Estimating the parameters of a Thévenin equivalent system based on output voltage and current measurements: computational challenges and simulated studies
Sanchez Amay, Christian
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https://hdl.handle.net/2142/34557
Description
Title
Estimating the parameters of a Thévenin equivalent system based on output voltage and current measurements: computational challenges and simulated studies
Author(s)
Sanchez Amay, Christian
Issue Date
2012-09-18T21:25:29Z
Director of Research (if dissertation) or Advisor (if thesis)
Sauer, Peter W.
Department of Study
Electrical & Computer Eng
Discipline
Electrical & Computer Engr
Degree Granting Institution
University of Illinois at Urbana-Champaign
Degree Name
M.S.
Degree Level
Thesis
Keyword(s)
Thévinen equivalent parameters
ill-conditioned system
computational challenges.
Abstract
This thesis presents a study of the computational challenges when estimating the Thévenin equivalent parameters at a large-scale power system network based on local measurements. The estimation will use a common mathematical method for an overdetermined system. The motivation is taken from phasor measurement unit (PMU) measurements at specific nodes across a transmission line for monitoring purposes. The ac equivalent system is simplified to a small dc circuit to study the possibility of encountering an ill-conditioned measurement set. Finally a second estimation technique, based on noisy measurements, is presented and compared against the first.
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