Published by Małgorzata ŁATKA, Marek NOWAK, Rzeszow University of Technology Abstract. The article presents the results of a comparative analysis of the basic indicators characterizing the interruptions in the supply of electricity. On the basis of generally available reports of selected DSOs, a list of selected indicators was prepared over the years. A comparison ofContinue reading “Comparative Analysis of the Indicators that Concern Power Supply Interruptions for Electricity Consumers for the Selected Distribution System”
Author Archives: PQBlog
Incheon Airport Maglev Line
Published by Doh-Young PARK1, Jacek F. GIERAS2,3Korea Institute of Machinery and Materials, Daejeon, Korea (1), UTP University of Science and Technology, Bydgoszcz, Poland (2), Korea Electrotechnology Research Institute, Changwon, Korea (3), Abstract. The paper presents the Incheon Airport Maglev Line (IAML) in South Korea connecting Incheon Airport with Yeongjong Island. The paper focuses on constructionContinue reading “Incheon Airport Maglev Line”
Converter-Fed Electric Vehicle (Car) Drives – A Critical Review
Published by Konrad DĄBAŁA1, Marian P. KAZMIERKOWSKI1,2,The Łukasiewicz Research Network – Electrotechnical Institute, Warsaw (1)Warsaw University of Technology, Faculty Electrical Engineering (2) Abstract In this paper the basic requirements and current developments of converter-fed drives for electric vehicles, particularly for electric cars, are reviewed and compared. The basic parts of the powertrain have been presentedContinue reading “Converter-Fed Electric Vehicle (Car) Drives – A Critical Review”
Improvement of Voltage Stability in the HV Distribution Line using an Active Power Filter
Published by Julian WOSIK1, Marcin HABRYCH2, Bogdan MIEDZIŃSKI2, Grzegorz DEBITA3, Andrzej FIRLIT4, Institute of Innovative Technologies EMAG (1), Wroclaw University of Science and Technology (2), General Tadeusz Kosciuszko Military University of Land Forces (3), AGH University of Science and Technology (4) Abstract. The article explains the reason of a voltage instability in distribution networks basingContinue reading “Improvement of Voltage Stability in the HV Distribution Line using an Active Power Filter”
Understanding Telephone Interference Factor
Published by David Horning, March 2013. Power Monitors, Inc., White Paper: Understanding Telephone Interference Factor Abstract. Harmonic distortion that is produced from power conversion systems can cause interference on analog telephone lines. The degree of telephone interference can be expressed in terms of the Telephone Interference Factor (TIF). This white paper will discuss how interference isContinue reading “Understanding Telephone Interference Factor”
Multi-Servers System with Firebird Database for Automatic Reactive Power Compensation
Published by Marian HYLA, Silesian University of Technology, Department of Power Electronics, Electrical Drives and Robotics Abstract. The paper presents the concept, implementation and operational effects of the multi-servers automatic reactive power compensation system in 6 kV industry electrical power grid. As controlled reactive power compensators were used synchronous motors, capacitors’ banks and passive filtersContinue reading “Multi-Servers System with Firebird Database for Automatic Reactive Power Compensation”
Obtaining Feasibility of Power Flows in the Deregulated Electricity Market Environment
Published by Mariusz DRABECKI, Eugeniusz TOCZYŁOWSKI,Warsaw University of Technology, Institute of Control and Computation Engineering Abstract. In this paper we analyse a power dispatch method for obtaining feasible power flows, both active and reactive power, in terms of satisfying the transmission, voltage level and voltage angles’ constraints, under assumption that supply of electric power isContinue reading “Obtaining Feasibility of Power Flows in the Deregulated Electricity Market Environment”
Steps to Find the Source of Harmonics
Published by David Horning, November 2014. Power Monitors, Inc., White Paper: Steps to Find the Source of Harmonics Abstract. Harmonics are “Non-Linear” current or voltage in an electrical system. Any waveform that deviates from a perfect sine wave has harmonics. Any nonlinear load draws harmonic currents and therefore produces harmonic voltage distortion, by producing non-sinusoidalContinue reading “Steps to Find the Source of Harmonics”
Global Trends of Photovoltaic Energy Usage
Published by Lucjan KURZAK, Building Construction Faculty Czestochowa University of Technology, Poland Abstract. The market of photovoltaics is one of the most dynamically developing sectors of world economy. From the standpoint of the environment, the energy of solar radiation is the most attractive source. Both new materials and technological solutions, growing effectiveness of conversion ofContinue reading “Global Trends of Photovoltaic Energy Usage”
Transformer Inspection and Testing
Published by Alex Roderick, EE Power – Technical Articles: Transformer Inspection and Testing, December 17, 2021. Installing a transformer is more than just connecting the wires, according to the wiring diagram. The first part of the installation process includes an initial inspection and testing of the transformer when it is received from the factory or warehouse.Continue reading “Transformer Inspection and Testing”
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