Published by Si WENRONG, Jin HENG, Huang HUA, Fu CHENZHAO, East China Electric Power Test & Research Institute Company Limited, Shanghai, China Abstract. This paper introduces a new method for overvoltage measurements in 500kV power system using capacitor voltage transformer (CVT). It is realized with a voltage sensor installed within CVT as the low-voltage capacitorContinue reading “Study on a New Method for Overvoltage Measurement using CVT”
Author Archives: PQBlog
Effect of Distribution Feeder Loading on Harmonic Resonance
Published by Electrotek Concepts, Inc., PQSoft Case Study: Effect of Distribution Feeder Loading on Harmonic Resonance, Document ID: PQS0703, Date: July 26, 2007. Abstract: A utility operates 1200 kVAr and 600 kVAr capacitor banks on a 25.56kV distribution feeder. The utility uses frequency scan simulations to determine the effect of the capacitor banks and seasonal loadContinue reading “Effect of Distribution Feeder Loading on Harmonic Resonance”
Power Network Parameters Standards with Implements IEEE-1459 Power Definitions
Published by Andrzej OLENCKI1, Daniel BELICA2, Jarosław MARKIEWICZ3, Piotr MRÓZ4 ,Calmet Spółka z o.o. Zielona Góra (1,2,3), Uniwersytet Zielonogórski (4) Abstract. The development of Polish portable standards of power network parameters and their concepts are presented, taking into account the requirements of the IEEE-1459 standard in the scope of the separation of the fundamental frequencyContinue reading “Power Network Parameters Standards with Implements IEEE-1459 Power Definitions”
Selected Methods for Improving Power Reliability
Published by Krzysztof PRZYSTUPA1, Lublin University of Technology (1) Abstract. The article discusses the problem of the widespread use of devices that require increased quality electric power supply. An example of a practical division of electricity receipts into several categories is shown. Methods of increasing the reliability of power supply are described and the mostContinue reading “Selected Methods for Improving Power Reliability”
Temperature, Overcharge and Short-Circuit Studies of Batteries used in Electric Vehicles
Published by Andrzej ŁEBKOWSKI, Gdynia Maritime University, Department of Ship Automation Abstract. The paper presents the results of temperature and short-circuit research of battery types most commonly used in electric vehicles. Basing on performed tests, the plots of changing internal resistance of lead-acid and lithium batteries are shown. On the basis of conducted short-circuit experimentsContinue reading “Temperature, Overcharge and Short-Circuit Studies of Batteries used in Electric Vehicles”
Development of Electric Systems for Hybrid and Electric Vehicles
Published by Bartłomiej TWOREK, Politechnika Śląska, Instytut Elektrotechniki i Informatyki, Zakład Maszyn Elektrycznych i Inżynierii Elektrycznej w Transporcie Abstract. This article presents improvement concepts of automotive electrical systems. 12-volt electrical systems are heavy and not effective for hybrid and electric vehicles. Author of this article performed study of energy consumption to analyze this problem. ForContinue reading “Development of Electric Systems for Hybrid and Electric Vehicles”
Distribution System Harmonic Evaluation
Published by Electrotek Concepts, Inc., PQSoft Case Study: Distribution System Harmonic Evaluation, Document ID: PQS1013, Date: October 15, 2010. Abstract: This case study presents a utility distribution system harmonic analysis evaluation. The simulations were completed using the SuperHarm program. The analysis included frequency response and harmonic distortion simulations for a 13.2 kV substation and several industrialContinue reading “Distribution System Harmonic Evaluation”
On / Off – Board Chargers for Electric Vehicles
Published by Artur J. MORADEWICZ, Instytut Elektrotechniki Abstract. The element of infrastructure that provides a connection between an electric vehicle (EV) and a depleted battery and electric source that will charge/discharge these batteries is the Electric Vehicle Service Equipment (EVSE). Recently, the interest of electric vehicles and their charging infrastructure has been the subject ofContinue reading “On / Off – Board Chargers for Electric Vehicles”
Operation of Electrical Vehicles Fast Charging Stations in Warsaw – Case Study of InnogyGO! Collecting Point
Published by Krzysztof ZAGRAJEK, Konrad WRÓBLEWSKI(1), Piotr BICZEL(2), Łukasz SOSNOWSKI(3),Warsaw University of Technology, Institute of Electrical Power Engineering (1); Institute of Theory of Electrical Engineering, Measurement and Information Systems (2) ; Innogy Stoen Operator (3) Abstract. The paper presents the problems of operating a fast charging station for electric vehicles in a collecting point ofContinue reading “Operation of Electrical Vehicles Fast Charging Stations in Warsaw – Case Study of InnogyGO! Collecting Point”
Electrical Vehicle Impact on Distribution Network Power Quality
Published by Sampsa KUPARI, Metropolia, Helsinki University of Applied Sciences Abstract: The electrical vehicle form a huge load (and occasionally a generator as well) that is not resistive but possibly of nonlinear character. This may have an effect on distribution network power quality and possibly disturb seriously other consumers. If this is not taken careContinue reading “Electrical Vehicle Impact on Distribution Network Power Quality”
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