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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

General Requirements for a Smart Grid Architecture – Remarks on Standards for Implementation

Published by Anna PAMUŁA, University of Lodz Abstract. The paper presents importance of standardization and potential standards relevant for Smart Grid implementation mainly focused on ICT standards. Short overview of current work performed by different bodies round the world is presented. The paper presents some recommendation based on the SEESGEN-ICT EU project and reports preparedContinue reading “General Requirements for a Smart Grid Architecture – Remarks on Standards for Implementation”

Lightning Transient Overvoltage Evaluation

Published by Electrotek Concepts, Inc., PQSoft Case Study: Lightning Transient Overvoltage Evaluation, Document ID: PQS1205, Date: January 26, 2012. Abstract: This case study presents a wind plant substation lightning transient overvoltage evaluation. A high-frequency transient model was created to simulate the lightning transients and resulting overvoltages and arrester energy duties. A high-frequency model was required toContinue reading “Lightning Transient Overvoltage Evaluation”

The Trouble With Capacitors Part 2

Published by R. Fehr, P.E., Engineering Consultant, Jan 1, 2004 Here’s how to reduce the effect of capacitor switching on your power system Last month’s article discussed exactly what happens when electric utilities switch shunt capacitors: power system components are exposed to transient voltages and currents produced by energizing and de-energizing these devices. Those transientsContinue reading “The Trouble With Capacitors Part 2”

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.