2013 Cost of Data Center Outages

Published by Ponemon Institute LLC, December 2013. Ponemon Institute© Research Report is Sponsored by Emerson Network Power. Part 1. Executive Summary Ponemon Institute and Emerson Network Power are pleased to present the results of the 2013 Cost of Data Center Outages. First conducted in 2010, the purpose of this benchmark study is to determine theContinue reading “2013 Cost of Data Center Outages”

Power Quality (Thailand) Co., Ltd. Instrument Rental by Dranetz

February 15th, 2021 Portable Power Quality Meters HDPQ Xplorer / Power Xplorer with Accessories Per Week: THB 18,000 Per Month: THB 64,800 HDPQ Guide / Power Guide with Accessories Per Week: THB 16,000 Per Month: THB 57,600 HDPQ Visa / Power Visa with Accessories Per Week: THB 14,000 Per Month: THB 50,400 Energy Platform EP1Continue reading “Power Quality (Thailand) Co., Ltd. Instrument Rental by Dranetz”

Understanding Total Harmonic Distortion

White Paper Published by Cowles Andrus, Communications Specialist, Power Monitors Inc., September 2012 Email: candrus@powermonitors.com ABSTRACT This paper discusses the causes of Total Harmonic Distortion, how it is calculated, measured, and how it can impact a power distribution system. Total Harmonic Distortion (THD) can be a challenging concept because of the complexity of the powerContinue reading “Understanding Total Harmonic Distortion”

EPRI PQ Knowledge Development and Transfer 2020 Year-End Update

January 2021 The EPRI Power Quality Knowledge Development and Transfer supplemental project provides a wealth of high-impact resources in a well-designed, readable, and accessible format. Paramount among these are numerous and highly readable documents covering a wide range of PQ topics, written not only for use by busy PQ professionals, but also to expedite problemContinue reading “EPRI PQ Knowledge Development and Transfer 2020 Year-End Update”

How to Conduct an Energy Audit Using the Energy Platform EP1

White Paper Introduction Sophisticated energy analyzers introduced in the 80s were able to trend and record energy usage and help identify when, where, and how much electrical energy was being used. However, due to limited user-interface capabilities, these analyzers printed to paper tape and tended to be complex to operate. At that time, the costContinue reading “How to Conduct an Energy Audit Using the Energy Platform EP1”

Interaction between Grid-Connected PV systems & LED Lamps: Directions for Further Research on Harmonics and Supraharmonics

Published by Tatiano Busatto, Fahim Abid, Anders Larsson and Math H. J. Bollen, Electric Power Engineering, Luleå University of Technology, Skellefteå 931 87, Sweden Email: tatiano.busatto@ltu.se Gaurav Singh, Department of Electrical and Computer Engineering, Clemson University, Clemson, South Carolina 29634, USA                             Continue reading “Interaction between Grid-Connected PV systems & LED Lamps: Directions for Further Research on Harmonics and Supraharmonics”

The Importance of Good Power Quality

Published by Dr. Kurt Schipman & Dr. François Delincé , ABB Power Quality Products, Belgium ABSTRACT This paper explains the problems that are due to poor Power Quality in electrical systems and shows their possible financial consequences. Power Quality is characterized by parameters that express harmonic pollution, reactive power, and load unbalance. The best possibleContinue reading “The Importance of Good Power Quality”

Voltage Disturbances Flicker Measurement

Published by Zbigniew Hanzelka & Andrzej Bie´n, AGH University of Science and Technology, October 2005 Flicker Measurement Introduction The power supply network voltage varies over time due to perturbations that occur in the processes of electricity generation, transmission, and distribution. Interaction of electrical loads with the network causes further deterioration of the electrical power quality.Continue reading “Voltage Disturbances Flicker Measurement”

Direction of Harmonics & Flicker

Published by Arbiter Systems, Inc.  Enabling Tomorrow’s Technology Today Overview As regulatory authorities impose ever-stricter requirements for power quality, utilities increasingly want to know which customer is imposing harmonics and flicker on the utilities power system. As a result, we are often asked if we can determine the “direction” of harmonic power flow, and whatContinue reading “Direction of Harmonics & Flicker”

References for SARFI PQ Index

Published by Terry Chandler, Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. E-mail: terryc@powerquality.org, terryc@powerquality.co.th FYI, PQView calculates these automatically from the PQView database of all instruments. For more information on PQView, you can visit the blog post PQView & PQView DE System Average RMS (Variation) Frequency represents the average number of specified rms variation measurementContinue reading “References for SARFI PQ Index”