Published by Mr. V.Veerapandi, Sr.Manager(ser)/SAS, Email:vpandi@bhelpswr.co.in Introduction One of 200 MW old machine was experienced stator earth fault and the unit was tripped when the load was around 154 MW. The stator earth fault was attended on emergency basis and the unit was brought back with minimum possible time. This article covers observations, analysis ofContinue reading “Stator Earth Fault in 200MW Generator – A Case Study”
Tag Archives: Grounding/Earthing
AC Equipment Grounding: Creating a Safe Fault Current Path to Ground
Published by Lorenzo Mari, EE Power – Technical Articles: AC Equipment Grounding: Creating a Safe Fault Current Path to Ground, August 07, 2020. Learn about the merits of the equipment grounding to protect people in faulted AC power systems. Electrical equipment casings should be at earth potential under normal conditions. When a fault occurs in anContinue reading “AC Equipment Grounding: Creating a Safe Fault Current Path to Ground”
How to Improve Resistance to Ground
Published by Lorenzo Mari, EE Power – Technical Articles: How to Improve Resistance to Ground, September 25, 2020. Learn about the methods used to lower the resistance of a grounding electrode When the soil resistivity is high, and the resistance to ground exceeds the required values, specific techniques are useful to decrease it. This article evaluatesContinue reading “How to Improve Resistance to Ground”
System and Equipment Grounding Safety
Published by Alex Roderick, EE Power – Technical Articles: System and Equipment Grounding Safety, August 15, 2021. Grounding is used to provide a safe path for a fault current to flow. Grounding is an integral part of any properly operating electrical system. In residence, grounding protects the occupants by providing a safe pathway for unwanted electricityContinue reading “System and Equipment Grounding Safety”
Single-point and Multi-point Signal Grounding
Published by Lorenzo Mari, EE Power – Technical Articles: Single-point and multi-point Signal Grounding, April 16, 2021. A grounding arrangement must be designed and implemented adequately for the electronic equipment’s proper performance Introduction The main categories for grounding electronic equipment are: • Safety ground (AC and DC power ground) prevents shocks and fire hazards from theContinue reading “Single-point and Multi-point Signal Grounding”
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”
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