Comparison of different frequency controllers for a VSC-HVDC supplied system
(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:
https://lup.lub.lu.se/record/1286722
- author
- Du, Cuiqing ; Agneholm, Evert and Olsson, Gustaf LU
- organization
- publishing date
- 2008
- 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
- 2016-04-01 12:06:21
- date last changed
- 2022-03-28 20:18:09
@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}},
keywords = {{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}},
doi = {{10.1109/TPWRD.2008.921130}},
volume = {{23}},
year = {{2008}},
}