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Expired Canadian patentCanada

Method of fast super decoupled loadflow computation for electrical power system

CA 2107388 C · Owner: Patel, Sureshchandra B. · Inventors: Patel, Sureshchandra B.

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Abstract From the Canadian patent

The loadflow computation method of the present invention called Fast Super Decoupled , Loadflow (FSDL) is characterized by the use of 1) the slack-start whereby the same voltage , magnitude and angle as those of the slack-node are used for all the other nodes as an initial guess , solution, and thereby reducing almost all effort of mismatch calculation in the first P-.theta. iteration, and PV-nodes voltage magnitudes are assigned their known values while updating voltage angles , after P-.theta. iteration 2) the restricted rotation angles to the maximum of -36 degrees for improved , convergence in the situations of low voltage solution 3) the gain matrices , Y.theta., and YV whose …

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed November 9, 1993 and granted July 5, 2011. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended November 9, 2013.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 9, 2015.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledNovember 9, 1993
GrantedJuly 5, 2011
Term endedNovember 9, 2013
Patent numberCA 2107388 C
Classification (IPC)H02J3/12 +2 more

Timeline

Timeline From CIPO dates

1994199619982000200220042006200820102012Application filedNov 9, 1993Patent grantedJuly 5, 2011Term endedNov 9, 2013

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.