Energy and Power Engineering

Volume 10, Issue 2 (February 2018)

ISSN Print: 1949-243X   ISSN Online: 1947-3818

Google-based Impact Factor: 1.42  Citations  

Unbalance Level Regulating Algorithm in Power Distribution Networks

HTML  XML Download Download as PDF (Size: 2159KB)  PP. 65-76  
DOI: 10.4236/epe.2018.102005    1,223 Downloads   2,769 Views  Citations

ABSTRACT

The paper dwells on the unified power quality indexes characterizing the phenomenon of voltage unbalance in three-phase systems. Voltage unbalance is one of the commonest occurrences in the town mains of 0.38 kV voltage. The phenomenon describes as inequality of vector magnitude of phase voltage and shearing angle between them. Causes and consequences of the voltage unbalance in distribution networks have been considered. The algorithm, which allows switching one-phase load, has been developed as one of the methods of reducing the unbalance level. The algorithm is written in the function block diagram programming language. For determining the duration and magnitude of the unbalance level it is proposed to introduce the forecasting algorithm. The necessary data for forecasting are accumulated in the course of the algorithm based on the Function Block Diagram. The algorithm example is given for transforming substation of the urban electrical power supply system. The results of the economic efficiency assessment of the algorithm implementation are shown in conclusion. The use of automatic switching of the one-phase load for explored substation allows reducing energy losses (active electric energy by 7.63%; reactive energy by 8.37%). It also allows improving supply quality to a consumer. For explored substation the average zero-sequence unbalance factor has dropped from 3.59% to 2.13%, and the negative-sequence unbalance factor has dropped from 0.61% to 0.36%.

Share and Cite:

Shutov, E. , Turukina, T. and Elfimov, I. (2018) Unbalance Level Regulating Algorithm in Power Distribution Networks. Energy and Power Engineering, 10, 65-76. doi: 10.4236/epe.2018.102005.

Cited by

[1] “Green technologies” elements by the individual residential buildings internal electrical networks operation
… Series: Earth and …, 2022
[2] The calculating asymmetric modes in 0.38 kV electric networks program
AIP Conference …, 2022
[3] The Power Quality Improving and its Losses Reducing with Balancing Devices
IOP Conference Series …, 2022
[4] Decrease of non-symmetry of currents and voltage in 0.38/0.22 kV networks by networking method
2020
[5] The influence of phase load asymmetry on power losses in power distribution network lines of oil and gas enterprises
2018
[6] Вплив несиметрії навантаження фаз ліній розподільчих електричних мереж підприємств нафтогазової галузі на втрати потужності
2018

Copyright © 2025 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.