This study addresses the challenges of risk control and parameter compliance during large fluctuation transients in the diversion power generation system of Sri Lanka’s Moragahakanda Reservoir Project. Based on a mathematical model of unsteady flow in pressurized pipelines and the method of characteristics, we investigate the impact of wicket gate opening and closing laws on key parameters, including metal volute pressure, unit speed, and draft tube pressure. Numerical simulations are conducted under various extreme conditions, such as load rejection, load increase, and extreme water levels. The results demonstrate that the optimized straight-line closing and opening laws effectively regulate the system's transient response. The maximum metal volute pressure, maximum speed rise rate, and minimum draft tube pressure all meet the design requirements with significant safety margins, thereby verifying the project's safety and reliability. This research provides a critical reference for the design and operation of similar multi-objective hydropower stations.
Sun et al. (Sun,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: