Revised IEC and IEEE Standards for PQ Measurements for Users of PQ Monitoring Equipment

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”

Application Guide for Solving Harmonic Problems

Published by MYRON ZUCKER INC. , Website: 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”

Harmonic Current and Voltage Distortion

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”

PQ Symptoms in the Medical Industry

Published by Terry Chandler, Director of Engineering, Power Quality Thailand LTD/Power Quality Inc., USA. Emails:,

Standard EN 50160 – Voltage Characteristics of Public Distribution Systems

Published by Henryk Markiewicz, Email:, & Antoni Klajn, Email:, Wroclaw University of Technology, July 2004. Website: Source: Leonardo Power Quality Initiative (LPQI) Power Quality Application Guide Voltage Disturbances 5.4.2 Standard EN 50160 Introduction Electrical energy is a product and, like any other product, should satisfy the proper quality requirements. If electrical equipmentContinue reading “Standard EN 50160 – Voltage Characteristics of Public Distribution Systems”

Harmonics Mitigation and Power Quality Improvement in Grid Connected Wind Power Plant Using STATCOM

Published by Nasiru B. Kadandani, Department of Electrical Engineering, Bayero University, Kano, Nigeria. Email: Published in: The Proceedings of Second International Conference on Electrical and Electronics Engineering, Clean Energy and Green Computing, Konya, Turkey, 2015. Abstract Grid integration of intermittent renewable energy sources like wind and solar is usually associated with power quality disturbanceContinue reading “Harmonics Mitigation and Power Quality Improvement in Grid Connected Wind Power Plant Using STATCOM”

PQ Analysis: How Power Quality is Measured

Published by testguy, November 23, 2019. Website: How Power Quality is Measured? Several types of instruments are available for power quality measurement, each serving their own unique purpose. Power quality analyzers are the most commonly used tools to observe real-time readings and also collect data at high speeds for downloading to computers for analysis, opposed to a powerContinue reading “PQ Analysis: How Power Quality is Measured”

PQ Analysis: Power Factor, Unbalance and Harmonics

Published by testguy, November 23, 2019. Website: Power Factor, Unbalance and Harmonics Electrical loads are often composed of more than just pure resistance, the combination of resistance and reactance in an AC system is called the impedance. Reactance comes in two forms: inductive and capacitive, both of which do not contribute to “useful” work on theContinue reading “PQ Analysis: Power Factor, Unbalance and Harmonics”


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