Authors: O.V. Pinsker, S.G. Mukhortikov, V.V. Kvitkov, S.I. Koktashov, E.V. Skrebneva

Title of the article: Evaluation of the efficiency of fan speed control of local ventilation of coal mines

Year: 2024, Issue: 4, Pages: 27-36

Branch of knowledge: 2.4.2. Electrotechnical complexes and systems (engineering)

Index UDK: 62-83:621.313.3

DOI: 10.26730/1816-4528-2024-4-27-36

Abstract: Up to half of the electricity consumed by a mining enterprise is spent on ventilation of underground workings, and the share of ventilation costs in the cost of production reaches 30%. The increase in the productivity of mining equipment has led to an increase in the speed of preparatory work, which in mine conditions leads to an accelerated increase in the length of dead-end workings, which, in turn, requires the use of local ventilation fans (LWF), which have greater power, aerodynamic load and adaptability, with aerodynamic characteristics that provide sufficient ventilation at the maximum parameters of the working. The paper evaluates the energy efficiency of the VMP using speed control to control the air supply to the dead-end face. The comparison of energy consumption was made under the condition that the air supply to the face was regulated using a variable frequency drive (VFD) in comparison with throttling control. The approach used made it possible to focus on the comparison of energy and operational assessments of VFD and throttling. The comparison is carried out on the example of the full cycle of development of a real dead-end face, primarily from the point of view of electricity costs. The total economic effect of using a variable frequency drive to control the air supply by a local ventilation fan for a coal mine is determined by: a) reducing the cost of electricity consumed, b) reducing the cost of repair and maintenance of technological equipment and air ducts, c) increasing the level of automation.

Key words: Ventilation of the preparatory workings local ventilation fans variable frequency drive

Receiving date: 16.02.2024

Approval date: 15.10.2024

Publication date: 31.10.2024

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