Generalized line outage distribution factors

Teoman Güler, George Gross, Minghai Liu

Research output: Contribution to journalArticlepeer-review


Distribution factors play a key role in many system security analysis and market applications. The injection shift factors (ISFs) are the basic factors that serve as building blocks of the other distribution factors. The line outage distribution factors (LODFs) may be computed using the ISFs and, in fact, may be iteratively evaluated when more than one line outage is considered. The prominent role of cascading outages in recent blackouts has created a need in security applications for evaluating LODFs under multiple-line outages. In this letter, we present an analytic, closed-form expression for and the computationally efficient evaluation of LODFs under multiple-line outages.

Original languageEnglish (US)
Pages (from-to)879-881
Number of pages3
JournalIEEE Transactions on Power Systems
Issue number2
StatePublished - May 2007


  • Line outage distribution factors (LODFs)
  • Multiple-line outages
  • Power transfer distribution factors (PTDFs)
  • System security

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


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