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Title: A New Model of Frequency Delay in Power Systems

Abstract

Observations of slow frequency signals in power systems have been explained by continuum wave equations that approximate the system's electromechanical dynamics. These continuum models predict that the signal speed is a function of the rotational inertia of the generators and impedances of the transmission lines. Here, we show that frequency signals with speeds modulated by these factors are predicted by the swing and Kirchhoff equations, without resorting to a continuum model. Our analysis also shows that the precision of the sensors used to measure frequency has a significant impact on the apparent speed of the frequency signal.

Authors:
;
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1060833
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Journal Article
Journal Name:
IEEE Transactions on Circuits and Systems. II, Express Briefs
Additional Journal Information:
Journal Volume: 59; Journal Issue: 11; Journal ID: ISSN 1549-7747
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
24 POWER TRANSMISSION AND DISTRIBUTION

Citation Formats

Nutaro, James, and Protopopescu, Vladimir. A New Model of Frequency Delay in Power Systems. United States: N. p., 2012. Web. doi:10.1109/TCSII.2012.2220677.
Nutaro, James, & Protopopescu, Vladimir. A New Model of Frequency Delay in Power Systems. United States. doi:10.1109/TCSII.2012.2220677.
Nutaro, James, and Protopopescu, Vladimir. Thu . "A New Model of Frequency Delay in Power Systems". United States. doi:10.1109/TCSII.2012.2220677.
@article{osti_1060833,
title = {A New Model of Frequency Delay in Power Systems},
author = {Nutaro, James and Protopopescu, Vladimir},
abstractNote = {Observations of slow frequency signals in power systems have been explained by continuum wave equations that approximate the system's electromechanical dynamics. These continuum models predict that the signal speed is a function of the rotational inertia of the generators and impedances of the transmission lines. Here, we show that frequency signals with speeds modulated by these factors are predicted by the swing and Kirchhoff equations, without resorting to a continuum model. Our analysis also shows that the precision of the sensors used to measure frequency has a significant impact on the apparent speed of the frequency signal.},
doi = {10.1109/TCSII.2012.2220677},
journal = {IEEE Transactions on Circuits and Systems. II, Express Briefs},
issn = {1549-7747},
number = 11,
volume = 59,
place = {United States},
year = {2012},
month = {11}
}