Joint Estimation of Operational Topology and Outages for Unbalanced Power Distribution Systems

Gandluru, Anandini; Poudel, Shiva; Dubey, Anamika

doi:10.1109/tpwrs.2019.2935401

Joint Estimation of Operational Topology and Outages for Unbalanced Power Distribution Systems

Journal Article · Wed Aug 14 00:00:00 EDT 2019 · IEEE Transactions on Power Systems

DOI:https://doi.org/10.1109/tpwrs.2019.2935401· OSTI ID:1810577

Gandluru, Anandini ^[1]; ^[2]; ^[2]

Washington State Univ., Pullman, WA (United States); Washington State University
Washington State Univ., Pullman, WA (United States)

An electric power distribution system is operated in several distinct radial topologies by opening and closing of system's sectionalizing and tie switches. The estimation of the system's current operational topology is a precursor to implementing any optimal control actions (during normal operation) or restorative actions (during outage condition). This paper presents a mathematical programming approach to estimate the operational topology of a three-phase unbalanced power distribution system under both outage and normal operating conditions. Specifically, a minimum weighted least absolute value estimator is proposed that uses the line flow measurements, historical/forecasted load data, and ping measurements and solves a mixed-integer linear program (MILP) to estimate the operational topology and any outaged sections simultaneously. We thoroughly validate the accuracy of the proposed approach using IEEE 123-bus and a 1069-bus three-phase multi-feeder test system with the help of numerous simulations. As a result, it is observed that the approach performs well even at high percentages of measurement errors.

View Accepted Manuscript (DOE)

Research Organization:: Washington State Univ., Pullman, WA (United States)

Sponsoring Organization:: USDOE

Grant/Contract Number:: OE0000878

OSTI ID:: 1810577

Alternate ID(s):: OSTI ID: 1801335

Journal Information:: IEEE Transactions on Power Systems, Journal Name: IEEE Transactions on Power Systems Journal Issue: 1 Vol. 35; ISSN 0885-8950

Publisher:: IEEECopyright Statement

Country of Publication:: United States

Language:: English

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