Published by Waldemar ZIOMEK, PTI Manitoba Inc., Winnipeg, MB, Canada Abstract. When the primary and secondary voltages are obtained from the same winding, or from two windings which are galvanically connected, such a transformer is called an autotransformer. The paper will focus on fundamentals, design and applications of autotransformers of core-type design. The selected problemsContinue reading “Autotransformers for Power Systems”
Category Archives: Case Studies
Capabilities of Polish Power Plants – Advantages and Threats
Published by Paweł SZMITKOWSKI1, Sylwia ZAKRZEWSKA1, Agnieszka GIL2, Paweł ŚWIDERSKI1Siedlce University, Social Science and Security Institute (1), Siedlce University, Institute of Mathematics and Physics (2) Abstract. The Polish energy infrastructure is very diverse, both in terms of the distribution of power plants in particular regions of the country, as well as the fuels used inContinue reading “Capabilities of Polish Power Plants – Advantages and Threats”
An Experimental Study of Wind Data of a Wind Farm in Kosovo
Published by Sabrije OSMANAJ1, Bukurie HOXHA2, Rexhep SELIMAJ2*1Faculty of Electrical and Computer Engineering, , 2Faculty of Mechanical Engineering, University of Pristina, Republic of Kosovo Abstract. In Kosovo, 97% of energy is generated from lignite-fired power plants. Apart from the energy generation, the combustion process emits around 8000 ktCO2/yr and 1.5 Mt of ash in theContinue reading “An Experimental Study of Wind Data of a Wind Farm in Kosovo”
Application of Additional Grounded Wires in High Voltage Overhead Power Lines to Reduce the Intensity of Electric Field Generated by Phase Wires
Pubsliehd by Jacek GUMIELA1, Dariusz SZTAFROWSKI1 Politechnika Wrocławska, Katedra Energoelektryki (1) Abstract. To minimize interference with the environment it is important to make every effort already at the design stage to spare the trouble associated with additional investment later on. Due to the value of land in urban areas, it is beneficial to take necessaryContinue reading “Application of Additional Grounded Wires in High Voltage Overhead Power Lines to Reduce the Intensity of Electric Field Generated by Phase Wires”
The use of Power Restoration Systems for Automation of Medium Voltage Distribution Grid
Published by Michał KONARSKI, Paweł WĘGIEREK, Lublin University of Technology, Faculty of Electrical Engineering and Computer Science, Lublin, Poland Abstract. The article presents assumptions, characteristics and conclusions of functional tests of a pilot implementation of a power restoration system in one of the Distribution System Operators. The main objective of conducted and described tests wasContinue reading “The use of Power Restoration Systems for Automation of Medium Voltage Distribution Grid”
Effect of Harmonics on Power Transformers: A Practical Demonstration and Analysis
Published by Munther Naif Thiab1, nmunther2@gmail.com, Kaleid waleed abid2, kaleidwaleedabid@gmail.com, Muhideen Abbas Hasan3, muhyabass@gmail.com,1, College of Engineering, University of Anbar, Iraq.2, Renewable Energy Research Center / University of Anbar. Iraq.3, Al-Dour Technical Institute, Northern Technical University, Iraq. Abstract: Voltage and current harmonics arise in the presence of nonlinear loads in the major supply. Moreover, theContinue reading “Effect of Harmonics on Power Transformers: A Practical Demonstration and Analysis”
Selected Aspects of Photovoltaic Power Station Operation in the Power System
Published by Andrzej LANGE1, Marian PASKO2University of Warmia and Mazury, Department of Electrical and Power Engineering, Electronics and Automation (1), Silesian University of Technology, Institute of Electrical Engineering and Computer Science (2) Abstract. This paper presents the results of a five-year study of a 1 MW photovoltaic power station in the Warmia and Mazury Province.Continue reading “Selected Aspects of Photovoltaic Power Station Operation in the Power System”
Wind Plant IEEE Std. 519 Compliance Evaluation
Published by Electrotek Concepts, Inc., PQSoft Case Study: Wind Plant IEEE Std. 519 Compliance Evaluation, Document ID: PQS1201, Date: January 25, 2012. Abstract: This case study presents the results for a wind plant substation IEEE Std. 519 harmonic measurement compliance evaluation. The wind plant substation supplied 65 wind turbine generators and the power quality monitor wasContinue reading “Wind Plant IEEE Std. 519 Compliance Evaluation”
A 3 kV DC Electric Traction System Modernisation for Increased Speed and Trains Power Demand – Problems of Analysis and Synthesis
Published by Adam SZELĄG, Tadeusz MACIOŁEK, Politechnika Warszawska, Instytut Maszyn Elektrycznych Abstract. A 3 kV DC supply system, used on railways in Poland, since 1936, has power delivery capacity that allows reaching by trains a maximum speed of 250 km/h. Currently, the maximum trains service speed on Polish railway is 160 km/h, although speed recordContinue reading “A 3 kV DC Electric Traction System Modernisation for Increased Speed and Trains Power Demand – Problems of Analysis and Synthesis”
Seasonality Effect on Working and Prediction of the Production of Electricity in Onshore Wind Farm
Published by Mateusz DUTKA1, Bogusław ŚWIĄTEK1, AGH University of Science and Technology, Department of Power Electronics and Energy Control Systems (1) Abstract. This paper describes relevant issues of the energy prediction from onshore wind farms. The use of a neural network to forecast wind power production and its resistance to changing seasons is examined. DifferentContinue reading “Seasonality Effect on Working and Prediction of the Production of Electricity in Onshore Wind Farm”
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