大力开发大规模清洁能源基地是国家"十四五"现代能源体系规划明确的重点任务.针对藏东南地区大规模水电、光伏送出场景,计及新能源基地海拔高、输电走廊受限问题,设计了±800 kV/10 000 MW多直流电压等级混合直流、多直流电压等级柔直和四端混合直流系统送出拓扑.针对沙戈荒地区风电、光伏送出场景,设计了±800 kV/10 000 MW三端柔直、四端柔直和多直流电压等级混合直流系统送出拓扑.最后,在PSCAD/EMTDC仿真平台搭建了各拓扑方案的仿真模型,对比分析了各拓扑的技术特点.通过研究,以期为未来相关工程实践拓扑设计提供参考.
Developing large-scale renewable energy bases is one of the key tasks in the national 14th Five-Year Plan of modern energy systems.Aiming at transmitting large-scale hydropower and photovoltaic power in southeast Tibet,con-sidering the high altitude of the energy base and the limited transmission corridor,we design the topologies of the±800 kV/10 000 MW heterogeneous serial high voltage direct current(HVDC)transmission system,the four-terminal modular multilevel converter(MMC)based HVDC system with multiple DC voltage levels,and the four-terminal hybrid HVDC,respectively.Aiming at transmitting wind power and photovoltaic power in the desert,barren and Gobi areas,we propose the±800 kV/10 000 MW three-terminal MMC-HVDC system,four-terminal MMC-HVDC system,and hetero-geneous serial HVDC system with multiple DC voltage levels.Finally,the simulation models of each topology are built using PSCAD/EMTDC.And the technical characteristics of each topology are compared and analyzed.The research of this paper may provide a reference for the topology design of related engineering practices in the future.
向往;梅晓波;赵峥;郑宽;孟沛彧;文劲宇
强电磁技术全国重点实验室(华中科技大学),武汉 430074||华中科技大学电气与电子工程学院,武汉 430074国网经济技术研究院有限公司,北京 102209
可再生能源并网;柔性直流输电;常规直流输电;换流器拓扑;架空线传输
renewable energy integration;modular multilevel converter-based HVDC;line commutated converter based HVDC;converter topology;overhead line transmission
《高电压技术》 2024 (005)
2052-2066 / 15
国家电网有限公司总部管理科技项目(±800 kV/8 GW特高压柔性直流输电系统设计及关键设备参数研究)(5108-202218280A-2-320-XG).Project supported by Science and Technology Project Managed by the Headquarters of SGCC(±800 kV/8 GW VSC-UHVDC Transmission Sys-tem Design and Key Equipment Parameters Research)(5108-202218280A-2-320-XG).
10.13336/j.1003-6520.hve.20232229
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