Developing Stochastic Model of a Workshop Power Grid

摘要

The article proposes the generator of random voltage changes in electrical networks of enterprises that implements the relationship of the energy – economic model of an asynchronous motor with the external environment. When reproducing voltages on a computer, the amplitudes and phases of significant harmonics, their distribution laws, autocorrelation and cross-correlation functions are taken into account. The formation of voltages from individual harmonics is shown. The statistical regularities of harmonics are obtained as a result of processing the changes in voltages obtained during passive industrial experiments for the conditions of Dneprospetsstal LLC. Analytical expressions for the autocorrelation and cross-correlation functions of harmonics are obtained from individual reference points at which the experimental values and the values calculated from the approximating expression coincide. To implement the obtained static laws on a computer, their digital models and a modeling algorithm have been developed. The simulation results are checked for adequacy to the real process.