Published by Mohamed Arbi KHLIFI1, Marwa Ben Slimene2,Department of Electrical Engineering, Faculty Engineering, Islamic University of Madinah, Madinah Monawarah, (1)Department of Computer Science and Engineering, College of Computer Science and Engineering, University of Haʼil, Haʼil, (2) Abstract. Almost all residential air conditioners in KSA are inverter air conditioners in which a AC motor is drivenContinue reading “Efficient Off Grid Solar Powered DC Air Conditioning System”
Category Archives: Case Studies
Diagnostics of Transformer Insulation by Frequency Domain Spectroscopy
Published by Miroslav GUTTEN, Daniel KORENCIAK, Peter BRNCAL, Viktor CEFER, University of Zilina, Slovakia Abstract. The paper deals with the diagnostics of insulation oil-paper in high-voltage transformers by frequency diagnostic spectroscopy. The first part of paper deals with the base information about diagnostics of power transformers. In this part are presented differently insulating methods, forContinue reading “Diagnostics of Transformer Insulation by Frequency Domain Spectroscopy”
Damping of Vibration in an Electric Drive System with a Long Elastic Coupling
Published by Andrzej POPENDA, Czestochowa University of Technology Abstract. In the paper the uncomplicated structure of the active limiter of current reference for a BLDC motor control system is proposed. The limiter allows for uninterruptible operation of a speed controller due to the automatically adjusted rate of change of angular velocity reference depending on actualContinue reading “Damping of Vibration in an Electric Drive System with a Long Elastic Coupling”
Determination of the Resistance of a Grounding System with Application of Finite Element Method
Published by Abdelkader BOUDERBALLA1, Boubakeur ZEGNINI2, Tahar SEGHIER2,Abderrahmane TALEB Higher Normal School (ENS) of Laghouat (1), Amar TELIDJI University of Laghouat (2) Abstract. The protection of the equipment, the safety of persons and the continuity of the electrical supply are the main objectives of the grounding system. For its precise design, the possible potential distributionContinue reading “Determination of the Resistance of a Grounding System with Application of Finite Element Method”
Direct-Phase Variable Modelling and Analysis of Five-Phase Synchronous Reluctance Motor for Direct-on-Line Starting
Published by Gideon UMOH1, Chinedu OBE2, Cosmas OGBUKA2, George EKPO3, Emeka OBE2, Department of Electrical Engineering, Maritime Academy of Nigeria, Oron, Akwa-Ibom State, Nigeria(1),Department of Electrical Engineering, University of Nigeria, Nsukka, Enugu State, Nigeria(2)Department of Electrical and Electronic Engineering, Akwa Ibom State Polytechnic, Ikot Osurua, Nigeria(3) Abstract. The direct-phase variable (DPV) model of a five-phaseContinue reading “Direct-Phase Variable Modelling and Analysis of Five-Phase Synchronous Reluctance Motor for Direct-on-Line Starting”
Wind Farms in the Process of Voltage Regulation in the Power System
Published by Ľubomír BEŇA1, Paweł KUT2,Rzeszow University of Technology, Faculty of Electrical and Computer Engineering (1)Rzeszow University of Technology, Faculty of Civil and Environmental Engineering and Architecture (2) Abstract. The large number of wind farms in the power system makes it possible to use them in the process of voltage regulation in the nodes toContinue reading “Wind Farms in the Process of Voltage Regulation in the Power System”
Analysis of the Impact of a Wind Farm on the Quality of Electricity in the Distribution Grid
Published by Joanna KOZIEŁ, Grzegorz KOMARZYNIEC, Andrzej WAC-WŁODARCZYK, Ryszard GOLEMAN, Department of Electrical Engineering and Electrotechnologies, Lublin University of Technology Abstract. The article presents the characteristics of the net power of a wind farm as a function of wind speed, and lists the factors determining the selection of a wind farm. Classification of large windContinue reading “Analysis of the Impact of a Wind Farm on the Quality of Electricity in the Distribution Grid”
Impedance-Differential Relay as a Transmission Line Fault Locator
Published by Justyna HERLENDER, Jan IŻYKOWSKI, Eugeniusz ROSOŁOWSKI, Wroclaw University of Science and Technology, Department of Electrical Power Engineering Abstract. This paper deals with analysis of impedance-differential protection applied to locating faults on power transmission line. Based on the voltage and current measurements at both line ends, the differential impedance is calculated. It enables toContinue reading “Impedance-Differential Relay as a Transmission Line Fault Locator”
Excitation Type and Results of Simulated Electric Field Distribution in MV Cable Termination
Published by Maciej CIUBA1, Michał WOJCIECHOWSKI1, Maciej OWSIŃSKI2, Michał BORECKI1,Warsaw University of Technology, Koszykowa 75, 00-662 Warszawa, Poland (1)Institute of Power Engineering – Research Institute, Mory 8, 01-330 Warszawa, Poland (2) Abstract. The presented article discusses the differences in the results of the electric field simulation in a medium voltage heat-shrinkable cable termination with theContinue reading “Excitation Type and Results of Simulated Electric Field Distribution in MV Cable Termination”
Influence of Dispersed Generation on Reliability of Electric Network
Published by Juliya MALOGULKO, Svyatoslav VYSHNEVSKY , Iryna KOTYLKO, Natalia SOBCHUK, Vinnitsa National Technical University Abstract. The article analyzes the pace of increase in the generation of photovoltaic stations in the context of the combined electricity system of Ukraine and the energy supply company of PJSC “Vinnytsyaoblenergo”. An analysis of existing regulatory documents regulating theContinue reading “Influence of Dispersed Generation on Reliability of Electric Network”
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