Transformation Justification of types of filter compensating devices in 6 kV mine networks with powerful nonlinear electric receivers

Abstract

Abstract In this paper presents the features and disadvantages of networks of mining enterprises with a voltage of 6 kV with high-power thyristor DC electric drives of hoisting installations, made according to the TP-D system. In most of these networks, negative phenomena are observed due to the presence of powerful nonlinear electrical receivers. Various power filters are widely used to eliminate negative phenomena and reduce additional power losses in mine networks. Moreover, the choice of a specific type of filter and its design is a complex multicriteria task. The paper presents an in-depth analysis of various types of power filters, and considers factors that influence the choice of FCD. The disadvantages of various existing methods of selecting FCD are revealed. Justification of the types of filter-compensating devices is based on the application of a multi-criteria approach and optimization of the structure of the FCD using the fuzzy set apparatus. The optimal design of FCD for use in 6 kV mine networks with powerful thyristor DC electric drives of hoisting installations, made according to the TP-D system, has been determined. At the same time, the use of the developed FCD design in 6 kV mine networks will allow to compensate for the most pronounced HH currents and voltages, significantly reduce additional power losses, improve the quality of electrical energy and improve the overall electromagnetic environment.