摘要
准东-安徽?1100kV特高压直流输电工程是目前世界上电压等级最高、输送容量最大、送电距离最远、技术水平最先进的"四最"工程,首次实现"直流电压、输送容量、交流网侧电压"的全面提升,创造了新的世界纪录。该文介绍了该工程特点,面临主接线选型、过电压与绝缘配合、换流站空气间隙及户内直流场选型、直流滤波器设计、主设备选型及研制、输电线路空气间隙、外绝缘和电磁环境等多方面的难题,首次创新性地提出可行的解决方案,阐述取得的创新成果,并在工程调试中进行有效验证。工程投产至今,取得了良好的工程和社会效益,工程实践大幅提升我国在国际电力工业界的影响力和话语权。
The Zhundong-Anhui ±1100 kV UHVDC(ultra-high voltage direct current) transmission project is currently the world’s "four most" project with the highest voltage level, the largest transmission capacity, the longest transmission distance, and the most advanced technology. It has realized fully enhancement in DC voltage, transmission capacity, and the voltages of connected AC systems, from the UHVDC pilot project,it has created many world records. This paper introduced the characteristics of the project. Feasible solutions were put forward in face of multiple problems such as main circuit scheme, DC filter design, overvoltage and insulation coordination, indoor DC yard selection, main equipment selection and research, control and protection, electromagnetic environment, etc. The innovation was elaborated and effectively verified in system commissioning. Since the commercial operation of the project, good engineering and social benefits have been achieved. This practice has greatly enhanced China’s influence in the international world.
作者
刘泽洪
LIU Zehong(State Grid Corporation of China,Xicheng District,Beijing 100031,China)
出处
《中国电机工程学报》
EI
CSCD
北大核心
2020年第23期7782-7791,共10页
Proceedings of the CSEE
