,Kunming 650000,China)
出处
《南方能源建设》
2020年第2期98-102,共5页
Southern Energy Construction
基金
中国能建广东院科技项目“预制舱式模块化海上升压站技术研究”(EV05541W)。
