为密集如蛛网的输电网络做“外科手术” 攀西电网优化改造工程全面建成投运

Core Insights - The Panxi region is the largest clean energy base in Sichuan and a key area for the national "West-East Power Transmission" strategy [1] - The 500 kV provincial power grid optimization project commenced in November 2022 and is expected to take nearly three years to complete, divided into five phases [2] - The project enhances the internal supply capacity and resilience of the Sichuan and Southwest power grids, ensuring more stable external power delivery and stronger internal supply [1] Group 1 - The Panxi region's clean energy capacity is projected to exceed 50 million kilowatts by the end of 2025, forming a complementary clean energy system of "water, wind, and solar" [1] - The region has a dense transmission network with 46 lines of 500 kV and above, crucial for the power security of Sichuan and the East and Central China regions [1] - The optimization project includes the construction of a new 500 kV substation, 680 kilometers of 500 kV lines, and upgrades to eight substations, involving over 1,000 kilometers of optical cable communication system modifications [2] Group 2 - The project is described as a "precision surgery" for the power grid, facing unprecedented challenges in Sichuan's power grid construction history [3] - The construction involves crossing high-voltage lines, railways, and roads 70 times, with 94% of the route in mountainous areas and significant ice challenges [3] - Innovative technologies have been applied to improve efficiency, achieving a 60% mechanization rate in mountainous areas and reducing the workforce by over 1,100, with a 40% increase in operational efficiency [3]