特高压多端直流技术的应用及前景分析

Utilization and Prospect Analysis of UHV Multi-Terminal DC Technologies

输电走廊紧张和单一市场消纳能力不足日渐成为限制我国大型能源基地外送和充分消纳的关键问题。特高压多端直流输电适用于多个送端和多个受端间的远距离大容量输电,可节省宝贵的输电走廊,可灵活匹配送受端,有助于解决我国大型能源基地外送面临的输电走廊紧张和单一市场消纳能力不足等问题。特高压多端直流输电代表了未来直流技术发展的一个重要方向。结合乌东德电站送电广东广西特高压多端直流示范工程的设计工作,介绍了特高压多端直流技术的优势、应用情况,并分析了该技术未来的应用前景。

Narrow transmission corridor and limited power consumption ability of a single market have become the key problems to power transmission and consumption of large energy bases in China.UHV multi-terminal DC(UHV-MTDC)technology can meet the requirements of long distance and large capacity power transmission for multiple sending ends and receiving ends.UHV-MTDC can save transmission corridor and match the multiple sending ends and receiving ends flexibly,therefore it will help to solve the power transmission and consumption problems of large energy bases.UHV-MTDC is an important direction of DC technology development in the future.Combining with the design of the demonstration project of UHV-MTDC transmission system from Wudongde hydro plant to Guangdong and Guangxi province,the advantages and utilization situation of UHV-MTDC technologies are introduced and their applications in the future are analyzed.