TY - GEN
T1 - Online computation of power system linear sensitivity distribution factors
AU - Chen, Yu Christine
AU - Dominguez-Garcia, Alejandro D.
AU - Sauer, Peter W.
PY - 2013
Y1 - 2013
N2 - Linear sensitivity distribution factors (DFs) are commonly used in power systems analyses, e.g., to determine whether or not the system is N-1 secure. This paper proposes a method to compute linear sensitivity distribution factors (DFs) in near real-time without relying on the system power flow model. Instead, through linear least-squares estimation (LSE), the proposed method only uses high-frequency synchronized data collected from phasor measurement units (PMUs) to estimate the injection shift factors (ISFs). Subsequently, ISFs can be used to compute other DFs. Such a measurement-based approach is desirable since it is adaptive to changes in system operating point and topology. We illustrate the value of the proposed measurement-based DF estimation approach over the traditional model-based method through several examples.
AB - Linear sensitivity distribution factors (DFs) are commonly used in power systems analyses, e.g., to determine whether or not the system is N-1 secure. This paper proposes a method to compute linear sensitivity distribution factors (DFs) in near real-time without relying on the system power flow model. Instead, through linear least-squares estimation (LSE), the proposed method only uses high-frequency synchronized data collected from phasor measurement units (PMUs) to estimate the injection shift factors (ISFs). Subsequently, ISFs can be used to compute other DFs. Such a measurement-based approach is desirable since it is adaptive to changes in system operating point and topology. We illustrate the value of the proposed measurement-based DF estimation approach over the traditional model-based method through several examples.
UR - http://www.scopus.com/inward/record.url?scp=84890494938&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84890494938&partnerID=8YFLogxK
U2 - 10.1109/IREP.2013.6629394
DO - 10.1109/IREP.2013.6629394
M3 - Conference contribution
AN - SCOPUS:84890494938
SN - 9781479901999
T3 - Proceedings of IREP Symposium: Bulk Power System Dynamics and Control - IX Optimization, Security and Control of the Emerging Power Grid, IREP 2013
BT - Proceedings of IREP Symposium
T2 - 2013 IREP Symposium on Bulk Power System Dynamics and Control - IX Optimization, Security and Control of the Emerging Power Grid, IREP 2013
Y2 - 25 August 2013 through 30 August 2013
ER -