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Title:Quickest change detection with applications to line outage detection
Author(s):Rovatsos, Georgios
Advisor(s):Veeravalli, Venugopal V
Department / Program:Electrical & Computer Eng
Discipline:Electrical & Computer Engr
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Power System Line Outage Detection and Identification
Quickest Change Detection
Sequential Analysis
Abstract:In this work, we focus on applications of quickest change detection (QCD) theory in the problem of line outage detection and identification. We start by discussing fundamental results of sequential hypothesis testing and QCD, and by proposing an algorithm for the QCD setting under transient dynamics. Following, we apply these results in the line outage detection problem. QCD algorithms are applied on measurements of voltage phase angles, which are collected using phasor measurement units (PMUs), sampling units that sample at an approximate rate of 30 samples per second and that are placed in the buses of the system. The goal is to detect a line outage as fast as possible, under false alarm constraints. First, we study the line outage setting where no transient dynamics are present. Then, we propose a QCD algorithm for the case where transient dynamics are present. Line outage identification schemes are also discussed.
Issue Date:2016-07-21
Rights Information:Copyright 2016 Georgios Rovatsos
Date Available in IDEALS:2016-11-10
Date Deposited:2016-08

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