IEEE Power & Energy Magazine - May/June 2014 - 44

Improving
Reliability
Through
Better Models
By Philip Overholt, Dmitry Kosterev,
Joseph Eto, Steve Yang, and
Bernard Lesieutre

T

The Office Of elecTriciTy Delivery anD energy reliabiliTy Of The
U.S. Department of energy (DOe), the bonneville Power administration (bPa), and industry
and academic collaborators have leveraged resources to develop a new, cost-effective method for
validating power plant models using synchrophasor data.
Power plant models are key components of power grid models, which are used by the
power industry as planning and operating tools (see figure 1). validating power plant models
therefore improves the overall power grid models. Power grid models are used to simulate
the effects of different events and scenarios on the power grid to assess overall system performance and reliability. for instance, models of the power grid are used to determine the best
course of action to mitigate the reliability impacts of a disturbance in the event that a power
plant suddenly drops off-line or a transmission line opens because of a lightning strike.
Power plant models are established from data obtained from staged testing, in which engineers
run certain tests on generators to determine the values of parameters that mathematically characterize the behavior of the power plant. These values are then used in the creation of a model of the
power plant tested. These models can give an accurate representation of the behavior of power
plants as they interact with the transmission grid. but the values originally used may change

Digital Object Identifier 10.1109/MPE.2014.2301533
Date of publication: 17 April 2014

44

ieee power & energy magazine

1540-7977/14/$31.00©2014IEEE

may/june 2014



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IEEE Power & Energy Magazine - May/June 2014 - Cover3
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