Reconstruction ofthepower supply system based onanalternative energy source

Abstract

The article presents a solution for the reconstruction of an oil refinery using gas piston power plants. The oil refinery is a structural subdivision of Kogalymneftegaz. The work of the plant is intended for the production of high-quality petroleum products for technological transport of the divisions of Lukoil — Western Siberia LLC in Kogalym, Langepas, Pokachi; in addition, the plant’s products are in demand at other enterprises of the Khanty-Mansiysk region. In the course of the study, the goal was to offer an alternative source of energy for the trouble-free operation of an oil refinery, to ensure the reliability of objects belonging to the first category. Based on the analysis of the existing power supply system of the plant, it was found that the power receivers of the ELOU-AVT-Bitumen plant are provided from two sources of power supply from the Tyumenenergo network, which does not guarantee uninterrupted and trouble-free operation of the plant. The power supply of the refinery is provided with a voltage of 6 kV from Substation No. 7 35/6 kV. Substation No. 7 is powered by 110/35/10 kV Substation Druzhnaya from the medium voltage side via two power feeders Druzhnaya-1 and Druzhnaya-3. In the study, the calculation of loads, short circuit currents was carried out, the necessary power equipment was selected, and a method was proposed for transferring the refinery to power supply from a stationary power plant operated on hydrocarbon gas utilized from the production process. The proposed solution allows: to eliminate the occurrence of emergencies at the refinery due to a power outage; reduce the cost of purchasing electricity and thereby reduce the cost of commercial petroleum products; increase the percentage of hydrocarbon gas utilization by reducing the amount of gas flared.