A New ResearchforInternal FaultSimulation

In ordertoimprovetheability oftransformer differential protection intheinternal fault identification, this paper proposes aalgorithm based onthemagnetic transient modelforthe internal fault simulation ofthree-phase andthree-leg transformer. theinternal fault parameters ofmodelarerelative tothe transformer structure. Theestablished process ofInternal fault modelforthreephaseand three-leg transformer isgiven particularly. Thesimulating calculation considers a newfitting methodforthehysteresis loopoftransformer basedon SVM(Support VectorMachine) issetforth, whichisoriginal optimization ofthehysteresis looptestdataregression translates intotheallelomorph optimization.. According tothefractal characteristic oflocal hysteresis loop,aresearch forinternal fault simulation ofthree-phase andthree-leg transformer isputup.The application oftheproposed algorithm toatestsystem showsits validity andcorrectness.