This Week's Tech Talk, Harmonic Analysis - Knowing the Basics Is Essential

Harmonic analysis tools such as ETAP, EasyPower, CYME, SKM, and PSCAD are indispensable tools that aid engineers with the evaluation and mitigation of the negative impact of non-linear loads on industrial and utility power systems. However, when these tools are presented with bad input data or the program output is interpreted improperly, they lead to incorrect system design.

Starting at Ohms Law and the creation of equivalent circuits, this tech talk demystifies the topic of harmonics, harmonic resonance, and harmonic filtering. It provides the foundational knowledge that is necessary to effectively perform harmonic analysis, to do “back-of-the-envelope calculations,” interpret harmonic reports, and evaluate mitigation strategies.

After completion of the next two tech talks, attendees will understand how harmonic studies are conducted, what harmonics are, where they come from, what harmonic resonance is, its impact on the power system, harmonic filtering, harmonic current amplification, and much more. Attendees acquire the necessary knowhow to verify and evaluate vendor recommendations, harmonic analysis reports, and filter designs. The presenter encourages discussion and questions on such topics as input data, extent of modelling, impedance data, harmonic load modeling, modeling of stray capacitance, 519 compliance, harmonic measurement procedures, interharmonics, and non-characteristic harmonics, data validation, model validation, filter design, resonance, and interpretation of program outputs.

If you are involved with the application of non-linear loads (rectifiers, LCI drives, ASD/VFD drives, active-front-end drives, high-pulse drives, “IEEE 519 Compliant,” Cycloconverters), harmonic filters, or power factor correction, consider viewing this informative tech talk presented by a leading industry expert.

Part 1 of 2 of the presentatin was recored live on Thursday, August 27, 2020, at 2PM here. Part 2 of 2 will be presented live at 2PM Eastern Time, September 3, 2020 here: If you want a meeting invite for for this and future Tech Talks click https://nepsi.com/techtalks. All tech talks are recorded and can be viewed from our YouTube Playlist here.

NEPSI believes a well informed customer is their best customer.