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A novel surface-cluster approach towards transient modeling of hydro-turbine governing systems in the start-up process
- Zhang, Hao, Chen, Diyi, Guo, Pengcheng, Luo, Xingqi, George, Aggidis
- Energy conversion and management 2018 v.165 pp. 861-868
- dynamic models, equations, mathematical models, torque, water power
- Transient process, an essential condition for the operation of the hydro-turbine governing system, is critical for the safety and stability of a hydropower station. This research focuses on the transient modeling and dynamic analysis of the hydro-turbine governing system in the start-up process. A novel approach is developed to establish the dynamic model of the hydro-turbine governing system in transient process. The flow equation and torque equation were improved to reflect the dramatic changes of system parameters during the start-up process. As a pioneering work, the effect of guide vane opening law on the dynamic characteristics of the hydro-turbine governing system in the start-up process was investigated by numerical simulations. The results of this research can promote the development of transient modeling and performance improvement of hydro-turbine governing systems in transient process.