Abstract
The article is devoted to a topical subject of distributed generation of electrical energy. The cage and skip mine hoists of the iron ore mining enterprise were considered as generators of electrical energy. The purpose of the study is to compare theoretical and experimental data on electricity generation by mine hoisting units of the Sukha Balka PJSK (Kryvyi Rih, Ukraine). The research methods are theoretical ones – on the transformation of the potential energy of a solid body into electrical energy during its movement through a mine shaft, and experimental ones – involving instrumental measurements of the consumption and generation of electrical energy by cage and skip hoists units during industrial operation. Research schedule: collection and processing of information on the operation of the cage and skip hoists of the mine named after Frunze and similar indicators of the cage and skip hoists units of the Yuvileyna mine for the period from September 1 to December 31, 2021. The novelty of the research lies in the instrumental measurement of the electrical parameters of mine hoists in real Ukrainian operating conditions. The most significant results: it was found that the volumes of electricity generation by mine cage hoists significantly exceed the results of skip hoists. The actual indicators of electricity generation by cage hoists units are much lower than the results of theoretical estimates. There is an imbalance between the generation and consumption of energy resources – 9% for the cage elevation of the mine Frunze; about 2% for the cage hoist of the Yuvileyna mine; less than 1% on skip units. It was found that there is a statistically significant correlative relationship between the generation and consumption of electricity by the cage hoist of the mine named after Frunze and no statistically significant relationship between the generation and consumption of electricity by the cage hoist unit of the Yuvileyna mine. The electricity obtained from the daily operation of two cage and two skip units of the Sukha Balka PJSC (approximately 400 kWh) is enough to power 58 average Ukrainian households.
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