Abstract
The introduction of technologies for active-adaptive control of the operating modes of the power supply systems of coal mines can contribute to an increase in the energy efficiency of coal mining. High-response FACTS devices of the second generation can be used for dynamic reactive power compensation, voltage regulation and limitation of current and voltage harmonic components in conditions of sharply variable electrical loads of mining machines at a breakage face. Evaluation of the effectiveness of the implementation of FACTS devices in the power supply systems of coal mines can be performed using simulation methods.This article discusses the main approaches to the development of a simulation model of a power supply system of a coal mine, mining equipment and FACTS devices. The main results of modeling the joint operation of mining machines are shown. Conclusions about the effectiveness of the use of FACTS devices in the extraction area of a coal mine are made.
Highlights
According to the program for the development of the coal industry in Russia for the period up to 2035 [17] the coal demand has to increase by the value up to 13.95%
The program includes the technical re-equipment and intensification of coal production by 2025. The implementation of these plans will lead to an increase in the power consumption of coal mines, and in order to reduce the prime-cost of coal mining, it becomes important to increase the energy efficiency of coal mining
The development of power electronics has led to the introduction into electrical networks of a large number of frequency converters used for frequency regulation of an electric drive, as well as for the design of devices for flexible control of electrical network modes - second generation FACTS devices
Summary
According to the program for the development of the coal industry in Russia for the period up to 2035 [17] the coal demand has to increase by the value up to 13.95% (optimistic scenario). The program includes the technical re-equipment and intensification of coal production by 2025 The implementation of these plans will lead to an increase in the power consumption of coal mines, and in order to reduce the prime-cost of coal mining, it becomes important to increase the energy efficiency of coal mining. To achieve this aim, it is necessary to use modern devices for intelligent control of power flows in power supply systems (PSS) of coal mines, the assessment of the effectiveness of the implementation of which is devoted to this work. Traditional unregulated or step-controlled reactive power compensation devices (RPCD) do not have sufficient operation speed to respond to dynamic electric load, which leads to a decrease in the effectiveness of RPC and voltage regulation in such electrical networks. Despite the fact that the widespread adoption of FACTS devices is hindered by the high price and the lack of a methodology for selecting parameters and sizing of devices for dynamic RPC, currently it is possible to achieve cost-effective solutions for RPC using a combination of dynamic and traditional RPCD [1]
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