Stochastic-algebraic calculation of available transfer capability

Jonathan W. Stahlhut, Gerald Thomas Heydt

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


Power systems are stochastic in nature due to uncertainty in bus loading and transmission system asset status. The available transfer capability (ATC) is a measure of "available capacity" in a power transmission system beyond already committed uses, i.e., beyond base case loading. To render the ATC as a more realistic measure of transmission availability, a stochastic calculation of ATC is proposed. A stochastic power flow algorithm can be used to help quantify and evaluate the uncertainty of the ATC. The limitations considered in the stochastic ATC calculation algorithm are: transmission thermal rating limits; bus voltage magnitude limits; and transmission circuit outages. The stochastic-algebraic calculation of ATC is described and tested using a reduced order WECC 179 bus system.

Original languageEnglish (US)
Pages (from-to)616-623
Number of pages8
JournalIEEE Transactions on Power Systems
Issue number2
StatePublished - May 2007


  • Available transfer capability
  • Monte Carlo simulation
  • Power marketing
  • Random processes
  • Stochastic systems

ASJC Scopus subject areas

  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering


Dive into the research topics of 'Stochastic-algebraic calculation of available transfer capability'. Together they form a unique fingerprint.

Cite this