电力系统自动化2025，Vol.49Issue(7)：126-134,9.DOI:10.7500/AEPS20240901001
基于源网直储一体化的沙戈荒大规模新能源基地外送方案
Transmission Scheme for Large-scale Renewable Energy Bases in Gobi Desert and Other Arid Areas Based on Integration of Source,Grid,DC and Storage
摘要
Abstract
Aimed at the transmission scenario of large-scale renewable energy bases in the Gobi Desert and other arid areas,an ultra-high voltage direct current(UHVDC)transmission scheme for large-scale renewable energy base based on the integration of source,grid,direct current and storage is proposed.The large-scale renewable energy base is divided into zones,and is integrated through multiple low-voltage voltage source converter based high voltage direct current(VSC-HVDC)channels to the UHVDC sending-end converter station.The renewable energy side of the integration channels is equipped with energy storage devices featuring grid-forming control functions to mitigate power fluctuations and support the grid-connected voltage of renewable energy.The UHVDC system adopts line commutated converter based high voltage direct current(LCC-HVDC)at the sending end and VSC-HVDC at the receiving end.The characteristics of the proposed scheme are analyzed in terms of applicable scenarios,operation features,and economic performance.A coordinated control strategy for multiple power electronic converters is also proposed.The feasibility of the proposed scheme is verified through simulations of steady-state and AC/DC transient conditions based on the PSCAD/EMTDC electromagnetic transient simulation platform.关键词
沙戈荒地区/特高压直流/新能源基地/构网型控制/常规直流/柔性直流/储能引用本文复制引用
王宇,姜崇学,宋胜利,杨鹏程,熊凌飞,刘明松..基于源网直储一体化的沙戈荒大规模新能源基地外送方案[J].电力系统自动化,2025,49(7):126-134,9.基金项目
国家自然科学基金资助项目(U2166602). This work is supported by National Natural Science Foundation of China(No.U2166602). （U2166602）
