±1500 kV特高压直流输电技术前期研究  

Development of Technologies in ±1 500 kV UHV DC Transmission Research

作　　者：李鹏[1] 谷琛[1] 陈东[2] 何慧雯[1] 黄瑞平[1] 谢莉[1] 陈秀娟[1] 丁玉剑[1] 谢龙 

机构地区：[1]电网环境保护国家重点实验室(中国电力科学研究院),北京100192 [2]国网北京经济技术研究院,北京102209 [3]中国电力工程顾问集团中南电力设计院有限公司,武汉430071

出　　处：《高电压技术》2017年第10期3139-3148,共10页High Voltage Engineering

基　　金：国家电网公司科技项目(GYB17201600174)~~

摘　　要：随着国家"一带一路"战略构想的提出,未来电网的发展将有大量跨国联网、跨区联网的需求。同时,随着社会的快速发展,输电走廊占地也将成为制约电网发展的一个重要因素,而更高电压等级特高压直流输电线路可大幅减少线路走廊。这两方面均亟待开展更高电压等级特高压直流输电技术的前期研究。在±800 kV和±1 100kV直流输电技术的基础上,进一步研究±1 500 kV直流输电技术中主接线设计、过电压与绝缘配合、外绝缘特性、电磁环境和雷电防护等关键技术在电压等级进一步提升后面临的问题,为未来更高电压等级的选择提供技术支撑。与±1 100 kV直流输电技术相比,更高电压等级特高压直流可实现更大范围内的能源资源优化配置。With the proposed ＂The Belt and Road＂ strategy,a large number of multinational networking and cross-regional networking will be needed in the development of power grid in the future.In the meantime,since the area of power transmission corridor will also be an important factor to restrict the development of power grid,the UHV DC transmission lines with higher voltage levels are also needed to reduce line corridors dramatically.It is urgent to carry out the early research of UHV DC technology with higher voltage levels because of these two aspects.On the basis of ±800 kV and ±1 100 kV DC transmission technology,we research the key technical challenges in main electric connection design,overvoltage and insulation coordination,external insulation characteristics,electromagnetic environment,and lightning protection with the voltage of ±1 500 kV so as to provide technical supports for future selection of higher voltage levels.UHV DC transmission technology with the voltage higher than ±1 100 kV is an important development of long-distance and large-capacity power transmission technology in the world,which can optimize the energy allocation in larger area compared to ±1 100 kV DC transmission technology.

关 键 词：特高压直流输电 主接线设计 过电压与绝缘配合 外绝缘 电磁环境 雷电防护 

分 类 号：TM721.1[电气工程—电力系统及自动化]