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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

Common Power Quality Waveform Signatures

Published by Electrotek Concepts, Inc., PQSoft Case Study: Common Power Quality Waveform Signatures, Document ID: PQS0901, Date: October 15, 2009. Abstract: Power quality problems encompass a wide range of disturbances and conditions on utility and customer power systems. They include everything from very fast transients (microseconds) to long duration (hours) outages. Problems also include steady stateContinue reading “Common Power Quality Waveform Signatures”

Practical Case Study: Measurement of Power Quality Problems Caused by Common New Loads

Published by M.Sc Marko Pikkarainen, M.Sc Pekka Nevalainen, Dr. Pertti Pakonen, Prof. Pekka Verho, Tampere University of Technology, marko.pikkarainen@tut.fi ABSTRACT Two matters have strongly affected use of energy in Finland during recent years. The one is the greenhouse effect and the other is the energy price which has risen. These points have brought to theContinue reading “Practical Case Study: Measurement of Power Quality Problems Caused by Common New Loads”

General Reference – Using Simulations and Measurements in PQ Analysis

Published by Electrotek Concepts, Inc., PQSoft Case Study: General Reference – Using Simulations and Measurements in PQ Analysis, Document ID: PQS0309, Date: April 16, 2003. Abstract: Simulations provide a convenient means to characterize power quality problems, predict disturbance characteristics, and evaluate possible solutions to problems. They should be performed in conjunction with monitoring efforts and measurementsContinue reading “General Reference – Using Simulations and Measurements in PQ Analysis”

20th Annual PQSynergy™ International Conference & Exhibition 2022

September 14th – 16th, 2022

PQSynergy™ is an international forum to share experiences, requirements, questions, information, customer requirements, problems and solutions in the fast growth area of Quality of Supply (QOS) requirements of sensitive loads, Energy Conservation and Management and Power Quality Monitoring and Solutions.

An excellent networking opportunity in an informal atmosphere with presentations from around the world. Utilities will share their experiences, large power users will share their present and future expectations, and equipment suppliers will share their overall market perspective and their specific solutions for power quality problems.

For more information, please visit the website:




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DRANETZ | Webcasts & Videos

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.

Did you miss the webinar training?

You can watch the full recorded session at:



Please check back periodically for any new addition, training sessions.


PQSynergy™ Papers

PQSynergy™ is an international forum to share experiences, requirements, questions, information, customer requirements, problems and solutions in the fast growth area of quality of supply requirements of sensitive loads, energy conservation and management and power quality monitoring and solutions. 



Electrotek® Concepts | PQView®

What is PQView 4?

Developed in collaboration with EPRI® and Electric Utility partners globally, PQView 4 is the flagship product of Electrotek Concepts, Inc.—built from the ground up to be the best-in-class Power Quality data concentrator and analysis software. PQView can acquire and store data from multiple sources, and provide powerful data analytics and reporting capabilities via a responsive web enabled user interface.

For more information, you can visit electrotek.com

PQView Overview
PQWeb 4 Overview. A quick overview of the powerful data visualization tools available in PQWeb 4.

PQView Editons

PQView 4 is available in three (3) editions: PQView Express, PQView Standard, and PQView Professional.

PQView 4 Express
PQView Express is intended for single-server installation. The installation of Express is a very simple process: it only requires running two installers (and upgrades only require one installer). PQView Express is recommended for small organizations, or for customers who wish to try out PQView in a simplified form. PQView Express does not use Microsoft IIS. The maximum number of monitors that can be integrated with PQView Express is 50.

PQView 4 Standard
PQView Standard is the next step up from Express. Standard includes all the features of Express, plus it supports distributed installations and uses Microsoft IIS. PQView Standard is recommended for system sizes larger than 50 monitors and/or organizations with infrastructures that require distributed installations.

PQView 4 Professional
PQView Professional includes all of the features of the Standard version and adds support for Windows Authentication, additional database support (MS Access and SQL Azure), and includes additional advanced analysis options unavailable in the Standard version.


FEMA | Power Outage Information Sheet

Image: Federal Emergency Management Agency (FEMA)
Image: Federal Emergency Management Agency (FEMA)

PQSynergy™ International Conference and Exhibition

PQSynergy™ is an international forum to share experiences, requirements, questions, information, customer requirements, problems and solutions in the fast growth area of Quality of Supply (QOS) requirements of sensitive loads, Energy Conservation and Management and Power Quality Monitoring and Solutions. The conference is held normally in Thailand but occasionally is relocated around Asia.

Power Quality (Thailand) Co., Ltd. 

We offer a wide range of power quality products and services, including electrical system power analysis, testing, monitoring, trouble analysis, fault diagnostics, ground current testing, leakage current testing, power quality sensitive testing, design advice for power quality and power quality training for end user and utility customer engineers.


Join Our Community on Reddit

A subreddit dedicated to ask questions, discuss topics, share knowledge, and problem-solving related to Power Quality.