Energy Training

Harmonics Investigation

5 Days Course


Harmonics in Power Systems

  • a. Review of Power Systems Harmonics Sources
    • i. Harmonics Causes: Non Linear Loads
    • ii. Harmonics Voltage Have Forms and Spectrum;
    • iii. Harmonics Current Have Forms and Spectrum;
    • iv. Effects of Voltage and Current Distortion:
      • 1. Effects on Power Transformer;
      • 2. Effects on Generators and Motors;
      • 3. Capacitors;
      • 4. Protective Equipment;
      • 5. Measuring Equipment
  • a. Power Quality Standards
  • b. Harmonics Investigation:
    • a. Site Measurement and Data Collection;
    • b. Selection of Appropriate Tools;
    • c. Harmonics Indicators;
  • c. VFDs and Harmonics

Site Data Collection:

  • Available Short Circuit Contribution;
  • PCC – Point of Common Coupling;
  • Electrical Loads and Motors;
  • Capacitor Banks;
  • IEEE or IEC Standards;

Harmonics Analysis

  • Bus Voltage Waveforms, Spectrum and Voltage Total Harmonics Distortion;
  • Branch Current Waveforms, Spectrum and Current Total Harmonics Distortion;
  • Voltage Harmonics Indices;
  • Current Harmonics Indices;
  • THD Violations

Numerical Examples using

  • SKM Professional Software;
  • DesignBase Professional Software;
    • Generate the model one line diagram;
    • Input Data: Power Utility, Power Transformer, Feeders/Cables, Induction Motors
    • IEEE Standards;
    • IEC Standards;
    • Harmonics Filter Design:
    • Site Filter Locations;
    • Data Collection;
    • Filter Design.
    • Harmonics Mitigation

Program Schedule:
  • 8:00 – 12:00 pm Morning Session
  • 12:00 – 13:00 pm Lunch
  • 13:30 – 17:00 pm Course Session


After each 50 minutes, break 10 minutes.

In-House Training

We provide cost effective in-house courses, tailored specifically to your organization’s needs. The courses can be arranged at your preferred location and time. If you would like to discuss further details, please contact Spacetime.

About the Author

Professor Silviu Darie, PhD(EE) has more than 40 years’ experience of university level electrical engineering instruction, industry consultancy and training in power system analysis computer application. Large international experience: Romania, South Africa, New Zealand, Saudi Arabia and USA in electrical energy distribution, electrical energy management, demand side management, power quality, transmission pricing, embedded generation as well as computer aided power system analysis and design. From 2005 to 2015 was the Vice President of Consulting and Engineering at Power Analytics Corporation, USA in San Diego. He is a Consultant Professor of Power Systems at Technical University of Cluj Napoca, Romania and University of Cape Town. Dr. Darie has authored or co-authored hundreds of technical books, student manuals, technical papers and research projects. His research area covers the modeling of power system components, power system harmonics, computer aided power system design and analysis, power system distribution optimization, power system protection, industrial installation, project investigation and electro technologies.

Dr. Darie led nearly 210 electrical power projects; he constructed 18 prototypes designed for mass production, holds three patents and is experienced in most leading professional software programs for electrical engineering. He has provided services to clients worldwide.