Analysis of Lightning Current Distribution in the Lightning Protection System (LPS) with using Numerical Simulations

Published by Konrad SOBOLEWSKI, Warsaw University of Technology Abstract. The paper describes the numerical model of a typical lightning protection system (LPS). This model was used to get information’s about lightning current distributions as an effect of direct lightning strike to this protection system. To perform this task was chosen software MATLAB/SIMULINK. With this toolContinue reading “Analysis of Lightning Current Distribution in the Lightning Protection System (LPS) with using Numerical Simulations”

The System for Testing the Resistance to the Surface Discharge and Erosion of the Polymeric Insulators

Published by Tomasz SAMBORSKI, Andrzej ZBROWSKI, Stanisław KOZIOŁ, Instytut Technologii Eksploatacji – Państwowy Instytut Badawczy Abstract. The introduced device allows performance of the research in the rotary testing of the resistance to the surface discharge and erosion of the polymeric insulators according to PN-EN 62217:2007. The applied control system of the operation of the deviceContinue reading “The System for Testing the Resistance to the Surface Discharge and Erosion of the Polymeric Insulators”

Consumers Protection and Monitoring with Microcontroller Based Device for Low-Voltage Distribution Systems

Published by Petre Lucian OGRUTAN1, Lia Elena ACIU1, Dan LOZNEANU1, Ioan ROSCA2,Transilvania University of Brasov, Romania (1), Transilvania Sud Electricity Distribution (2) Abstract. Protection devices against over-voltage and over-currents for low voltage systems are equipped with varistors and gas-discharge tubes around a fuse, having a disconnection time about 200ms. This paper proposes an intelligent protectionContinue reading “Consumers Protection and Monitoring with Microcontroller Based Device for Low-Voltage Distribution Systems”

Protection of Busbar Based on Reed Switches

Published by Mark KLETSEL1, Nariman KABDUALIYEV2, Bauyrzhan MASHRAPOV2, Alexander NEFTISSOV2,National Research Tomsk Polytechnic University (1), Pavlodar State University (2) doi:10.12915/pe.2014.01.21 Abstract. A phase comparison scheme of protection of busbar on the reed switches fixed connections near conductors extending from these busbars which does not require current transformers has been studied. The article provides an analysisContinue reading “Protection of Busbar Based on Reed Switches”

Overhead Line Fault Section Positioning System Based on Wireless Sensor Network

Published by Ai-hua Dong, Xinlin Geng, Yi Yang, Ying Su, Mengyao Li, Henan Polytechnic University Abstract. This paper introduces overhead line fault detection and location system as the core of industrial control computer. The combination of software and hardware, the methods of current rate of change and zero current detection are used, and so theContinue reading “Overhead Line Fault Section Positioning System Based on Wireless Sensor Network”

Electric Shock Hazard Limitation in Water During Lightning Strike

Published by Jarosław WIATER, Białystok University of Technology Abstract: Swimming during a thunderstorm is one of the most dangerous things that can be done. Lightning regularly strikes water, and since water conducts electricity, a nearby lightning strike could kill or injure human being. This paper will present simulation results of scalar potential distribution in waterContinue reading “Electric Shock Hazard Limitation in Water During Lightning Strike”

Hazardous Step Voltage Nearby Pole Exited by High Voltage Surge

Published by Jarosław WIATER, Politechnika Białostocka, Wydział Elektryczny, Katedra Telekomunikacji i Aparatury Elektronicznej Abstract. This paper presents a ground potential rise (GPR) and voltage difference measurement results. Measurements were made for a model of a pole installed in homogeneous ground. The test stand was built in high voltage lab. It allows safe high voltage testingContinue reading “Hazardous Step Voltage Nearby Pole Exited by High Voltage Surge”

Lightning Currents in Low-Voltage Power Systems

Published by Andrzej SOWA, Bialystok University of Technology, Faculty of Electrical Engineering Abstract: Correctness estimation of lightning protection solutions require definition of lightning current distribution in conductive installations entering the structure during direct strike to lightning protection system of this structure. It concerns particularly this part of lightning current, which flows in electric installation. InformationContinue reading “Lightning Currents in Low-Voltage Power Systems”

Energy Efficient Distribution Transformers

Published by Mariusz NAJGEBAUER, Krzysztof CHWASTEK, Jan SZCZYGŁOWSKI,Institute of Power Engineering, Częstochowa University of Technology Abstract. The paper presented the possibilities of improvement in properties of electric distribution transformers through the use of new soft magnetic materials, mainly amorphous alloys, as transformer cores. The properties of amorphous were compared to conventional electrical steel sheets. EconomicContinue reading “Energy Efficient Distribution Transformers”

Stolen Electricity or Gas Meter?

Published by CallMePower | Selectra LLC Has your electricity or gas meter been stolen? Find out here what to do if your meter has been snitched. Why are meters stolen? Electric meters contain electronic components which can be sold on the black market. Copper, an expensive metal with high conductivity, is usually present in electricityContinue reading “Stolen Electricity or Gas Meter?”