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Control strategies for reactive shunts to improve long-term voltage stability

Safari Tirtashi, Mohammad Reza LU ; Samuelsson, Olof LU and Svensson, Jörgen LU (2013) 48th International Universities Power Engineering Conference (UPEC 2013) In Power Engineering Conference (UPEC), 2013 48th International Universities
Abstract
Voltage collapse was one of the main causes for many recent blackouts. The direct link between voltage stability and reactive power balance in the system leads to more attention toward reactive power resources in the power systems. Shunt reactors and capacitors are used to balance reactive power in the power systems. The strategy to control them in both normal and emergency conditions is an important issue. This paper deals with two different strategies for automatic switching of shunt reactors and capacitors in the power systems. The first control strategy, called the local scheme, switches the shunt when the voltage at the local bus is outside the tolerance band. In the second control strategy, called neighboring scheme, local voltage as... (More)
Voltage collapse was one of the main causes for many recent blackouts. The direct link between voltage stability and reactive power balance in the system leads to more attention toward reactive power resources in the power systems. Shunt reactors and capacitors are used to balance reactive power in the power systems. The strategy to control them in both normal and emergency conditions is an important issue. This paper deals with two different strategies for automatic switching of shunt reactors and capacitors in the power systems. The first control strategy, called the local scheme, switches the shunt when the voltage at the local bus is outside the tolerance band. In the second control strategy, called neighboring scheme, local voltage as well as voltage at neighboring buses are used. Dynamic simulations of the NORDIC 32 test system show that the neighboring scheme improves voltage compared to the local one. In the simulated scenario a blackout is avoided by using the neighboring scheme. This is explained using PV curves for a new test system reflecting the key behavior of NORDIC 32. (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
power capacitors power system dynamic stability NORDIC 32 test system automatic switching capacitors control strategies long-term voltage stability neighboring scheme reactive power balance reactive shunts shunt reactors voltage collapse
in
Power Engineering Conference (UPEC), 2013 48th International Universities
pages
5 pages
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
48th International Universities Power Engineering Conference (UPEC 2013)
external identifiers
  • wos:000333750100176
  • scopus:84894168454
DOI
10.1109/UPEC.2013.6715028
language
English
LU publication?
yes
id
e7819778-92b0-4cf8-891b-c40b6233df64 (old id 4388336)
alternative location
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6715028&isnumber=6714851
date added to LUP
2014-04-02 13:12:03
date last changed
2017-03-19 04:23:26
@inproceedings{e7819778-92b0-4cf8-891b-c40b6233df64,
  abstract     = {Voltage collapse was one of the main causes for many recent blackouts. The direct link between voltage stability and reactive power balance in the system leads to more attention toward reactive power resources in the power systems. Shunt reactors and capacitors are used to balance reactive power in the power systems. The strategy to control them in both normal and emergency conditions is an important issue. This paper deals with two different strategies for automatic switching of shunt reactors and capacitors in the power systems. The first control strategy, called the local scheme, switches the shunt when the voltage at the local bus is outside the tolerance band. In the second control strategy, called neighboring scheme, local voltage as well as voltage at neighboring buses are used. Dynamic simulations of the NORDIC 32 test system show that the neighboring scheme improves voltage compared to the local one. In the simulated scenario a blackout is avoided by using the neighboring scheme. This is explained using PV curves for a new test system reflecting the key behavior of NORDIC 32.},
  author       = {Safari Tirtashi, Mohammad Reza and Samuelsson, Olof and Svensson, Jörgen},
  booktitle    = {Power Engineering Conference (UPEC), 2013 48th International Universities},
  keyword      = {power capacitors power system dynamic stability NORDIC 32 test system automatic switching capacitors control strategies long-term voltage stability neighboring scheme reactive power balance reactive shunts shunt reactors voltage collapse},
  language     = {eng},
  pages        = {5},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  title        = {Control strategies for reactive shunts to improve long-term voltage stability},
  url          = {http://dx.doi.org/10.1109/UPEC.2013.6715028},
  year         = {2013},
}