Electrical Grounding and Bonding per NEC

Published by Joe Doughney and Lilly Vang, Consulting-Specifying Engineer, Electrical Articles Electrical grounding and bonding per NEC, December 9, 2020. Understanding correct grounding and bonding design and construction is crucial for proper electrical system operation and personnel safety Learning Objectives • Learn the proper electrical grounding terminologies.• Understand National Electrical Code grounding and bonding requirementsContinue reading “Electrical Grounding and Bonding per NEC”

The Basics of Substation Grounding: Parts of the Grounding System

Published by Lorenzo Mari, EE Power – Technical Articles The Basics of Substation Grounding: Parts of the Grounding System, October 02, 2020. Learn about the main parts of a substation grounding system One of the vital aspects of the protection of people and equipment in electrical substations is the provision of an adequate grounding system. TheContinue reading “The Basics of Substation Grounding: Parts of the Grounding System”

Ground Fault Protection Methods of a Generator Stator

Published by Ahmad Rizal SULTAN, Mohd Wazir bin MUSTAFA, Technology University of Malaysia, Faculty of Electrical Engineering Abstract. The type of generator grounding method and the system configuration determine the choice of ground fault protection. Ground fault generator stator can cause serious damage to the generator. Therefore, the total area of the generator stator windingsContinue reading “Ground Fault Protection Methods of a Generator Stator”

Grounding for Noise Reduction in Electronic Systems

Published by Lorenzo Mari, Master of Science degree in Electric Power Engineering, Rensselaer Polytechnic Institute (RPI), EE Power – Technical Articles Grounding for Noise Reduction in Electronic Systems, April 06, 2021. Learn about everyday grounding systems to reduce common-mode noise. Grounding is the primary method of reducing noise pickup. A good grounding and bonding design can solve a considerableContinue reading “Grounding for Noise Reduction in Electronic Systems”

Transient Performance of Interconnected Wind Turbine Grounding Systems

Published by Blagoja MARKOVSKI, Leonid GRCEV, Vesna ARNAUTOVSKI-TOSEVA, Marija KACARSKA,Ss. Cyril and Methodius University of Skopje, Faculty of Electrical Engineering and Information Technologies Abstract. We analyze the transient grounding characteristics of interconnected wind turbine grounding systems, for fast rising current pulses. By increasing the number of wind turbines, influences on harmonic impedance and transient potentialContinue reading “Transient Performance of Interconnected Wind Turbine Grounding Systems”

Industrial Grids with Frequency Inverters and Localization of the Earth Fault

Published by Tomáš SNIEGOŇ, Jiří GURECKY, Department of Electrical Power Engineering, VŠB – TU Ostrava Abstract. This article focuses on industrial grids with frequency inverters and evaluation of the earth fault and its localization. In the first part the system of localization of the earth fault, industrial grids with frequency inverters and typical application inContinue reading “Industrial Grids with Frequency Inverters and Localization of the Earth Fault”

The Influence of Earth Thermal Conductivity on Temperature Profile of 110 kV Electric Power Cable System

Published by Janusz TYKOCKI, The State College of Computer Science and Business Administration in Lomza Abstract. The paper presents the conductivity of the ground effect on the distribution of temperature field in three-phase high-voltage cables, 64/110 kV, depending on the depth of their arrangement in the ground. The simulation uses the finite element method FEM.Continue reading “The Influence of Earth Thermal Conductivity on Temperature Profile of 110 kV Electric Power Cable System”

Temporary Overvoltage and Grounding Transformer Analysis

Published by Electrotek Concepts, Inc., PQSoft Case Study: Temporary Overvoltage and Grounding Transformer Analysis, Document ID: PQS1203, Date: January 25, 2012. Abstract: This case study presents the results for a wind plant temporary overvoltage (TOV) and grounding transformer transient analysis. The case study investigated the potential for excessive temporary overvoltages during single-phase faults on a 34.5Continue reading “Temporary Overvoltage and Grounding Transformer Analysis”

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”