Practice of first water filling operation of super-high head diversion channel in YangJiang storage power station

In order to summarize the key points of the first water filling operation of 800-meter-class reinforced concrete waterway, and provide reference for the water filling operation of similar pumped storage power stations in subsequent power stations, this paper summarizes and analyzes the first water filling operation of Yangjiang pumped storage power station from the aspects of waterway characteristics, water filling procedure, operation key points and risk control, and explores the standardized flow of the first water filling operation of the pumped storage power station combined with practice to ensure the first success of water filling. This paper focuses on the optimization and implementation of the reverse water filling scheme of the lower adit in the upstream waterway. At the same time, the problems in the process of water filling operation are analyzed, and improvements and suggestions are put forward.