I may have more insight if you want to send me the case (off-list) so I can have a look at the details.
-- Ray Zimmerman Senior Research Associate 419A Warren Hall, Cornell University, Ithaca, NY 14853 phone: (607) 255-9645 On May 13, 2013, at 11:27 AM, Jiashen Teh <[email protected]> wrote: > Dear Dr Ray, > > seeing my network description: > > 3 bus network, only contains generators and dispatchable load (real and > reactive load), I obtained a converged result from MATPOWER even though I set > my generator to have 0 reactive power output. > > Why is this happening? > Thank you > > > Yours sincerely, > > Jiashen Teh > PhD Student > Electrical Energy & Power Systems Group, School of Electrical & Electronic > Engineering > Ferranti Building (B18), The University of Manchester, M13 9PL, United Kingdom > Tel: +44 (0) 161 306 2263; Mobile: +44 (0) 792 322 4864 > From: [email protected] > [[email protected]] on behalf of Jiashen Teh > [[email protected]] > Sent: 13 May 2013 16:00 > To: MATPOWER discussion forum > Subject: RE: Reactive power output > > however, in my network does not have other elements besides generator and > dispatchable load > > > Yours sincerely, > > Jiashen Teh > PhD Student > Electrical Energy & Power Systems Group, School of Electrical & Electronic > Engineering > Ferranti Building (B18), The University of Manchester, M13 9PL, United Kingdom > Tel: +44 (0) 161 306 2263; Mobile: +44 (0) 792 322 4864 > From: [email protected] > [[email protected]] on behalf of Ray Zimmerman > [[email protected]] > Sent: 13 May 2013 15:50 > To: MATPOWER discussion forum > Subject: Re: Reactive power output > > Generators are not the only source of reactive power. The network itself > (capacitive elements in particular) also generate reactive power. > > -- > Ray Zimmerman > Senior Research Associate > 419A Warren Hall, Cornell University, Ithaca, NY 14853 > phone: (607) 255-9645 > > > > > On May 13, 2013, at 10:05 AM, Jiashen Teh <[email protected]> > wrote: > >> Dear Dr Ray, >> >> I have 3 dispatchable load with real and reactive power demand. >> >> In order to see how Matpower react, I purposely make all of my generators to >> have 0 reactive power output. >> When I run ACOPF, MATPOWER showed me some of the reactive load had been >> satisfied. >> >> May i know why? isn't that MATPOWER should fail to converge because I have >> reactive load but I dont have reactive source? >> >> thank you >> >> >> Yours sincerely, >> >> Jiashen Teh >> PhD Student >> Electrical Energy & Power Systems Group, School of Electrical & Electronic >> Engineering >> Ferranti Building (B18), The University of Manchester, M13 9PL, United >> Kingdom >> Tel: +44 (0) 161 306 2263; Mobile: +44 (0) 792 322 4864 > >
