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Comparison of different frequency controllers for a VSC-HVDC supplied system

Du, Cuiqing; Agneholm, Evert and Olsson, Gustaf LU (2008) In IEEE Transactions on Power Delivery 23(4). p.2224-2232
Abstract
This paper studies three different frequency controllers and their effects on the voltage disturbance ride-through capability of a VSC-HVDC supplied industrial system. The idea of implementing frequency controller is to improve the power quality of industrial plants by slightly decreasing the VSC output voltage frequency since industrial processes are more sensitive to voltage drops than frequency deviations. The first two controllers, frequency controllers I and II, are fixed frequency controllers and the third one, frequency controller III, is a PI frequency controller. In order to compare three different controllers, a system with a simplified VSC-HVDC and different load types is simulated in PSCAD/EMTDC. Simulation results show that... (More)
This paper studies three different frequency controllers and their effects on the voltage disturbance ride-through capability of a VSC-HVDC supplied industrial system. The idea of implementing frequency controller is to improve the power quality of industrial plants by slightly decreasing the VSC output voltage frequency since industrial processes are more sensitive to voltage drops than frequency deviations. The first two controllers, frequency controllers I and II, are fixed frequency controllers and the third one, frequency controller III, is a PI frequency controller. In order to compare three different controllers, a system with a simplified VSC-HVDC and different load types is simulated in PSCAD/EMTDC. Simulation results show that with frequency controller III, the VSC-HVDC supplied industrial plant can avoid a voltage collapse by decreasing frequency during or after disturbances. Furthermore, with an increase of the converter current limit, the possibility of mitigating voltage dips increases. For frequency controllers I and II, the extent of the disturbance ride-through capability depends on the current limit of the VSC-UVDC. A higher current limit results in a higher ride-through capability. The effect of the dc capacitor on improving the system voltage disturbance tolerance is also investigated during and after disturbances when the VSC-HVDC uses frequency controller I. The system voltage disturbance ride-through capability increases with an increase of the dc capacitance or the current limit. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
voltage source converters-high-voltage direct, ride-through capability, voltage disturbance, voltage dips, current limit, frequency controllers, current (VSC-HVDC)
in
IEEE Transactions on Power Delivery
volume
23
issue
4
pages
2224 - 2232
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
external identifiers
  • wos:000259574000064
  • scopus:54049092357
ISSN
1937-4208
DOI
10.1109/TPWRD.2008.921130
language
English
LU publication?
yes
id
961b7803-ceb8-4d7c-99e5-0ac2ac87cd51 (old id 1286722)
date added to LUP
2009-01-29 15:28:08
date last changed
2017-09-24 03:38:30
@article{961b7803-ceb8-4d7c-99e5-0ac2ac87cd51,
  abstract     = {This paper studies three different frequency controllers and their effects on the voltage disturbance ride-through capability of a VSC-HVDC supplied industrial system. The idea of implementing frequency controller is to improve the power quality of industrial plants by slightly decreasing the VSC output voltage frequency since industrial processes are more sensitive to voltage drops than frequency deviations. The first two controllers, frequency controllers I and II, are fixed frequency controllers and the third one, frequency controller III, is a PI frequency controller. In order to compare three different controllers, a system with a simplified VSC-HVDC and different load types is simulated in PSCAD/EMTDC. Simulation results show that with frequency controller III, the VSC-HVDC supplied industrial plant can avoid a voltage collapse by decreasing frequency during or after disturbances. Furthermore, with an increase of the converter current limit, the possibility of mitigating voltage dips increases. For frequency controllers I and II, the extent of the disturbance ride-through capability depends on the current limit of the VSC-UVDC. A higher current limit results in a higher ride-through capability. The effect of the dc capacitor on improving the system voltage disturbance tolerance is also investigated during and after disturbances when the VSC-HVDC uses frequency controller I. The system voltage disturbance ride-through capability increases with an increase of the dc capacitance or the current limit.},
  author       = {Du, Cuiqing and Agneholm, Evert and Olsson, Gustaf},
  issn         = {1937-4208},
  keyword      = {voltage source converters-high-voltage direct,ride-through capability,voltage disturbance,voltage dips,current limit,frequency controllers,current (VSC-HVDC)},
  language     = {eng},
  number       = {4},
  pages        = {2224--2232},
  publisher    = {IEEE--Institute of Electrical and Electronics Engineers Inc.},
  series       = {IEEE Transactions on Power Delivery},
  title        = {Comparison of different frequency controllers for a VSC-HVDC supplied system},
  url          = {http://dx.doi.org/10.1109/TPWRD.2008.921130},
  volume       = {23},
  year         = {2008},
}