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Off-line analysis of the load response during large voltage variations

Navarro, I; Lindahl, Sture LU and Samuelsson, Olof LU (2004) 2004 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America In 2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America p.230-235
Abstract
The load response during and after a severe fault is critical for transient stability. This risk increases with the presence of induction motors in the load area. This paper provides analysis of the load voltage characteristic under large voltage variations. Field measurements from a noneffectively earthed system, from phase-to-phase faults at the 50 kV-level in Sweden, have been used. The time-varying load parameters, resistance R(t) and reactance X(t), have been determined from measurements of phase-voltages and currents. Estimates of the active, reactive and apparent power have been calculated. The results show that commonly used models are inaccurate during large voltage variations. The load uncertainty critically increases with the... (More)
The load response during and after a severe fault is critical for transient stability. This risk increases with the presence of induction motors in the load area. This paper provides analysis of the load voltage characteristic under large voltage variations. Field measurements from a noneffectively earthed system, from phase-to-phase faults at the 50 kV-level in Sweden, have been used. The time-varying load parameters, resistance R(t) and reactance X(t), have been determined from measurements of phase-voltages and currents. Estimates of the active, reactive and apparent power have been calculated. The results show that commonly used models are inaccurate during large voltage variations. The load uncertainty critically increases with the size of the voltage changes since its nonlinear behavior accentuates for more system stressing conditions. This fact is more noticeable for the reactive load characteristic (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
apparent power, reactive power, active power, currents measurements, phase-voltages measurements, reactance, resistance, time-varying load parameters, Sweden, phase-to-phase faults, noneffectively earthed system, field measurements, load voltage characteristic, off-line analysis, induction motors, power system dynamic stability, power system transient stability, load modeling, 50 kV, load uncertainty
in
2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America
pages
230 - 235
publisher
IEEE--Institute of Electrical and Electronics Engineers Inc.
conference name
2004 IEEE/PES Transmission and Distribution Conference and Exposition: Latin America
external identifiers
  • WOS:000228358400042
  • Scopus:22744434228
ISBN
0-7803-8775-9
language
English
LU publication?
yes
id
7b6db172-2ca4-4e9c-a3dd-6dce70dda943 (old id 614537)
alternative location
http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1432383
date added to LUP
2007-11-29 14:05:07
date last changed
2016-10-13 04:46:19
@misc{7b6db172-2ca4-4e9c-a3dd-6dce70dda943,
  abstract     = {The load response during and after a severe fault is critical for transient stability. This risk increases with the presence of induction motors in the load area. This paper provides analysis of the load voltage characteristic under large voltage variations. Field measurements from a noneffectively earthed system, from phase-to-phase faults at the 50 kV-level in Sweden, have been used. The time-varying load parameters, resistance R(t) and reactance X(t), have been determined from measurements of phase-voltages and currents. Estimates of the active, reactive and apparent power have been calculated. The results show that commonly used models are inaccurate during large voltage variations. The load uncertainty critically increases with the size of the voltage changes since its nonlinear behavior accentuates for more system stressing conditions. This fact is more noticeable for the reactive load characteristic},
  author       = {Navarro, I and Lindahl, Sture and Samuelsson, Olof},
  isbn         = {0-7803-8775-9},
  keyword      = {apparent power,reactive power,active power,currents measurements,phase-voltages measurements,reactance,resistance,time-varying load parameters,Sweden,phase-to-phase faults,noneffectively earthed system,field measurements,load voltage characteristic,off-line analysis,induction motors,power system dynamic stability,power system transient stability,load modeling,50 kV,load uncertainty},
  language     = {eng},
  pages        = {230--235},
  publisher    = {ARRAY(0x7b65010)},
  series       = {2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America},
  title        = {Off-line analysis of the load response during large voltage variations},
  year         = {2004},
}