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Estimation of the Zero Sequence Voltage on the D-side of a Dy Transformer by Using One Voltage Transformer on the D-side

Sulla, Francesco LU and Samuelsson, Olof LU (2008) 9th International Conference on Developments in Power System Protection (DPSP2008) In The Institution of Engineering and Technology 9th international conference on developments in power systems protection : DPSP 2008, 17-20 March 2008. p.517-522
Abstract
The usual practice to measure the zero sequence voltage on the D-side of a transformer is to use three voltage transformers (VT), each of them connected between each phase and earth on the primary side and broken-delta connected on the secondary side. In this paper a method is presented for the estimation of the zero sequence voltage on the D-side of a Dy transformer by the use of only one VT connected between one phase and earth on the D-side and three VTs and current transformers (CT) on the y-side. The method is first introduced theoretically. Results from simulations and laboratory tests are then presented. The method proved to be accurate with an observed maximum error around 7% of nominal phase-to-earth voltage during transformer... (More)
The usual practice to measure the zero sequence voltage on the D-side of a transformer is to use three voltage transformers (VT), each of them connected between each phase and earth on the primary side and broken-delta connected on the secondary side. In this paper a method is presented for the estimation of the zero sequence voltage on the D-side of a Dy transformer by the use of only one VT connected between one phase and earth on the D-side and three VTs and current transformers (CT) on the y-side. The method is first introduced theoretically. Results from simulations and laboratory tests are then presented. The method proved to be accurate with an observed maximum error around 7% of nominal phase-to-earth voltage during transformer energization and below 1% in all other cases. (Less)
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author
organization
publishing date
type
Chapter in Book/Report/Conference proceeding
publication status
published
subject
keywords
current transformers nominal phase-to-earth voltage transformer energization voltage transformer zero sequence voltage zero sequence voltage estimation
in
The Institution of Engineering and Technology 9th international conference on developments in power systems protection : DPSP 2008, 17-20 March 2008.
pages
517 - 522
conference name
9th International Conference on Developments in Power System Protection (DPSP2008)
external identifiers
  • Scopus:67449097413
ISBN
978-0-86341-902-7
language
English
LU publication?
yes
id
e1aa4566-c9bd-4338-8b63-6a7894b07447 (old id 4357706)
alternative location
http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=4497039
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=4497039&tag=1
date added to LUP
2014-03-12 16:25:09
date last changed
2016-10-13 05:01:39
@misc{e1aa4566-c9bd-4338-8b63-6a7894b07447,
  abstract     = {The usual practice to measure the zero sequence voltage on the D-side of a transformer is to use three voltage transformers (VT), each of them connected between each phase and earth on the primary side and broken-delta connected on the secondary side. In this paper a method is presented for the estimation of the zero sequence voltage on the D-side of a Dy transformer by the use of only one VT connected between one phase and earth on the D-side and three VTs and current transformers (CT) on the y-side. The method is first introduced theoretically. Results from simulations and laboratory tests are then presented. The method proved to be accurate with an observed maximum error around 7% of nominal phase-to-earth voltage during transformer energization and below 1% in all other cases.},
  author       = {Sulla, Francesco and Samuelsson, Olof},
  isbn         = {978-0-86341-902-7},
  keyword      = {current transformers nominal phase-to-earth voltage transformer energization voltage transformer zero sequence voltage zero sequence voltage estimation},
  language     = {eng},
  pages        = {517--522},
  series       = {The Institution of Engineering and Technology 9th international conference on developments in power systems protection : DPSP 2008, 17-20 March 2008.},
  title        = {Estimation of the Zero Sequence Voltage on the D-side of a Dy Transformer by Using One Voltage Transformer on the D-side},
  year         = {2008},
}