Hi Acker, The 2 busbars must have been coupled through a circuit breaker. You can used the given parameters (R, X) of the circuit breaker as the branch impedance value. This values will depend whether it is high voltage circuit breaker or low voltage circuit breaker. For instance, 400V breaker typical value of X is 0.15 milliohms and R=0 can be assumed. So instead of using R=0, X=0, try to make X a very small value. ________________________________
From: [email protected] [[email protected]] on behalf of Hendrik Acker [[email protected]] Sent: Thursday, April 18, 2013 8:50 AM To: [email protected] Subject: Ideally coupled busbars Hi everyone, dear Mr. Zimmerman I’m having problems with implementing ideally coupled bus bars. In the UCTE Format 2 bus bars are coupled with an branch which has R=0 X=0 and B=0. Matpower however cannot work with this as the Matrix singular. If I put R=0 and X small I get really weird high flows of P=XXX^6 MW. What can I do to couple 2 busbars? (Except replacing them by only 1 node-point) Best regards M.sc. Hendrik Acker ***************************************************************** Technische Universität Kaiserslautern Fachbereich Elektrotechnik und Informationstechnik Lehrstuhl für Energiesysteme und Energiemanagement Erwin-Schrödinger-Straße 67663 Kaiserslautern Tel.: +49 (0)631 / 205 - 3037 Fax: +49 (0)631 / 205 - 2168 Mail: [email protected]<mailto:[email protected]>
