Published by Dranetz Technologies, Inc. Below are three situations aviation teams often face, and how the HDPQ Xplorer 400 helps resolve them. Jetway keeps resetting when an aircraft connects What’s happening: During bridge movement or aircraft power-up, the 400 Hz supply dips. Sometimes it is a brief sag, other times a fast transient that trips protection.Continue reading “Practical 400 Hz use Cases for Aviation Teams”
Tag Archives: Power Interruptions
Power Quality Measurements from the Spain – Portugal Blackout
Published by Mr. Thomas Ottosson, Managing Director, Unipower AB, Sweden. Email: thomas.ottosson@unipower.se . Website: unipower.se Source URL: https://pqsynergy.com/assets/files/Power-QualityMeasurementsfromtheSpainPortugalBlackout.pdf
Analysis of Switching Overvoltages and Protection from Atmospheric Overvoltages for 400kV Switchgears in the Kosovo Power System using ATP/EMTP
Published by 1. Bahri PREBREZA, 2. Nuri BERISHA1*, 3. Bashkim STATOVCI, Faculty of Electrical and Computer Engineering, University of PrishtinaORCID: 1. 0000-0003-1950-026X; 2. 0000-0001-8615-637X; 3. 0000-0002-6840-0778 Abstract. Power systems might experience electrical problems or power outages, due to atmospheric discharges. The quality of the protection from atmospheric overvoltages will increase the life of the equipmentContinue reading “Analysis of Switching Overvoltages and Protection from Atmospheric Overvoltages for 400kV Switchgears in the Kosovo Power System using ATP/EMTP”
Test Stand for Testing and Diagnostics of Medium Voltage Vacuum Interrupters
Published by Paweł WĘGIEREK, Michał LECH, Lublin University of Technology, Faculty of Electrical Engineering and Computer Science Abstract. The article presents the detailed construction and capabilities of a research station for the diagnosis and testing of vacuum interrupters used in medium voltage electrical switching devices. The correct functioning of the stand has been confirmed byContinue reading “Test Stand for Testing and Diagnostics of Medium Voltage Vacuum Interrupters”
Bridges to Nowhere: Poor Power Quality Prevents Growth
Published by Civian Kiki Massa and Jay Taneja STIMA Lab, University of Massachusetts, Amherst, USA July 2023 Summary: Access to electricity continues to expand worldwide, but even where people are connected to the power grid, they often face challenges including frequent power outages and, less visibly, intermittent periods where electricity is available but only withContinue reading “Bridges to Nowhere: Poor Power Quality Prevents Growth”
An Analysis of Power Quality Problems and its Mitigation
Published by Shafqat Mughal, Neeten Sharma, Pankhuri Kishore Abstract—Power Quality is a major concern of our modern industries and other consumers. Poor quality of supply will affect the performance of customer equipment such as computers, microprocessors adjustable speed drives, power electronic devices, life saving equipment in hospitals, etc. and result in heavy financial losses toContinue reading “An Analysis of Power Quality Problems and its Mitigation”
Tropical Climate Effects on Corona Power Losses on 275 kV Transmission Lines in the South Sulawesi System
Published by Ikhlas KITTA, Salama MANJANG, Ida RACHMANIAR, Faris MARICARElectrical Engineering Department, Hasanuddin University, Indonesia Abstract. Electricity losses are very dependent on electric current and loss of the corona phenomenon. It is very clear that losses depend on network parameters, load behaviors and climatic factors. South Sulawesi is a tropical climate. This sector must beContinue reading “Tropical Climate Effects on Corona Power Losses on 275 kV Transmission Lines in the South Sulawesi System”
Measurement Characteristics of Voltage in Practice and Possibilities for Improvement of Voltage
Published by Alena OTCENASOVA, Juraj ALTUS, Petr HECKO, Marek ROCH,Slovakia, University of Zilina, Faculty of Electrical Engineering, Department of Power Electrical Systems Abstract. Worsened quality of supplied as well as demanded electricity causes in reality a large financial loss. The main quality parameters monitored today are voltage dips and interruptions. In this context there areContinue reading “Measurement Characteristics of Voltage in Practice and Possibilities for Improvement of Voltage”
Voltage Sag Protection Using a Micro-SMES Device
Published by Electrotek Concepts, Inc., PQSoft Case Study: Voltage Sag Protection Using a Micro-SMES Device, Document ID: PQS0508, Date: September 30, 2005. Abstract: This case study describes the use of a micro superconducting magnetic energy storage (micro-SMES) device to improve power quality at a large semiconductor manufacturing facility by providing short term back-up power during utilityContinue reading “Voltage Sag Protection Using a Micro-SMES Device”
MG Set Provides Voltage Sag Support Voltage Sag Ride-Through
Published by Electrotek Concepts, Inc., PQSoft Case Study: MG Set Provides Voltage Sag Support Voltage Sag Ride-Through, Document ID: PQS0412, Date: December 31, 2004. Abstract: Today’s high-tech computer and multi-media equipment require “clean” electric power protected against normal split-second voltage variations. A technology that has recently received much attention for providing this ride-through is the written-poleContinue reading “MG Set Provides Voltage Sag Support Voltage Sag Ride-Through”
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