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North American SynchroPhasor Initiative (NASPI) Technical Report - Model Validation Using Synchrophasors

This technical report was developed in October, 2013 by members of the North American SynchroPhasor Initiative, a collaboration between the North American electric industry (utilities, grid operators, vendors and consultants), the North American Electric Reliability Corporation, academics, and the U.S. Department of Energy, to advance and accelerate the development and use of synchrophasor technology for grid reliability and efficiency. The material was produced for a model validation workshop, one of a series of NASPI technical workshops intended to educate and document the stakeholder community on the state of the art for key synchrophasor technology issues.

Model validation is an early success in the use of synchrophasor data to improve power system reliability. The power system is designed and operated based on mathematical models describing the expected behavior of power plants, grid elements, and the grid as a whole. However, if a generator doesn’t act in the way its model predicts, erroneous assumptions about how grid assets will behave can lead to severe disturbances and costly equipment damage. Inaccurate models have contributed to a number of recent North American power outages.

Phasor measurement units (PMUs) collect high-speed, time-synchronized data about grid conditions. Data collected about a power plant’s behavior during a grid disturbance can be used to improve the model of that generator. This workshop featured technical experts explaining the value of PMU data-based model valuation and presenting several examples of the model validation process and results for a variety of power plants. The workshop closed with discussion of the distinction between generator models and power system models.

The report includes a summary of the model validation workshop, the workshop agenda, and all of the presentations made at the workshop.

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