TY - GEN
T1 - Robust transformer tap estimation
AU - Lin, Yuzhang
AU - Abur, Ali
N1 - Publisher Copyright:
© 2017 IEEE.
PY - 2017/7/13
Y1 - 2017/7/13
N2 - The methods currently used for transformer tap estimation are not robust against measurement errors, while the well-documented Least Absolute Value (LAV) State Estimator (SE) is not robust against transformer tap errors. This paper addresses these shortcomings by introducing the so-called Sparse Extended Least Absolute Value (SELAV) SE. By strategically modifying the formulation of LAV SE, the "sparse" nature of l1 optimization is exploited for the tap estimation problem. The transformer tap positions can be reliably estimated, while the simultaneously produced state estimates (bus voltage angles and magnitudes) remain robust against tap errors. Case studies done using IEEE 57-bus test system are provided to illustrate the effectiveness of the proposed approach.
AB - The methods currently used for transformer tap estimation are not robust against measurement errors, while the well-documented Least Absolute Value (LAV) State Estimator (SE) is not robust against transformer tap errors. This paper addresses these shortcomings by introducing the so-called Sparse Extended Least Absolute Value (SELAV) SE. By strategically modifying the formulation of LAV SE, the "sparse" nature of l1 optimization is exploited for the tap estimation problem. The transformer tap positions can be reliably estimated, while the simultaneously produced state estimates (bus voltage angles and magnitudes) remain robust against tap errors. Case studies done using IEEE 57-bus test system are provided to illustrate the effectiveness of the proposed approach.
KW - Least absolute value
KW - state estimation
KW - transformer tap estimation
UR - http://www.scopus.com/inward/record.url?scp=85034746298&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85034746298&partnerID=8YFLogxK
U2 - 10.1109/PTC.2017.7980919
DO - 10.1109/PTC.2017.7980919
M3 - Conference contribution
AN - SCOPUS:85034746298
T3 - 2017 IEEE Manchester PowerTech, Powertech 2017
BT - 2017 IEEE Manchester PowerTech, Powertech 2017
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2017 IEEE Manchester PowerTech, Powertech 2017
Y2 - 18 June 2017 through 22 June 2017
ER -