External Topology Tracking Based on State Estimation

Author(s)

Angelos, Eduardo Werley S. ^[1] ; Abur, Ali ^[2] ; Asada, Eduardo N. ^[3] ; Saavedra, Osvaldo R. ^[4]

Affiliation

^[1] Fed Univ ABC, BR-09210580 Santo Andre, SP - Brazil

^[2] Northeastern Univ, Dept Elect & Comp Engn, Boston, MA 02155 - USA

^[3] Univ Sao Paulo, Sao Carlos Sch Engn, Dept Elect & Comp Engn, BR-13566590 Sao Carlos - Brazil

^[4] Univ Fed Maranhao, Inst Elect Energy, BR-65085580 Sao Luis, Maranhao - Brazil

• Document type: Journal article
• Source: IEEE Transactions on Power Systems; v. 36, n. 3, p. 2623-2631, MAY 2021.
• Web of Science Citations: 0

Abstract

A state estimation based approach to obtain an external network equivalent and track topology changes is developed in this work. The proposed approach enables real-time detection and identification of topology-based external events. Following an orthogonal parameter estimator, an index related to the measurement residuals is tracked to detect external disturbances, which are classified based on reference values and actual system data. The method makes use of boundary bus voltages, external currents, an initial snapshot of the network topology, as well as the sensitivity of external changes to the equivalent network. Tests on the IEEE 300-bus and Brazilian 6092-bus systems highlight its capabilities in detecting and identifying shunt, single and double line outages and insertion events. (AU)

• FAPESP's process: 15/16394-3 - External network modeling in a decentralized and generalized state estimation paradigm
• Grantee: Eduardo Werley Silva dos Ângelos
• Support Opportunities: Scholarships abroad - Research Internship - Post-doctor