哈密—重庆±800千伏特高压直流输电工程投产

Core Insights - The Hami-Chongqing ±800 kV UHVDC project has been put into operation, marking a significant milestone for China's energy infrastructure, particularly in the context of renewable energy transmission and carbon neutrality goals [1][2] Group 1: Project Overview - The Hami-Chongqing project is China's first UHVDC project for sending electricity from a desert renewable energy base, enhancing energy resource development and transmission from Hami [1] - The project spans 2260 kilometers, with a total investment of 28.6 billion yuan, and features a rated voltage of ±800 kV and a capacity of 8 million kW [1] - It supports over 10 million kW of renewable energy transmission from Hami, contributing to a larger scale of over 30 million kW for external transmission from Xinjiang [2] Group 2: Technical and Environmental Challenges - The construction faced significant challenges, including harsh environmental conditions and complex terrain, requiring innovative engineering solutions [2] - New designs were implemented to address high wind areas and corrosive environments, including the use of silane impregnation for corrosion protection [2] - The project aims to enhance the utilization of renewable energy and improve the power supply capacity for Chongqing, especially during peak summer loads [1][2]