HARMONICS: FROM DRIVES TO THE GRID – A PRACTICAL GUIDE TO SOURCES, STUDIES, STANDARDS, AND MITIGATION
The officers of the Oregon/SW Washington Chapter of the Industry Applications Society invite you to join us Thursday evening, November October 19, 2026, for our dinner, meeting, and technical presentation. We appreciate the support of all who attend our dinners and presentations. This month, in an effort to engage with engineering students at Portland State University, we will be meeting at the City of Portland Building at 1900 SW 4th Ave, Portland, OR in the PSU ECE conference room on campus. PSU faculty will arrange for IEEE students to be in the lobby of the City Building to provide access and show attendees to the ECE conference room. Recommended parking at either the University Place lot or Parking Structure 1 (a few blocks from the building). Details on parking cost and exact location of the lots and structures can be found at https://www.pdx.edu/transportation/hourly-visitor-parking.
The cost for dinner is $20 with food from QDOBA Eats. There is no charge to attend the presentation only. Our IAS Chapter always offers free dinners for local PSU, OSU, George Fox, U of P, OIT and WSUV Electrical Engineering Students who attend our meetings. This is an excellent networking opportunity for students as our meetings are attended by many professionals in consulting, industrial engineering, and electrical equipment manufacturing.
Date and Time
Location
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- City of Portland Building
- 1900 SW 4th Ave
- Portland, Oregon
- United States 97201
- Room Number: PSU ECE conference room
- Starts 09 November 2026 02:30 PM UTC
- Ends 19 November 2026 01:00 AM UTC
- Admission fee ?
- Menu: Dinner and Presentation, Dinner and Presentation - No Charge Student, Presentation Only - No Charge
Speakers
HARMONICS: FROM DRIVES TO THE GRID – A PRACTICAL GUIDE TO SOURCES, STUDIES, STANDARDS, AND MITIGATION
Abstract: Harmonics are one of the most common power-quality challenges in industrial and commercial power systems, yet many harmonic problems arise not from the source alone, but from the interaction between harmonic current sources and the electrical network. Using practical examples from drives, transformers, capacitor banks, and inverter-based resources, this presentation develops a visual understanding of how distorted waveforms are formed, how harmonics propagate through a system, and why resonance can amplify otherwise acceptable distortion levels.
The presentation then follows the workflow of a practical harmonic study, from defining objectives and collecting system data through frequency-scan analysis, harmonic simulation, validation, and mitigation. Using IEEE 519 as the familiar foundation for industrial systems, the discussion shows how the same harmonic principles extend to distribution-connected DER under IEEE 1547 and transmission-connected inverter-based resources under IEEE 2800. The goal of practical mitigation is not simply to reduce distortion, but to understand how harmonic sources, and applicable standards combine to produce a reliable and compliant power system.
Presenter: Tao Yang, Principal Engineer, Power Systems Engineering, Bentley Systems, Incorporated, Tualatin, Oregon
Agenda
Date / Time: Thursday, November 19, 2026
5:30PM - Meet & greet social hour
6:15PM - Dinner begins
7:00PM - Presentation begins
7:45PM – Questions/Answers
8:00PM – Meeting adjourns