Radial hydraulic machinery four-quadrant performance curves dependent on specific speed and applied in transient calculations

29th IAHR Symposium on Hydraulic Machinery and Systems

Giljen, Z.^1 ; Nedeljkovic, M.^2

Business and Technical Development Direct., Sector for New Projects, Montenegro Electric Company, Vuka Karadia 2, Niki, Montenegro^1

Faculty of Mechanical Engineering, Department for Hydraulic Machinery and Energy Systems, Kraljice Marije 16, Belgrade, Serbia^2

关键词: Four quadrant;    Hydropower plants;    Performance curve;    Pump-turbines;    Research analysis;    Specific speed;    Transient calculation;    Transient process;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/240/4/042002/pdf
DOI  :  10.1088/1755-1315/240/4/042002

来源: IOP

【 摘 要 】

The paper presents research analysis of possible analytical relationships that could exist in pointwise data for four-quadrant performance curves of one radial pump and seven pump-turbines for which the authors collected the basic data and performed the calculation. All the performance curves are for different specific speeds. Additionally, the examples of transformation calculation from the four-quadrant curves into Suter form curves shown in [1] -Thorley (1996) and [2] - Stepanoff (1959) have been presented. A numerical model has been developed for the calculation of transient processes in hydropower plants with installed pumps and pump-turbines. As an input data, the analytical relationships found in the previous research analysis have been used, as well as the pointwise curves for various specific speeds. The multi comparison of the results has been made and comprehensive conclusions given.