一度水电的“东游记”

Core Viewpoint - The article highlights the significance of the Xiangshang ±800 kV UHVDC transmission project, which enables the long-distance transmission of hydropower from the Yangtze River to Shanghai, showcasing the efficiency and reliability of the system. Group 1: Project Overview - The Xiangshang project connects the Xiangjiaba Hydropower Station to Shanghai, allowing electricity to be transmitted over a distance of 1907 kilometers with minimal loss [1][4]. - The project has achieved a utilization rate of 98.16% by 2025, with continuous operation exceeding 5800 days since its commissioning [6][10]. Group 2: Hydropower Generation - The Xiangjiaba Hydropower Station, with eight 800,000 kW generating units, is a critical component of the project, converting the gravitational potential energy of the river into electrical energy [2][3]. - Despite lower water inflow levels in 2025, the hydropower station is projected to generate 33.7 billion kWh, matching its historical peak output [2]. Group 3: Technological Advancements - The core control systems of the generating units underwent a successful domestic upgrade, achieving a high level of self-sufficiency in components and chips [3]. - The conversion of AC to DC at the Sichuan Fulong Converter Station is essential for efficient long-distance transmission, likened to the heart of a human body [4][10]. Group 4: Operational Excellence - The operational protocols at the converter stations emphasize meticulous procedures, ensuring safety and reliability in power transmission [5][6]. - The project has successfully transmitted approximately 400 billion kWh of clean hydropower to Shanghai since its inception, contributing significantly to the region's energy supply [10]. Group 5: Broader Impact - The project plays a vital role in the "West-to-East Power Transmission" initiative, with Sichuan's total electricity export exceeding 1.9 trillion kWh by 2025, equivalent to the annual electricity consumption of Jiangsu, Zhejiang, and Anhui provinces combined [10]. - The collaboration among various teams along the transmission line reflects a commitment to maintaining a stable and efficient power supply across regions [10].