Abstract
This work is devoted to intensification of the power efficiency of computerized systems of con-trol by the pumping units group of oil pumping stations of the main lines. The criterion of the energy efficiency is a minimum total energy loss. The goal set can be reached by the develop-ment of algorithms of the energy efficient control. The most important scientific result based on the identification of the mathematical models of the objects controlled is the efficient algorithm for controlling the group of oil pumping units. It allows determining in real time the operation modes of separate pumping units, upon which the total energy losses will be minimal. The sig-nificance of the results obtained consists in the energy losses decrease across the main oil pipe-line during the combined control by the pumping units groups. Their practical significance con-sists in decreasing the cost of oil transportation at the expense of decreasing the energy con-sumed by the pumping units. The main stages of plotting the modes maps were presented of the efficient operation of the pumping units based on the definition of the necessary rotation fre-quencies and positions of the regulating valves. Experimentally was performed the analysis of the operation modes of the pumping unit using different methods for productivity regulation, and their comparative energy efficiency was shown. The experimental data extrapolation was carried out, and, on its basis, the possible economic effect was determined brought by the use of the energy-conserving systems of the controlling the group of pumping systems.
Highlights
The share of oil and gas in the energy balance of industrially developed countries is about 7580 %
The Ukraine main oil line system includes 19 oil pipelines with a diameter of 1220 mm and total length of about 4800 km (e. g., Germany – 3380 km), 51 oil pumping station (OPS), whose operation is ensured by 176 pumping units at a unit productivity to 12500 m3/h
The main oil pipeline is a complicated structure, which consists of separate oil pumping stations with pumping units of various power (Fig. 1)
Summary
The share of oil and gas in the energy balance of industrially developed countries is about 7580 %. The necessity of transportation of significant volumes of oil and gas resulted in the intense development of the pipeline service as the most efficient economically [1]. The Ukraine is a powerful transiting channel of oil and gas. The Ukraine main oil line system includes 19 oil pipelines with a diameter of 1220 mm and total length of about 4800 km G., Germany – 3380 km), 51 oil pumping station (OPS), whose operation is ensured by 176 pumping units at a unit productivity to 12500 m3/h. The system discharge capacity is 114 mln t/year at the input and over 56 mln t/year at the output. The total nominal capacity of eleven reservoir parks of the main oil pipes system is over 1 mln m3
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