Peculiarities of electric power loss calculation in power supply systems with compensating devices

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Authors:

Yu.F.Romaniuk, Cand. Sc. (Tech.), Assoc. Prof., orcid.org/0000-0002-5765-2961, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

O.V.Solomchak, Cand. Sc. (Tech.), Assoc. Prof., orcid.org/0000-0003-1011-1014, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

P.M.Nykolyn, orcid.org/0000-0003-1453-8445, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

U M.Nykolyn, Cand. Sc. (Tech.), orcid.org/0000-0001-9111-1280, Ivano-Frankivsk National Technical University of Oil and Gas, Ivano-Frankivsk, Ukraine, e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

Abstract:

Purpose. Improvement of calculation accuracy of electric power losses in power supply systems of the oil and gas complex with reactive power compensation by applying the method of graphical integration of power losses and the choice of optimum capacity of compensating devices.

Methodology. The improved method for determining the time of the largest losses, taking into account the largest power losses separately from the active and reactive power transmission, has allowed increasing the accuracy of the energy loss determination. The method for determining the optimum capacity of compensating devices is proposed.

Findings. The necessity of taking into account the form of charts of active and reactive capacities and the power of compensating devices during calculation of electric power losses in power supply systems is substantiated. It has been shown that the efficiency of reactive power compensation in order to reduce the power losses significantly decreases with high values of the power factor.

Originality. The method of unregulated compensating devices optimum power calculation is proposed, provided the minimum power losses in the power supply system. The method of electric power loss calculation in power supply systems with compensating devices is improved by means of separate account of active and reactive power components during determination of the time of the largest losses, which allows increasing accuracy and reducing errors of calculations. The structure of the determination method of energy losses in the network is synthesized, which, unlike the existing one, allows taking into account the influence of the difference in the maxima of active and reactive load on the accuracy of calculations and optimizing the power of compensating devices.

Practical value. Improved accuracy of calculation of electricity losses. Selection of optimal power of unregulated compensating devices, which corresponds to the minimum power losses in the power supply.

References.

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5. Romaniuk, Y. F., & Solomchak, O. V. (2019). Application of the method of Lagrange’s undetermined multipliers in determination of optimal reactive power compensation. The current stage of development of scientific and technological progress’ 2019, SWorld. Retrieved from https://www.sworld.com.ua/index.php/ru/ge7-5/31224-ge7-030.

6. Solomchak, O. V., & Solomchak, A. O. (2017). The choice of the optimal variant of compensation of reactive power at the 35/10 kV district substation, which feeds the trunk line. International scientific and technical journal “Modern problems of electric power engineering and automation”, 192-195. Retrieved from http://jour.fea.kpi.ua/article/download/130406/126028.

7. Kulyk, V., Burykin, O., & Pirniak, V. (2018). Comprehensive evaluation of the effectiveness of installing the reactive power sourcies in distribution electric grids. Visnyk Kyyivskoho Natsionalnoho Universytetu Tekhnolohii ta Dyzainu. Seriya Tekhnichni Nauky, 4(124), 103-111. DOI:10.30857/1813-6796.2018.4.11.

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9. Kulyk, V. V., & Pirnyak, V. M. (2017). Optimization of the flow of reactive energy in the distribution electrical networks using the principle of least action. Visnyk Vinnytskoho Politekhnichnoho Instytutu, (6), 71-79.

10. Demov, O. D., Nykytenko, Y. V., & Konoplytskyi, V. A. (2015). Influence of the compensating installations of industrial consumers on decrease in losses in distributive networks of the power supplying companies. Visnyk Vinnytskoho Politekhnichnoho Instytutu, (6), 125-128.

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13. Stanev, R. (2014). Estimation of the impact of distributed energy resources on electrical network power losses. In Electrical Apparatus and Technologies (SIELA) 2014, 18th International Symposium (pp. 1-4). DOI: 10.1109/SIELA.2014.6871890.

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16. Ministry of Fuel and Energy of Ukraine (2018). Method for calculating the payment for the reactive power flow between the transmitting company and its customers. Kyiv: Ministry of Fuel and Energy of Ukraine. Retrieved from https://zakon.rada.gov.ua/laws/show/z0392-18.

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