Published by Terry Chandler, Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. E-mail: terryc@powerquality.org, terryc@powerquality.co.th An example is the Dranetz HDPQ family, the PX-5 family and the 61K family. The IEC standard for frequency measurement calculation and accuracy is This specifies the time of the reference channel is measured for 10 seconds. That value isContinue reading “Frequency Measurements & Data Recorded of PQ Instruments that meet the IEC 61000-4-30 Class A”
Category Archives: Power Quality
Power Quality Issues in Grid Connected Wind Farms (India)
Published by A.D. Thirumoorthy, Energy Consultant Coimbatore, India.
Power Quality Monitoring System at the Consolidated Edison Company of New York
Published by Terry Chandler, Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. E-mail: terryc@powerquality.org Brian Todd, Global Vice President of Sales for Dranetz Technologies, Inc. and General Manager at Electrotek Concepts, Inc. E-mail: btodd@electrotek.com Kevin Kittredge, Senior Power Systems Engineer, Electrotek Concepts, Inc. E-mail: kkittredge@electrotek.com
SAIFI SARFI & SARFI (X) Indexes for Power Reliability & Power Quality
Published by Terry Chandler, Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. E-mail: terryc@powerquality.org
Characterizing Voltage Sag Waveforms using IEEE P1159.2 Algorithms
Published by Dan Sabin, Monitoring System Applications Architect, Electrotek.
Dranetz Portable Instruments Power Visa & HDPQ Visa using Dran-View 7 Software to View the Waveforms & Correct A CT Connection Error
Case 1. Display waveforms of voltage, current and Power before, during and after an event. Case 2. Display waveforms of voltage, current and calculate the power waveform from the data of any waveforms recorded by the instrument. HDPQ waveforms of Voltage, current and Power from 10 cycles of waveform data. Case 3. Display harmonicContinue reading “Dranetz Portable Instruments Power Visa & HDPQ Visa using Dran-View 7 Software to View the Waveforms & Correct A CT Connection Error”
Active Harmonic Mitigation – What the Manufacturers Don’t Tell You!
Published by Tony Hoevenaars, PEng., MIRUS International Inc.
Instrument Transformers for Measuring Power Quality
Published by Johannes Rickmann, Christian Weber, Trench Switzerland. Tobias Schmutzhard, Omicron Austria.
Harmonics Data Analysis with Dran-View 7 (DV7) Enterprise Software
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”
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”