Quickest change detection with applications to line outage detection

Rovatsos, Georgios

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https://hdl.handle.net/2142/92657 Copy

Description

Title

Quickest change detection with applications to line outage detection

Author(s)

Rovatsos, Georgios

Issue Date

2016-07-21

Director of Research (if dissertation) or Advisor (if thesis)

Veeravalli, Venugopal V.

Department of Study

Electrical & Computer Eng

Discipline

Electrical & Computer Engr

Degree Granting Institution

University of Illinois at Urbana-Champaign

Degree Name

M.S.

Degree Level

Thesis

Keyword(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.

Graduation Semester

2016-08

Type of Resource

text

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http://hdl.handle.net/2142/92657

Copyright and License Information

Copyright 2016 Georgios Rovatsos

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