Multiple-Element Contingency Screening

The main focus of this work is to efficiently determine the double-outage contingencies that threaten the operation of the power system. This work is necessary because enormous numbers of double-outage contingencies exist for even relatively small systems, and new standards require system operators to begin considering more than single-outage contingencies. Without an efficient method for predicting the severe contingencies, the entire set of double-outage contingencies has to be solved, and this means solving many millions of contingencies. Several algorithms are presented to detect double-outage contingencies that result in violations. The algorithms use varying amounts of information. However, at most they use linear sensitivities, line limit information, and line flow information. The output of the screening algorithms is compared to the full set of results for the double-outage contingency analysis, solved using the dc power flow. The results show that, even using a very limited amount of information about the system, it is possible to predict a very high percentage of the double-outage contingencies that result in violations.

Name thesis:degree_name

Ph.D.

Level thesis:degree_level

Dissertation

Discipline thesis:degree_discipline

Electrical and Computer Engineering

Grantor

University of Illinois at Urbana-Champaign

Year dc:date

2009

Author dc:creator

• Davis, Charles

Contributors dc:contributor

• Overbye, Thomas J.
• Sauer, Peter W.
• Nicol, David M.
• Domínguez-García, Alejandro D.
• Grijalva, Santiago

• contingency analysis
• linear analysis
• multiple-outage contingency
• contingency screening

Statement dc:rights

• Copyright 2009 Charles Davis

Handle dc:identifier

http://hdl.handle.net/2142/11976

OAI identifier oai:identifier

oai:www.ideals.illinois.edu:2142/11976