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Modern Aspects of Analysis of the Efficient Operation of the Centrifugal Pumps within the Hydropower Facilities with Pumped Storage

In this paper, the authors present a systematized methodology of modelling and analysis of the operating regimes of one of the two main components of pumping units with horizontal shaft - synchronous motor-centrifugal pump assembly - that equips high-power energy pumping stations in hydropower facilities with pumped storage. In this sense, for the centrifugal pumps seen as working machines in electric drive systems, the results obtained following a systematic methodology of modelling and analysis of operating regimes are presented. For solving, algorithms and calculation programs developed in the Mathcad programming environment were designed. For example, a representative case study of one of the three identical double-flow pumps from a high-power energy pumping station from a Hydropower Facility existing in our country (Romania), driven by a horizontal synchronous motor of 6 kV with electromagnetic excitation, was chosen.