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Load Modulation for Damping of Electro-Mechanical Oscillations

Samuelsson, Olof LU (2001) IEEE Power Engineering Society Winter Meeting, 2001 In [Host publication title missing]
Abstract
Today it is feasible for utilities to control selected customer loads in a nondisturbing fashion. This is comparable to load shedding, but has a wider area of application. This paper focuses on direct load control or modulation for power system damping and is based on a field test of on-off control and modal analysis of differential-algebraic equation models of three test systems. Real power load controlled by bus frequency is found to be robust to changes in network topology. It is shown that on-off modulation is more effective than sinusoidal modulation for damping of large oscillations, but not for small oscillations. It proves difficult to give a general measure of the required amount of controlled load, since modulation of real power... (More)
Today it is feasible for utilities to control selected customer loads in a nondisturbing fashion. This is comparable to load shedding, but has a wider area of application. This paper focuses on direct load control or modulation for power system damping and is based on a field test of on-off control and modal analysis of differential-algebraic equation models of three test systems. Real power load controlled by bus frequency is found to be robust to changes in network topology. It is shown that on-off modulation is more effective than sinusoidal modulation for damping of large oscillations, but not for small oscillations. It proves difficult to give a general measure of the required amount of controlled load, since modulation of real power loads has an additive rather than multiplicative effect on power flows. Different structures of load control systems are listed. If the system is centralized, it is suggested that the distribution company owns and operates the system and that damping is sold as ancillary service (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
Damping Differential equations Frequency Load flow control Modal analysis Power system analysis computing Power system control Power system modeling Power systems System testing
in
[Host publication title missing]
editor
Samuelsson, Olof and
conference name
IEEE Power Engineering Society Winter Meeting, 2001
external identifiers
  • scopus:0037971709
ISBN
0-7803-6672-7
DOI
10.1109/PESW.2001.917042
language
English
LU publication?
yes
id
0b15a493-1830-4ab6-ab30-d9b725c876ac (old id 4333171)
date added to LUP
2014-11-26 16:20:50
date last changed
2017-03-19 04:29:28
@inproceedings{0b15a493-1830-4ab6-ab30-d9b725c876ac,
  abstract     = {Today it is feasible for utilities to control selected customer loads in a nondisturbing fashion. This is comparable to load shedding, but has a wider area of application. This paper focuses on direct load control or modulation for power system damping and is based on a field test of on-off control and modal analysis of differential-algebraic equation models of three test systems. Real power load controlled by bus frequency is found to be robust to changes in network topology. It is shown that on-off modulation is more effective than sinusoidal modulation for damping of large oscillations, but not for small oscillations. It proves difficult to give a general measure of the required amount of controlled load, since modulation of real power loads has an additive rather than multiplicative effect on power flows. Different structures of load control systems are listed. If the system is centralized, it is suggested that the distribution company owns and operates the system and that damping is sold as ancillary service},
  author       = {Samuelsson, Olof},
  booktitle    = {[Host publication title missing]},
  editor       = {Samuelsson, Olof},
  isbn         = {0-7803-6672-7},
  keyword      = {Damping Differential equations Frequency Load flow control Modal analysis Power system analysis computing Power system control Power system modeling Power systems System testing},
  language     = {eng},
  title        = {Load Modulation for Damping of Electro-Mechanical Oscillations},
  url          = {http://dx.doi.org/10.1109/PESW.2001.917042},
  year         = {2001},
}