200万千瓦输送能力 杭州再添电力主动脉

Core Viewpoint - The completion of the 220 kV Yanzhou-Longyin transmission line marks the successful conclusion of the largest 220 kV overhead transmission project in Zhejiang Province, enhancing the power supply capacity and reliability for the region [3]. Group 1: Project Overview - The 220 kV Yanzhou-Longyin double-circuit overhead transmission line spans approximately 37 kilometers and consists of 112 towers, with a maximum transmission capacity of 600,000 kW [3]. - This project is crucial for ensuring power supply during peak summer demand in the Jiande and Tonglu regions [3]. - The entire series of projects has established a "grid-like" multi-loop power network in the western part of Hangzhou, improving the regional power supply reliability to over 99.999% [3]. Group 2: Capacity and Infrastructure - The completion of the project has released the power supply potential of the Yanzhou 500 kV substation, increasing the overall power supply capacity by 2 million kW, supporting the long-term development of the region [3]. - The series of projects includes three major sub-projects, totaling 325 kilometers of new transmission lines and 456 towers, crossing five districts in two cities [3]. Group 3: Environmental and Technological Aspects - The project is located in the mountainous area of western Hangzhou, with 98% of the overhead lines situated in rugged terrain, and has crossed major enterprise power lines ten times [4]. - Advanced technologies such as intelligent cableway systems and Beidou positioning for tower foundations were employed to optimize construction paths, reducing deforestation by over 23 hectares [4]. - The project contributes to the ecological economy of Zhejiang Province and is expected to reduce carbon emissions by 120,000 tons annually, equivalent to planting approximately 660,000 trees [4].