TY - JOUR
T1 - Measurement-based estimation of the power flow jacobian matrix
AU - Chen, Yu Christine
AU - Wang, Jianhui
AU - Dominguez-Garcia, Alejandro D.
AU - Sauer, Peter W.
N1 - Publisher Copyright:
© 2015 IEEE.
PY - 2016/9
Y1 - 2016/9
N2 - In this paper, we propose a measurement-based method to compute the power flow Jacobian matrix, from which we can infer pertinent information about the system topology in near real-time. A salient feature of our approach is that it readily adapts to changes in system operating point and topology; this is desirable as it provides power system operators with a way to update, as the system evolves, the models used in many reliability analysis tools. The method uses high-speed synchronized voltage and current phasor data collected from phasor measurement units to estimate entries of the Jacobian matrix through linear total least-squares (TLS) estimation. In addition to centralized TLS-based algorithms, we provide distributed alternatives aimed at reducing computational burden. Through numerical case studies, we illustrate the effectiveness of our proposed Jacobian-matrix estimation approach as compared with the conventional model-based one.
AB - In this paper, we propose a measurement-based method to compute the power flow Jacobian matrix, from which we can infer pertinent information about the system topology in near real-time. A salient feature of our approach is that it readily adapts to changes in system operating point and topology; this is desirable as it provides power system operators with a way to update, as the system evolves, the models used in many reliability analysis tools. The method uses high-speed synchronized voltage and current phasor data collected from phasor measurement units to estimate entries of the Jacobian matrix through linear total least-squares (TLS) estimation. In addition to centralized TLS-based algorithms, we provide distributed alternatives aimed at reducing computational burden. Through numerical case studies, we illustrate the effectiveness of our proposed Jacobian-matrix estimation approach as compared with the conventional model-based one.
KW - Power flow Jacobian matrix
KW - phasor measurement units
KW - real-time monitoring
KW - sensitivity
UR - http://www.scopus.com/inward/record.url?scp=84984783403&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84984783403&partnerID=8YFLogxK
U2 - 10.1109/TSG.2015.2502484
DO - 10.1109/TSG.2015.2502484
M3 - Article
AN - SCOPUS:84984783403
VL - 7
SP - 2507
EP - 2515
JO - IEEE Transactions on Smart Grid
JF - IEEE Transactions on Smart Grid
SN - 1949-3053
IS - 5
M1 - 7364281
ER -