Determination of control stations total power losses and efficiency for electric centrifugal pumps

A mathematical model of control stations total power losses and efficiency for centrifugal pumps feeding submersible motors for the oil extraction was developed. The model makes possible to calculate separate components of these power losses. A simplified, convenient for application model of total power losses and efficiency values is proposed depending on the output current of control stations and the power factor of the submersible motor. Approximation gives a discrepancy from the simulated efficiency of no more than 0.3% in the range of output currents of control stations 0.2 ... 1.0 from the nominal value. The approximation coefficients are easily determined using the software of control stations. The labor intensity is reduced and possibilities of calculations for solving problems of oil production facilities energy optimization are expanded.