While oscillations in power systems have always been of concern, the increasing use of inverter-based resources (IBRs) has led to oscillations with a wider range of characteristics and root causes. These raise new issues and risks for power system operation and planning, as oscillations can lead to unwanted equipment disconnections, supply interruptions, equipment damage, and other violations of reliability criteria. This practical guide is a starting point for people who encounter oscillatory behavior, a sort of field guide or diagnostician’s assistant.
Even as the industry has a growing wealth of knowledge about every facet of systems with increasing shares of IBRs, concise guidance on the practical aspects of dealing with power system oscillations is scarce. At the same time, there is a great deal of practical knowledge among industry experts immersed in the minutiae of power system dynamics that can greatly benefit the engineering staff charged with identifying the causality of oscillations, but this practical knowledge is currently under-documented. This guide aims to change that, drawing extensively from both the vast literature and the knowledge and experience of the diverse group of industry experts in the Energy Systems Integration Group Stability Task Force.
The guide begins with the technical background necessary as a foundation for forensics. Then it presents an overall diagnostic process including a high-level flow chart and supporting sections on measurements and analytical tools. A causality screening matrix distills the correlation between observed behaviors and possible causes into an extremely compact diagnostic aid. The diagnostician will emerge from the initial diagnostic assessment with a candidate causality, and then proceeds to more detailed diagnosis. The balance of the guide provides detailed guidance for assessment and countermeasures for specific oscillatory phenomena.
Printing a hard copy of the guide
If you wish to print this guide using a local print shop, click here to download a file specially formatted for that purpose to provide to them.
If you would like to order a professionally printed copy with a cover and a spiral binding, we have arranged for this with PrintPPS.com. They have a two-copy minimum, for $42 per copy (plus shipping). To order two or more copies, contact Jereme (“Jeremy”) Metzger at jsm@printpps.com or (800) 921-1322 and reference Order #575226. He will handle your payment and shipping information. If you have any questions, please send an email to info@esig.energy.
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