The largest single capacity photovoltaic base in China has been put into operation
Recently, the 3000 MW photovoltaic project in the Mengxi Ordos coal mining subsidence area, which China Energy Engineering Construction Group participated in, successfully transmitted electricity to Shandong, marking the official commercial operation of China's largest single capacity coal mining subsidence photovoltaic base.
The project is located in Etuokeqian Banner, Ordos City, Inner Mongolia Autonomous Region. It mainly focuses on coal mining subsidence areas and waiting mining areas. It is one of the second batch of large-scale wind and photovoltaic base projects in Shagehuang, China, and a key supporting project of the national "West East Power Transmission" and "Western Development" projects. It is also the largest single capacity coal mining subsidence area photovoltaic base in China, covering an area of about 105000 acres, equivalent to 10000 standard football fields, with over 5.9 million photovoltaic modules laid and an installed capacity of 3000 megawatts. The construction group undertakes the construction of a 500 MW PC project for the third section.
The project follows the concept of "bundling with fire, joint transmission, comprehensive demonstration, and technological leadership", and spans thousands of miles to transmit green electricity from Mengxi to Shandong for consumption. It is expected to generate 5.7 billion kilowatt hours of electricity annually, which can meet the annual electricity needs of 2 million households and solve the electricity demand of a medium-sized city in China. The social, environmental, and economic benefits are significant.
This project is the first large-scale application of flat single axis H-shaped steel piles as flat single axis foundations in China. Compared with precast concrete piles, the pile driving diameter has been reduced from 400 millimeters to 100 millimeters, significantly reducing damage to grassland landforms and making the surrounding ecological environment more friendly. In addition, the application of flat single axis can achieve automatic rotation of photovoltaic panels tracking the sun, greatly improving power generation efficiency.
Within the same area, the project has split more photovoltaic units. When some ground subsidence occurs, the photovoltaic modules can be adjusted more flexibly to ensure that the photovoltaic modules have the best light receiving angle.
The innovative application of the "integrated bracket+component construction" technology in the project is the first of its kind internationally, greatly reducing manual labor and improving installation efficiency by 25%. It has also accumulated valuable experience for the construction of large-scale photovoltaic projects in the Shage Desert area of China. The project also uses a new intelligent cleaning robot to automatically and efficiently clean dust and dirt on photovoltaic panels, ensuring the maintenance of the photovoltaic panel's photothermal conversion efficiency.
Source: China Energy Construction