Title of article
Measurements and parameters estimation in power systems containing UPFC
Author/Authors
Ahmadi Jirdehi, Mehdi Department of Electrical Engineering - Kermanshah University of Technology, Kermanshah, Iran , Hemmati, Reza Department of Electrical Engineering - Kermanshah University of Technology, Kermanshah, Iran , Galvani, Sadjad Department of Electrical and Computer Engineering - Urmia University, Urmia, Iran
Pages
11
From page
1
To page
11
Abstract
This paper presents a new algorithm for validation (identification and
correction) of measurement and parameter errors (branch parameters as
well as unified power flow controller (UPFC) parameters), simultaneously.
The algorithm is composed of three steps. First, in the step 1, state estimation
(SE) is solved by the modified weighted least square (MWLS) and then, the
normalized measurement residual and Lagrange multiplier vectors are
computed. The errors in measurement and parameter are identified in the
step 2. Finally, in the step 3, erroneous measurement and parameter values
are corrected. The correction algorithm is based on a proposed approach
without the using of augmented state vector (ASV). The IEEE-14 bus system
and 230 kV East Azerbaijan network of Iran modified by incorporating UPFC
are used as test systems. Simulation results demonstrate the effectiveness of
the proposed method. Also, results indicate that the proposed method can
validate the erroneous values with lower error percentage.
Keywords
State Estimation , MWLS , UPFC , Measurement Errors , Parameter Errors , East Azerbaijan Network of Iran
Journal title
Energy Equipment and Systems
Serial Year
2022
Record number
2730296
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