Improvement of 6/10 kV Distribution Power Networks Efficiency

: pp. 65 – 72
Received: June 08, 2018
Revised: October 12, 2018
Accepted: November 07, 2018
Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University
Lviv Polytechnic National University

The study focuses on the ways to improve the operation efficiency of 6 kV and 10 kV distribution power networks on the example of the Horodok District Power Network, Lvivoblenergo PJSC (Ukraine). The main drawbacks of these power networks are the poor condition of the electrical equipment and great length and insufficient transmission capacity of the existing 6/10 kV power transmission lines. One of the most serious problems is the fact that the power networks are not prepared for an efficient operation, taking into account the predicted power consumption increase in this area in the near future. The study used a multifactor model, which enabled taking into consideration the power consumption tendencies in the area, industrial growth rate, personal income growth rate and implementation of energy efficiency measures. A computer simulation of steady-state operation modes for probable ways of power networks’ development, including their changeover to 20 kV, was applied. A quantitative characteristic of the technological indices for a set of typical modes was obtained, which made it possible to establish a comparative efficiency of changing over to 20 kV in relation to other options. This is due to the fact that such a change offers a number of specific advantages in terms of the structure and operation efficiency of the distribution power networks, for instance, an increased transmission capacity of the power lines and improved conditions of the normalization of the electrical power quality indices for the consumers.

  1. A. Aguila, J. Wilson. Technical and economic assessment of the implementation of measures for reducing energy losses in distribution systems. IOP Conf. Series: Earth and Environmental Science, 73 (2017) 012018
  2. K. R. Devabalaji, A. M. Imran, T. Yuvaraj, K. Ravi. Power loss minimization in radial distribution system. Energy Procedia, no. 79, pp. 917-923, 2015.
  3. Dikhtiaruk, I.V. The effect of 6-10 kV power networks sectionalisation with automatic breakers on the integral reliability indicators. Electrical Engineering and Industrial Electronics. Technological Audit and Production Reserves. No. 2/1 (28), 2016 pp.35-39. (in Ukrainian)
  4. Rao, R.S., Ravindra, K., Satish, K. and Narasimham, S.V.L. Power loss minimization in distribution system using network reconfiguration in the presence of distributed generation. IEEE Transactions on Power Systems, 28 (1), pp. 317-325, 2013.
  5. R.Gholami, M.Shahabi, M.-R.Haghifam. An efficient optimal capacitor allocation in DG embedded distribution networks with islanding operation capability of micro-grid using a new genetic based algorithm. International Journal of Electrical Power & Energy Systems, Volume 71, October 2015, Pages 335-343.
  6. S. Kalambe and G. Agnihotri, Loss minimization techniques used in distribution network: bibliographical survey, Renew. Sustain. Energy Rev., vol. 29, pp. 184–200, Jan. 2014.
  7. S. Rao Gampa, D. Das. Multi-Objective Approach for Reconfiguration of Distribution Systems with Distributed Generations. Electric Power Components and Systems, Volume 45, 2017, Issue 15, Pages 1678-1690.
  8. A. Rajendran, K. Narayanan Optimal Installation of Different DG Types in Radial Distribution System Considering Load Growth Electric Power Components and Systems, Volume 45, 2017, Issue 7, Pages 739-751.
  9. Singh, A.K. and Parida, S.K., Selection of load buses for DG placement based on loss reduction and voltage improvement sensitivity. In Proc. International Conference on Power Engineering, Energy and Electrical Drives, pp. 1-6, 2011.
  10. Borscevskis О. 20kV Voltage Adaptation Problems in Urban Electrical Networks [E-resource]. URL: (date accessed 12/10/2017).
  11. D.S. Astashev, R.Sh. Bedretdynov, D.A. Kisel, E.N.  Sosnina. 20 kV voltage applications in the Russian distribution power networks. Herald NGIEI. 2015, No. 4, pp. 6 – 9. (in Russian)
  12. Kulyk, V.V. Feasibility study of power network reconstruction with the voltage changeover from 10 kV to 20 kV (the case of Pivdenny DPN, Odesaoblenergo OJSC. / V.V. Kulyk, V.O.Komar, O.B.Burykin // Electrical Networks and Systems. No 4-5. – pp.81-86. (in Ukrainian)
  13. Software package Analysis of Power Networks Operation Modes (APNOM) («АРЕМ»): Copyright to a work No. 13579 Ukraine / O.V. Danyliuk, Yu.V. Opotiak, S.V. Diachenko, A.B. Kozovyi. Date registered: 04/07/2005. (in Ukrainian)
  14. Requirements to designing the power transmission lines of 6-35 kV with coated wires. SOU-N EE 40.1-21677681-83:2013. Kyiv. The Ministry of Energy and Coal Mining of Ukraine. 2013. (in Ukrainian)
Z. Bakhor, A. Kozovyi, H. Lysiak, A. Yatseiko. Improvement of 6/10 kV distribution power networks efficiency. Energy Eng. Control Syst., 2018, Vol. 4, No. 2, pp. 65 – 72.