Conclusions
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1.
The possibility of operation of axial-flow pump units in a turbine regime was proved experimentally.
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2.
To provide efficient operation of the PSs in pump and turbine regimes it is expedient to carry out double regulation by means of the runner blades and gate vanes.
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3.
The maximum efficiency values of the model of the PSs withD 1=350 mm are 81.5% in the turbine regime and 86.0% in the pump regime.
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4.
The zones of the optimal efficiency values of the characteristics of the pump and turbine regime do not coincide by 20–25% with respect to the reduced rotational speed. For matching the operation of the unit in the optimal zones of both regimes it is recommended to use a static frequency changer.
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5.
The blade frequency, frequency of revolution, and low-frequency oscillations excited by the vortex line behind the runner are the dominant frequencies of the pressure fluctuation process in turbine regimes with maximum energies.
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Literature cited
V. I. Vissarionov, L. I. Benditkis, A. V. Fomin, et al., “Use of large pumping stations for storage and regulation of energy consumption in a power system,” in: Energy Storage and Ways to Increase the Operating Efficiency of Electric Power Systems and to Save Energy [in Russian], Énergoatomizdat, Moscow (1985).
A. M. Rumyantsev, “Operation of pumps as turbines,” Gidrotekh. Stroit., No. 9 (1949).
V. I. Vissarionov, V. V. Elistratov, and M. M. Mukhammadiev, “Energy studies of pumping stations with bulb units in a storage regime,” Izv. Vyssh. Uchebn. Zaved., Énerget., No. 1 (1987).
V. I. Vissarionov, S. G. Belyaev, and V. V. Elistratov, “Laboratory devices for comprehensive investigations of pumping stations intended for operation in a storage regime,” Trudy LPI, No. 401 (1984).
V. I. Vissarionov, S. G. Belyaev, and A. I. Puzanov, “Use of microcomputers for laboratory studies of turbine-generator units,” Gidrotekh. Stroit., No. 11 (1986).
Additional information
Translated fromGidrotekhnicheskoe Stroitel'stvo, No. 2, pp. 24–27, February, 1989.
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Vissarionov, V.I., Elistratov, V.V. & Mukhammadiev, M.M. Energy and hydrodynamic studies of turbine operating regimes of large pumping stations. Hydrotechnical Construction 23, 84–87 (1989). https://doi.org/10.1007/BF01427931
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DOI: https://doi.org/10.1007/BF01427931