南方电网技术2024，Vol.18Issue(3)：34-44,11.DOI:10.13648/j.cnki.issn1674-0629.2024.03.004
大规模新能源超远距离送出的柔性直流系统集成设计方案
Integrated Design Scheme of VSC-HVDC System for Large-Scale Renewable Energy Ultra-Long-Distance Transmission
摘要
Abstract
Large-scale renewable energy transmission from desert,Gobi and wilderness to load centers is critical measure to achieve the goals of"Carbon Peak and Carbon Neutrality".Two large-scale renewable energy ultra-long-distance transmission schemes are introduced,including line commutated converter based high voltage direct current(LCC-HVDC)and voltage source convert based high voltage direct current(VSC-HVDC).The two schemes are compared in terms of their applicable scenarios,overvoltage,voltage and reactive power adjustment capabilities,and economy,to highlight their respective advantages and disadvantages.VSC-HVDC is superior in terms of technology and economy.An integrated design scheme of±800 kV/10 GW four-terminal VSC-HVDC system for 10 gigawatt renewable energy ultra-long-distance transmission is proposed,which includes the electrical main wiring,main circuit parameters,coordinated control strategy,and the configuration of AC/DC choppers.Key technologies such as bipolar single-valve and high-low valve scheme selection,AC voltage coordinated control of multi-valve at the sending end,and DC voltage balance control of high-low valve are studied,and the configuration scheme and switching strategy of the configuration of AC/DC choppers are proposed.The effectiveness of the HVDC transmission system scheme is verified through electromagnetic transient simulation.关键词
大规模/新能源/常规直流/柔性直流/超远距离/集成设计Key words
large-scale/renewable energy/LCC-HVDC/VSC-HVDC/ultra-long-distance/integrated design分类
动力与电气工程引用本文复制引用
冯俊杰,辛清明,赵晓斌,傅闯,袁智勇,黄碧月,周月宾,邹常跃,侯婷..大规模新能源超远距离送出的柔性直流系统集成设计方案[J].南方电网技术,2024,18(3):34-44,11.基金项目
国家重点研发计划资助项目(2023YFB2405900) （2023YFB2405900）
中国南方电网有限责任公司科技项目(KYKJXM20210207). Supported by the National Key Research and Development Program of China(2023YFB2405900) （KYKJXM20210207）
the Science and Technology Project of China Southern Power Grid Co.,Ltd.(KYKJXM20210207). （KYKJXM20210207）
