Welcome To Our Power Quality Blog
Power Quality Blog has been created by Power Quality (Thailand) Co., Ltd. to share knowledge, and experience in solving power quality challenges. We focus on a wide range of power quality related issues, such as harmonics, transients, voltage variations, flicker, poor power factor, voltage sags and swells, and unbalance electrical loads etc.
PQ Blog also includes case studies, power standards, power protection, PQ meters, PQ technologies, PQSynergy™ papers and much more.
Latest from the Blog
New and revised Standards for Power Quality measurements from IEC and IEEE and their benefit to users of PQ monitoring equipment that is compliant with these new standards general information refer to the actual standard for additional details. IEC 61000-4-30 Class A Edition 3 The IEC 61000-4-30 Class A standard defines the measurement methods, timeContinue reading “Revised IEC and IEEE Standards for PQ Measurements for Users of PQ Monitoring Equipment”
Published by MYRON ZUCKER INC. , Website: http://www.myronzucker.com Definitions Harmonics are multiples of the fundamental frequency of an electrical power system. If, for example, the fundamental frequency is 60 Hz, then the 5th harmonic is five times that frequency, or 300 Hz. Likewise, the 7th harmonic is seven times the fundamental, or 420 Hz, andContinue reading “Application Guide for Solving Harmonic Problems”
Published by Michael Z. Lowenstein, President of Harmonics Ltd., Monroe, Conn. Nov 1st, 2002. To obtain the effective voltage for a system in which voltages of several frequencies are present, you must add the voltages in an rms fashion. Understanding the causes, similarities, and differences between current and voltage distortion will help you pinpoint mostContinue reading “Harmonic Current and Voltage Distortion”
Dranetz Summer 2021 Live Web Training
Dranetz Free Live Web Based ‘How To’ and Informational Training
Dranetz factory product training gives you the head start you need to hit the ground running. You’ve made the best choice by purchasing a Dranetz instruments and software. Now maximize your investment by ensuring you (or your team) have fully optimized the usage of our superior tools.
Join us for one of our live, free, web based training sessions. Each session focuses on ‘how to’ or informational subjects related to the application, setup and operation of our instruments and software. See below for the schedule.
Registration is required and space is limited, so act soon!
July 28th, 2021 – 11am Eastern Time (ET): DranXperT Power Logger Overview & Operators Training
- Introduction to DranXperT – why choose DranXperT
- DranXperT applications
- Configuring/setting up DranXperT
- Viewing DranXperT data in Dran-View XP, Pro, and Enterprise
- Q & A
- August 4th, 2021 – 11am Eastern Time (ET): DranScada SCADA Software Overview & Operators Training
- Introduction to DranScada – why choose DranScada
- DranScada applications
- Compatible meters and monitoring points
- Tour of DranScada – live demonstration
- Q & A
Electrotek® Concepts | PQView®
IEC 61850 on PQView 4!
Utilities know that merging data from devices within several substations, or even across a whole system, can get complicated—especially when you have devices from a variety of vendors. That’s why they know that IEC 61850 is such a powerful method of integrating those communications. PQView 4 supports IEC 61850 communications enabling you to harness these capabilities.
Here’s how it works:
IEC 61850 is an international standard for TCP/IP networked communications with Intelligent Electronic Devices (IED’s) in substations. IEC 61850 uses object-oriented methods that allow for data to be shared between IEDs and software systems using standard communication methods. By using IEC 61850, PQView can acquire real-time and recorded data from IEDs. Data is stored in the PQView database alongside all other data acquired by PQView’s PQDMS. Unlike traditional polled devices, IEDs send measured values to PQView via IEC 61850 Reports.
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500kV Disconnect Switch
High – Voltage Disconnect Switch Arcing
Captured by Neil Brady, the maintenance foreman of the 500 kV Eldorado Substation near Boulder City, Nevada at the time of the event.