Simulation of the electric drive of the shearer to assess the energy efficiency indicators of the power supply system

Abstract

Annotation. This paper considers the problem of electric drive of shearers simulation to assess the indicators of power supply system (PSS) energy efficiency in the context of the introduction of modern devices for controlling the flow of electricity and power. The block diagram of the shearer electric drive simulation model is presented. To take into account fluctuations in the level of consumption of active and reactive power, a model of the executive body of the shearer was used in the work, including a model of the moment of resistance on the auger when cutting. As a re-sult, in the MATLAB Simulink environment, a simulation model of the electric drive of the UKD300 shearer was de-veloped, suitable for assessing the energy efficiency of the electrical complex of mining areas and the feasibility of using modern devices for controlling the flow of electricity and power. As a result of the simulation, it was found that a significant irregularity in the graph of reactive power consumption, caused by repeated short-term operation, makes the use of capacitor units ineffective to compensate for reactive power. It was revealed that the influence of the feed drive on the sinusoidality of the current curve is insignificant, however, in the conditions of further use of frequency control for the shearer cutting drive, it is advisable to use explosion-proof FACTS devices.