Off-line analysis of the load response during large voltage variations
(2004) 2004 IEEE/PES Transmission 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:
https://lup.lub.lu.se/record/614537
- author
- Navarro, I ; Lindahl, Sture LU and Samuelsson, Olof LU
- organization
- publishing date
- 2004
- 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
- host publication
- 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
- conference location
- Sao Paulo, Brazil
- conference dates
- 2004-11-08 - 2004-11-11
- 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
- 2016-04-04 11:32:41
- date last changed
- 2022-01-29 22:03:59
@inproceedings{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}}, booktitle = {{2004 IEEE/PES Transmision and Distribution Conference and Exposition: Latin America}}, isbn = {{0-7803-8775-9}}, 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}}, language = {{eng}}, pages = {{230--235}}, publisher = {{IEEE - Institute of Electrical and Electronics Engineers Inc.}}, title = {{Off-line analysis of the load response during large voltage variations}}, url = {{http://ieeexplore.ieee.org/xpls/abs_all.jsp?arnumber=1432383}}, year = {{2004}}, }