Ensuring sustainability of the power supply system of mining enterprises in the conditions of war risks

Abstract

In the work, a study of the conditions of normal operation of the power supply system of mining enterprises with limited capacity of the power system was carried out. Based on complex studies, conclusions were drawn about the structure of electrical loads in coal mines, which are characterized by a non-linear and non-symmetric nature. The problem of higher harmonics and interharmonics with limited short-circuit power, which is characteristic of an autonomous power supply system, is highlighted. Stable operation of the power supply system and main consumers is achieved by matching the mode of the generator set with the mode parameters of the load. New dependencies of regime parameters were obtained, which evaluate energy efficiency in complex situations caused by military risks. Experimental studies of voltage quality indicators and energy efficiency in the conditions of power supply systems of coal mines of Ukraine confirmed the adequacy of the proposed analytical models.