Online Tracking of Two Dominant Inter-Area Modes of Oscillation in the Eastern Interconnection

Date
2023-01-03
Authors
Follum, Jim
Nayak, Neeraj
Eto, Joseph
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2622
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Abstract
Reliable power system operation requires that small-signal stability be maintained at all times. Mode meters are measurement-based tools that provide operators with situational awareness of the system's stability margin. They operate by continually tracking the inter-area modes of oscillation that govern small-signal stability. This paper reports on the deployment of mode meters for online monitoring of two dominant modes of oscillation in the United States' Eastern Interconnection (EI). The use of measurements from system operators across the interconnection to provide continuous tracking is novel in the EI. Results from over four months of analysis reveal diurnal patterns in the modes and demonstrate that they can be tracked through a variety of system conditions. The results from this study continue to build an understanding of the EI's modes that will inform future modeling and monitoring efforts.
Description
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Monitoring, Control, and Protection, inter-area mode of oscillation, mode meter, phasor measurement unit, small-signal stability
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9
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Proceedings of the 56th Hawaii International Conference on System Sciences
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Attribution-NonCommercial-NoDerivatives 4.0 International
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