To do advanced harmonic analysis using the postprocessing capability of Dran-View 7 (DV7) Enterprise. Note: Use the waveform capture on periodic basis to collect the most useful data but not necessary for normal PQ activity and reports. The steps below give a few examples. Step 1. Open the data file of the site of interestContinue reading “Harmonics Data Analysis with Dran-View 7 (DV7) Enterprise Software”
Author Archives: PQTBlog
Power Quality & Quality of Supply A Global Continuously Developing Engineering Challenge
Published by Terry Chandler, A Power Quality Practitioner ™ for +30 years, Director of Engineering Power Quality Thailand LTD/Power Quality Inc. USA, Consultant for Dranetz Corporation USA (Asia business Unit General Manager) Contact TerryC@powerquality.org What is Power Quality (PQ)? The characteristics of the supply voltage and the electrical system that affect the performance of theContinue reading “Power Quality & Quality of Supply A Global Continuously Developing Engineering Challenge”
Accuracy of Harmonic Voltage Measurements in the Frequency Range up to 5kHz using Conventional Instrument Transformers
Published by Jan Meyer, Robert Stiegler, Matthias Klatt, Technische Universitaet Dresden, Germany (Jan.Meyer@tu-dresden.de) Micheal Elst, RITZ Instrument Transformers GmbH, Germany (Michael.Elst@ritz-international.com) Erik Sperling, PFIFFNER Instrument Transformer Ltd. Switzerland (Erik.Sperling@pwm.ch) 21st International Conference on Electricity Distribution, Frankfurt, 6-9 June 2011 (Paper 0917) Abstract The measurement of harmonic currents and voltages is a key issue e.g. forContinue reading “Accuracy of Harmonic Voltage Measurements in the Frequency Range up to 5kHz using Conventional Instrument Transformers”
IEC Characterize Events Overview
Application note for the Dranetz automatic characterizer in HDPQ portable instruments. Overview The RMS variation characterizer analyzes cyclic records saved in the database and determines which of those records constitute an event based on a selected criterion. The result is a database record that contains the description of the event, detail of the event, andContinue reading “IEC Characterize Events Overview”
Effect of Harmonics from DC Arc Furnace on 115kV Capacitor
Published by Phongphat Waraphok, Provincial Electricity Authority (PEA), Thailand.
The Challenges of Harmonic Measurements to Identify the Source of Harmonic Distortion in a Network
Published by Terry Chandler, A Power Quality Practitioner ™ for 30 years, Director of Engineering Power Quality Thailand LTD/Power Quality Inc. USA,Consultant for Dranetz Corporation USA (Asia business unit General manager) Harmonics defined by multiple standards around the world. IEC 61000-4-7 Class I defines harmonics and how to measure them. IEEE 519-2014 defines harmonic limits.Continue reading “The Challenges of Harmonic Measurements to Identify the Source of Harmonic Distortion in a Network”
Power Quality Causes & Effects with Biomass Power Plant
Published by Danaisak Tangsakha, Provincial Electricity Authority (PEA), Thailand.
Solar Plant in Thailand & its Impact on Power Quality
Published by Panida Boonyaritdachochai, Power Quality Engineer, Power Quality (Thailand) Co., Ltd.
The Study of Medium Voltage Source Change Effect to Voltage Sag in Low Voltage Customer in Distribution System
Published by Nat Songkram, Power Quality Section, Provincial Electricity Authority (PEA), Thailand.
Energy Usage Report for A Small Office Facility
Published by Thaweesak Aranchot, Electrical Engineer, Power Quality (Thailand) Co., Ltd. Plan Measure actual usage of each load for recording a consumption. Then determine a way to reduce the usage without impacting a business efficiency Investigate the actual data comparing with Electricity bill Introduction The energy consumption at PQT was studied to determine\how much energyContinue reading “Energy Usage Report for A Small Office Facility”
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