Published by Piotr PRUSKI, Stefan PASZEK, Silesian University of Technology Abstract. In the paper, there is presented the analysis of disturbance waveforms of a synchronous generator operating in a single-machine power system consisting of a generating unit connected by a high-voltage power line to a bus. There are considered disturbances in the form of symmetricalContinue reading “Analysis of Transient Waveforms in a Power System at Asymmetrical Short-Circuits”
Tag Archives: Grounding/Earthing
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”
Modeling the Transient Response of Lightning Current on Grounding Systems Wind Turbines
Published by Amina DJABOREBBI, Boubakeur ZEGNINI, Djillali MAHI, Amar TELIDJI University of Laghouat, PoBox 37 G, Mkam Laghouat 03000, Algeria. Abstract. The paper deals with transient analysis of grounding systems wind turbines. To improve the accuracy of lightning impact studies on wind power grid generation, it is necessary to develop faster, more accurate simulation toolsContinue reading “Modeling the Transient Response of Lightning Current on Grounding Systems Wind Turbines”
Impedance Models of Multi-Circuit Multi-Voltage Overhead Power Lines
Published by Henryk KOCOT1, Agnieszka DZIENDZIEL1,2, Silesian University of Technology, Institute of Power Engineering and Control Systems (1), PSE Innovations (2) Abstract. The paper discusses aspects related to the modeling of multi-circuit overhead power lines (HV, EHV), in particular their zero models. The article presents a mathematical model of two-voltage three-circuit overhead line in powerContinue reading “Impedance Models of Multi-Circuit Multi-Voltage Overhead Power Lines”
Medium Voltage Switching Transient Induced Potential Transformer Failures; Prediction, Measurement and Practical Solutions
Published by Daniel McDermit1, David D. Shipp2, Thomas J. Dionise3, Visuth Lorch4,1Sr. Project Manager Turner Construction Company Chicago, IL2PE Eaton Electrical Group Power Systems Engineering Warrendale, PA Fellow, IEEE3PE Eaton Electrical Group Power Systems Engineering Warrendale, PA Senior Member, IEEE4Eaton Electrical Group Power Systems Engineering Warrendale, PA Abstract— During commissioning of a large data center,Continue reading “Medium Voltage Switching Transient Induced Potential Transformer Failures; Prediction, Measurement and Practical Solutions”
Substation Grounding Basics: Step, Touch, and Transferred Voltages
Published by Lorenzo Mari, EE Power – Technical Articles: Substation Grounding Basics: Step, Touch, and Transferred Voltages, October 09, 2020. Learn about Earth potential gradients and shock situations in substations. The conduction of high currents to ground in substations due to atmospheric disturbances or equipment failures generates potential gradients on Earth’s surface that are a threatContinue reading “Substation Grounding Basics: Step, Touch, and Transferred Voltages”
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”
How to Reduce the Soil’s Resistivity
Published by Lorenzo Mari, EE Power – Technical Articles: How to Reduce the Soil’s Resistivity, September 28, 2020. Lowering the resistance of a grounding electrode is not always enough to reduce the soil’s resistivity. Reducing the resistivity of the soil around the electrodes can help achieve adequate resistance to the ground. The elements that most affectContinue reading “How to Reduce the Soil’s Resistivity”
Electromagnetic Disturbances Propagation Along a Grounding Grid Subjected to Lightning Currents
Published by Rafael ALIPIO, Renan SEGANTINI, Federal Centre of Technological Education of Minas Gerais Abstract. This paper assesses the transient distribution of potentials along a grounding grid subjected to currents representative of first and subsequent strokes. It is shown that the transient non-uniform distribution of potential along the grounding system may lead to the flowContinue reading “Electromagnetic Disturbances Propagation Along a Grounding Grid Subjected to Lightning Currents”
Power System Grounding: Understanding Lightning Strikes
Published by Lorenzo Mari, EE Power – Technical Articles: Power System Grounding: Understanding Lightning Strikes, November 13, 2020. Learn about the fundamentals of lightning strikes and the risk they pose for electric power systems and operator safety. Lightning is an electrical discharge of the accumulation of electrostatic electricity from cloud to cloud, within a cloud, orContinue reading “Power System Grounding: Understanding Lightning Strikes”
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