Power Quality and Harmonics

  • 24 available

Course summary

A two-day power quality course that explains the Engineering Recommendations associated with power quality, and demonstrates their application through worked examples and case studies.

This practical course will take you step by step through the Engineering Recommendation G5/5 on harmonics, explaining the background to the recommendation and the relevance of British and International standards to modern power networks.

The course will take you through the theory behind various types of disturbance on power networks, including the concept of electromagnetic compatibility, the causes and effects of harmonics, voltage fluctuations and flicker, and the effects of variable speed drives, UPS and switched mode power supplies.

You will then get the opportunity to test your understanding of G5/5 by working through a number of worked examples. Finally the workshop course will discuss power quality measurements and how the results can be interpreted, as well as the kind of power quality mitigation and conditioning techniques that you can apply.

Course itinerary

Introduction to Power Quality

Power Quality Standards

  • IEC 61000 series
  • BS EN 50160
  • ER G5/5
  • ER P28 Issue 2
  • P29

Harmonics Theory

  • Harmonic distortion
  • Loads that generate harmonics
  • Effects of harmonics

ER G5/5

  • Purpose of G5/5
  • Features of G5/5

Worked Examples

Power Quality Surveys

  • What to measure
  • Where to measure
  • Analysing the data

Harmonic Measurement and Standards

  • Measurement standards
  • VT’s and CT’s
  • Instruments

Solutions to Harmonic Distortion

  • Filters
  • Isolating transformers


  • ER P29
  • Causes of unbalance

Voltage Fluctuations

  • What is flicker?
  • ER P28 Issue 2
  • Evaluation of flicker level

Worked Example

Programme may be subject to amendment

Why attend?

  • Understand the problems and mitigate against the effects of harmonics on rotating machinery, transformers, cables and other assets
  • Avoid overloading and degrading critical assets
  • Gain essential knowledge of Engineering Recommendation G5/5
  • Improve efficiency and prevent the premature failure of key assets
  • Understand the process for connecting non-linear equipment
  • Test your learning on real life worked examples and case studies
  • Develop vital skills in power quality measurement and interpretation that are in short supply
  • Learn new techniques for mitigation and conditioning

The course is very good, good interaction and content. Case studies with wind turbine transformers would be good to include.

Tom, 15-16 November 2022

Most beneficial if you have a reasonable degree of understanding beforehand, allows you to probe and discuss particular elements most relevant to your field of work. Andrew's real world experience and position on working groups etc most valuable. And daft-laddie questions welcomed and dealt with admirably.

Matt, 15-16 March 2022

Very knowledgeable instructor, extensive experience and understanding of content. Was able to respond to & generally address most queries. Slides were sometimes a bit small, made following worked examples difficult but examples were good demonstrations of points.

Kraig, 15-16 March 2022

Difficult to see some flowcharts, would be good to have these as handouts rather than slides. Overall course was well presented and very informative. Andrew is a very knowledgeable presenter and ran the course well.

Lisa, 15-16 March 2022

Knowledgeable speakers with good real life examples. Well run/organised. Comfortable facilities. Maybe include session on analysis of data recorded by PQ meter (example data set).

Callum, 9-10 November 2021

Both presenters delivered the course very well. I will be able to use some of the topics more effectively in my future power surveys as a result of the course. 30 mins for lunch would be better.

Andrew, 9-10 November 2021

A good introduction to the standards applicable to Power Quality and how to apply them in undertaking an assessment.

Matthew, 9-10 November 2021

Course is very well structured and delivered at an appropriate level. However, from my specific point of view (being from BAE Submarines) there were points that felt a bit irrelevant.

Jomy, 9-10 November 2021

Very good course! First time I've filled the notebook and some helpful discussions. More info on mitigation (filtering etc) would be nice.

James, 9-10 November 2021

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