Methodology for selecting the rated parameters of power transformers in the town’s electrical distribution networks in settlements


  • Yu.A. Papaika Dnipro University of Technology, Ukraine
  • I.M. Lutsenko Dnipro University of Technology, Ukraine
  • IE.V Koshelenko Dnipro University of Technology, Ukraine
  • P.S. Tsyhan Dnipro University of Technology, Ukraine



reactive power compensation, loading capacity of the transformer, electrical distribution grids


Purpose. To substantiate a technique of a choice of nominal power of power transformers for increase of  their use efficiency in distributive electric networks of the cities

Methods. Analytical processing of statistical data.

Findings. The paper solves the problem of efficient use of the installed power of transformers, their rational choice in the design of urban electrical networks. It was found that the choice of transformers according to classical methods causes a significant error and an overestimation of the rated power at the design stage. The method of reducing this error was developed for selecting the power of transformers of urban electrical networks. This method takes into account the predicted indicators of the operating modes of the equipment, the type of consumers, the load capacity of the equipment, the parameters of the operating mode and the environment, constant heating time of existing types of transformers that can be accepted for installation, the appropriate level of reactive load compensation.

Originality The scientific novelty lies in the development of  the method for selecting the rated power of power transformers 6 (20) /0.4 kV urban distribution networks by comprehensive consideration of the parameters of typical consumers and their actual structure, which will effectively use transformer equipment for load capacity during the regulated period of their operation.

Practical value. The obtained results show the increase in the efficiency of capital and operating costs by selecting a rational rated power of distribution transformers 6 (20) / 0.4 kV with ensuring the effective use of their load capacity in the conditions of electric grids of cities.

Author Biographies

Yu.A. Papaika, Dnipro University of Technology

Sci.D,  Professor,  Head  of  the  Department  of  Power  Engineering,  Dnipro  University  of  technology, Dnipro

I.M. Lutsenko, Dnipro University of Technology

PhD, Professor of  the  Department  of  Power  Engineering, Dnipro  University  of  technology,  Dnipro

IE.V Koshelenko, Dnipro University of Technology

Assistant of  the  Department  of  Power  Engineering,  Dnipro University of Technology, Dnipro, Ukraine

P.S. Tsyhan, Dnipro University of Technology

Postgrad. St. of  the  Department  of  Power  Engineering,  Dnipro University of Technology, Dnipro, Ukraine


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How to Cite

Papaika, . Y. ., Lutsenko, I., Koshelenko, I., & Tsyhan, P. (2021). Methodology for selecting the rated parameters of power transformers in the town’s electrical distribution networks in settlements. Electrical Engineering and Power Engineering, (2), 33–43.