Assessment of transmission system loadability

Raymond P. Klump, Thomas J. Overbye

Research output: Contribution to journalArticlepeer-review


This paper introduces an improved paradigm for assessing transmission system loadability. The proposed measure, which expresses loadability in terms of a percent loading of system buses, is easy to calculate and provides a more physical understanding of the loadability of various areas of a system. When used in conjuction with system reduction techniques, percent loading estimates quickly identify the weakest areas of a system. The method can be used to assess the effects of proposed power transactions on system security, providing an important component to the determination of transmission system capacity.

Original languageEnglish (US)
Pages (from-to)416-423
Number of pages8
JournalIEEE Transactions on Power Systems
Issue number1
StatePublished - 1997
Externally publishedYes


  • Bifurcation
  • Computation of transmission capacity
  • Maximum loadability
  • Voltage collapse
  • Voltage stability

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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