TY - GEN
T1 - Decentralized power system state estimation
AU - Kekatos, Vasileios
AU - Giannakis, Georgios B
PY - 2012/12/1
Y1 - 2012/12/1
N2 - Recent advances in metering technology, deregulation of the energy market, rapid penetration of renewables, and the smart grid vision for situational awareness, all call for a system-wide power system state estimation (PSSE). On the other hand, complexity of an interconnected power grid, privacy policies of local authorities, and vulnerability concerns preclude a centralized estimator. In this context, several possible manifestations of PSSE are treated in the present paper under a unified and systematic framework. Building on the alternating direction method of multipliers, a novel decentralized PSSE approach is developed. The obtained algorithm waives local observability concerns, leverages existing software, while requiring local system operators exchange minimal information only across tie lines. Numerical tests on two commonly used benchmarks, namely IEEE 14- and 118-bus power grids, show that the desired statistical accuracy is attained within 5-10 inter-area exchanges.
AB - Recent advances in metering technology, deregulation of the energy market, rapid penetration of renewables, and the smart grid vision for situational awareness, all call for a system-wide power system state estimation (PSSE). On the other hand, complexity of an interconnected power grid, privacy policies of local authorities, and vulnerability concerns preclude a centralized estimator. In this context, several possible manifestations of PSSE are treated in the present paper under a unified and systematic framework. Building on the alternating direction method of multipliers, a novel decentralized PSSE approach is developed. The obtained algorithm waives local observability concerns, leverages existing software, while requiring local system operators exchange minimal information only across tie lines. Numerical tests on two commonly used benchmarks, namely IEEE 14- and 118-bus power grids, show that the desired statistical accuracy is attained within 5-10 inter-area exchanges.
KW - Alternating direction method of multipliers
KW - multi-area state estimation
KW - phasor measurement units
UR - http://www.scopus.com/inward/record.url?scp=84877679162&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84877679162&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2012.6503597
DO - 10.1109/GLOCOM.2012.6503597
M3 - Conference contribution
AN - SCOPUS:84877679162
SN - 9781467309219
T3 - GLOBECOM - IEEE Global Telecommunications Conference
SP - 3141
EP - 3146
BT - 2012 IEEE Global Communications Conference, GLOBECOM 2012
T2 - 2012 IEEE Global Communications Conference, GLOBECOM 2012
Y2 - 3 December 2012 through 7 December 2012
ER -