Authors: F.S. Nepsha, V.M. Efremenko

Title of the article: Evaluation of efficiency of optimum voltage regulation in the power supply systems of coal mines

Year: 2018, Issue: 1, Pages: 149-157

Branch of knowledge: Electrical engineering

Index UDK: 621.311:621.316

DOI: 10.26730/1999-4125-2018-1-149-157

Abstract: Optimal voltage regulation in coal mine power supply systems is one of the key tasks, the solution of which can increase energy efficiency of coal mining. Earlier, the authors proposed an algorithm for determining the optimum level of voltage by the criterion of minimum consumption of active power. To test it, the authors of the article developed a program in the MATLAB environment using the MS Excel spreadsheet. The developed program was tested in the framework of the test scheme of the coal mine, which includes discrete and nondi-screte voltage level regulators. As the initial data on the loads, real data were received from one of the Kuzbasscoal mines. To optimize the voltage level, two optimization algorithms were used: the SQP method and the interior point method. The method SQP has shown the best results. In connection with this, this method was finally adopted to implement the optimal voltage regulation. Based on the results of the simulation, it was found that the use of the proposed algorithm will reduce the costs of the coal company to purchase electricity and improve the quality of electricity in terms of "voltage deviation".

Key words: Static load characteristics coal mines voltage regulation optimization energy efficiency improvement voltage regulation system optimization methods SQP interior point

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