A novel topological approach to examine network observability under a contingency

Garng Morton Huang, Jiansheng Lei

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

A reliable state estimator to withstand a contingency becomes more and more important due to the increasing concerns on the network security in a deregulated power market. A novel topological approach is proposed in this paper to identify critical measurements and to examine network observability under a contingency, where the contingency can be any single branch outage or measurement loss. To advance the classical topological observability analysis, a new concept of contingency observability graph (COG) is introduced and it is proven that a power system network maintains its observability against a contingency if and only if its COG satisfies some conditions. With little extra computation load, the proposed COG based approach is a natural extension of the classical topological observability analysis for online applications. The IEEE 30-Bus system is used to demonstrate the validity and efficiency of our approach.

Original languageEnglish
Title of host publication2007 IEEE Power Engineering Society General Meeting, PES
DOIs
Publication statusPublished - 1 Dec 2007
Externally publishedYes
Event2007 IEEE Power Engineering Society General Meeting, PES - Tampa, FL, United States
Duration: 24 Jun 200728 Jun 2007

Other

Other2007 IEEE Power Engineering Society General Meeting, PES
CountryUnited States
CityTampa, FL
Period24/6/0728/6/07

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Keywords

  • Contingency observability graph
  • Critical measurement identification
  • Network observability under a contingency
  • Network security in power market
  • State estimation
  • Topological network observability analysis

ASJC Scopus subject areas

  • Energy(all)

Cite this

Huang, G. M., & Lei, J. (2007). A novel topological approach to examine network observability under a contingency. In 2007 IEEE Power Engineering Society General Meeting, PES [4275622] https://doi.org/10.1109/PES.2007.385856