<abstract xmlns="http://www.w3.org/1999/xhtml">

This paper investigates the energy-efficient resource allocation algorithm for a massive multiple input multiple output (MIMO) system, in which each base station adapts the number of antennas to the daily load profile. Our paper examines the effect of two user location distribution (ULD) models, on the energy-efficiency (EE) of load adaptive masive MIMO system. We propose a resource allocation strategy to adapt the number of antennas based on tracking variations of ULD and cell loading maximizing the EE. We also evaluate impact of cell size, available bandwidth and output power level of the BS on EE at different cell loading.
</abstract>

Resource Allocation and Impact Analysis of the System Parameters on Performance in Multi-Cell Massive MIMO Networks

<abstract xmlns="http://www.w3.org/1999/xhtml">

This paper describes the power transformer, its basic mode of operation, parts, and construction. Equivalent circuit parameters are defined, and the methods of their determination are explained. A model of the transformer in Simulink was made and the process of its production is described. The created transformer model was then simulated through open and short circuit experiments. The values of the parameters obtained by the simulation were compared with the actual values and conclusions were drawn. The main goal of this work is to determine the precision of the operation of the transformer model in Simulink, and based on the obtained results, the same model can be used in algorithms for checking the operation of the entire power system.
</abstract>

Equivalent Circuit Parameters for Power Transformer and Implementation of Open and Short Circuit Test Simulation in Matlab (SIMULINK)

<abstract xmlns="http://www.w3.org/1999/xhtml">

Phase unbalance is a common issue encountered in LV electricity distribution networks, caused by uneven allocation of single-phase loads among phases. This paper analyses a part of a real LV distribution network, situated in Bosnia and Herzegovina. The impact of single-phase customers and single-phase charging of electric vehicles was analysed. To reduce unbalance and improve the voltage profiles, Phase Balance Optimization in DIgSILENT PowerFactory software was performed in six scenarios with different customer and electric vehicle unbalance. The goal was to find a method with the least number of changes in the customer and electric vehicle phase connection that fits within defined limits of voltage variations and voltage unbalance of a European norm for power quality (EN 50160). Results showed that all analysed scenarios were improved, with reference to voltage variation and voltage unbalance values, and were found acceptable by the limits from standard EN 50160.
</abstract>

Phase Balance Optimization of Customers and Electric Vehicles in a Real Low Voltage Electricity Distribution Network

<abstract xmlns="http://www.w3.org/1999/xhtml">

The paper describes the impact of the load increase caused by the connection of electric vehicle (EV) charging stations in the power distribution network. The power distribution network model was created using the professional software tool DIgSILENT PowerFactory (DPF). Analyses were carried out for the cases of connecting a different number of EV charging stations to 0.4 kV busbars of distribution transformer stations (TS). The results of voltage conditions and loading of the most loaded distribution substations are shown. Increasing the load results in an increase in losses in the network, which is particularly significant today since the prices of electrical energy on the market are currently at historically high levels. Distribution System Operator (DSO) should pay attention to the problem of losses increase in the network, and in addition to classic solutions in strengthening the network, the DSO should also consider modern solutions such as the flexibility of new consumers.
</abstract>

Impact of Charging Stations for Electric Vehicles on the Power Distribution Network

<abstract xmlns="http://www.w3.org/1999/xhtml">

In the past couple of years, the integration of electrical vehicles (EV) in the power system has been capturing the attention of many researchers, which has led to this being a frequently analysed topic in scientific papers and seminars. Some of the main parameters related to power quality that are observed, while integrating EVs, are voltage variations and voltage unbalance. The low-voltage rural network, of a small settlement located on the outskirts of Zavidovici, has been modelled for the purpose of this paper. Several cases were considered. As the first base case, an analysis was performed when there were no connected vehicles in the network, then the case with 20% penetration, 35% penetration, and 80% vehicle penetration. Practical analysis was done in DIgSILENT Power Factory software. It has been concluded that electrical vehicles cause a voltage drop in the network, while at the same time causing an increase in voltage unbalances.
</abstract>

Analysis of Unsymmetrical Customer and Electric Vehicle Connection on Voltage Profiles and Voltage Unbalance - Case Study Real Low Voltage Distribution Network

AHEAD OF PRINT

Volume 17 (2023): Issue 2 (December 2023)

Volume 17 (2023): Issue 1 (July 2023)

Volume 17 (2023): Issue s1 (December 2023)

Volume 16 (2022): Issue s1 (December 2022) Advanced materials for engineering applications

Volume 16 (2022): Issue 2 (December 2022)

Volume 16 (2022): Issue 1 (July 2022)

Volume 15 (2021): Issue 2 (December 2021)

Volume 15 (2021): Issue 1 (October 2021) Research trends in interrupting and switching in HV and MV switchgear

Volume 14 (2020): Issue 2 (December 2020)

Volume 14 (2020): Issue s1 (October 2020) Special Issue: Computational, Numerical and Mathematical Methods in Electrical Engineering

Volume 13 (2019): Issue 1 (December 2019)

B&H Electrical Engineering

B&amp;H Electrical Engineering (ISSN: 2566-3143, e-ISSN: 2566-3151) is an international, double blind peer reviewed, non-commercial, open access journal.   The Committee for Bosnia and Herzegovina International Council on Large Electric Systems – CIGRE is the journal publisher.   The aim of the Journal is to publish high-quality papers in a wide area of electrical engineering, computer sciences and information technology.   However, papers in the field of technology, ecology, energy efficiency, industry applications, economy, management and other engineering and social science fields will also be published if they are associated with the field of electrical engineering, computer science and information technology.   Examples of relevant areas can be (but are not limited to):    Power engineering  Automation  Electronics  Robotics  Telecomunications  Signal procesing  Mechatronics  Applied Artificial Inteligence  Energy Engineering  Materials in Electrical Engineering  Applied Mathematics  Biomedical Engineering  Database and Data mining  IT security and Criptology  Data Processing  Buissness Informatics   Type of papers   In addition to original and review scientific papers, the Journal will also consider professional and conference papers.   Language   The Journal accepts only English-language papers.  Publication Fee  No fee is charged from authors for papers accepted for publishing.  Archiving  Sciendo archives the contents of this journal in Portico - digital long-term preservation service of scholarly books, journals and collections.  Plagiarism Policy  The editorial board is participating in a growing community of Similarity Check System's in order to ensure that the content published is original and trustworthy. Similarity Check is a medium that allows for comprehensive manuscripts screening, aimed to eliminate plagiarism and provide a high standard and quality peer-review process. 