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”
Author Archives: PQBlog
Impact of Capacitor Bank Outrush Reactors on Circuit Breaker Transient Recovery Voltages
Published by Electrotek Concepts, Inc., PQSoft Case Study: Impact of Capacitor Bank Outrush Reactors on Circuit Breaker Transient Recovery Voltages, Document ID: PQS0906, Date: October 15, 2009. Abstract: Current limiting outrush reactors are often installed with utility transmission capacitor banks. These reactors limit the high-magnitude, high-frequency currents that flow when the capacitor bank discharges into aContinue reading “Impact of Capacitor Bank Outrush Reactors on Circuit Breaker Transient Recovery Voltages”
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?”
Wire Wrapping for Low Current Monitoring
Published by Veris Industries, Veris Application Note VN35 – Wire Wrapping for Low Current Monitoring. The information provided herein is intended to supplement the knowledge required of an electrician trained in high voltage installations. There is no intent to foresee all possible variables in individual situations, nor to provide all training needed to perform theseContinue reading “Wire Wrapping for Low Current Monitoring”
High Voltage Test Transformers, Construction, Design and Their Application in HV Testing System
Published by Bogdan TUŁODZIECKI, Electric Apparatuses Factory Zwarpol Ltd. in Warsaw Abstract. In this article were described the most frequently used constructions of high voltage test transformers. There were presented defects, advantages and application of describing constructions. There were described how to design high voltage test transformers and what is important during their design. OnContinue reading “High Voltage Test Transformers, Construction, Design and Their Application in HV Testing System”
Nuisance Tripping of Sensitive Customer Power Electronic Equipment
Published by Electrotek Concepts, Inc., PQSoft Case Study: Nuisance Tripping of Sensitive Customer Power Electronic Equipment, Document ID: PQS1011, Date: October 15, 2010. Abstract: This case study presents an investigation of nuisance tripping of sensitive customer power-electronic equipment during utility capacitor bank switching. The simulations for the analysis were completed using the PSCAD program. The powerContinue reading “Nuisance Tripping of Sensitive Customer Power Electronic Equipment”
Power Quality Monitoring Provides Additional Value
Published by Mark Wojdan, P.E., Date: Aug. 23, 2018. Hydro Ottawa’s central power quality program improves asset reliability while generally lowering operating and maintenance expenses. Many utilities have experienced how labor intensive it is to retrieve and compare power quality (PQ) data from numerous devices and systems, no matter the infrastructure in place. Delays andContinue reading “Power Quality Monitoring Provides Additional Value”
Hybrid Power System of Public Lighting in Smaller Villages
Published by Stanislav MIŠÁK, Jaroslav ŠNOBL, František DOSTÁL, Daniel DIVIŠ, VSB – Technical University of Ostrava Abstract. This article deals with the possibility of public lighting power from renewable resources, it means of a hybrid system consisting of solar panels and wind power. The factual data for dimensioning the system was obtainedby extensive exploration ofContinue reading “Hybrid Power System of Public Lighting in Smaller Villages”
Impact of Protective Relays on Voltage Sag Index
Published by Xinke GAO1,2 , Yapeng LIU3 , Congying WANG4,School of Electronic, Information and Electrical Engineering, Shanghai Jiao Tong University (1),Institute of Information Technology Luoyang Normal College (2),Power Supply of Qingdao Company, Shandong Electric Power Corporation (3),School of foreign language, Shanghai Jiao Tong University (4) Abstract. This paper provides the probability-assessment analysis on the characteristicContinue reading “Impact of Protective Relays on Voltage Sag Index”
General Reference – Utility Capacitor Switching – Common Waveforms
Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Utility Capacitor Switching – Common Waveforms, Document ID: PQS0707, Date: January 1, 2007. Abstract: The application of utility capacitor banks has long been accepted as a necessary step in the efficient design of utility power systems. Also, capacitor switching is generally considered a normal operationContinue reading “General Reference – Utility Capacitor Switching – Common Waveforms”
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