A NEWAGGREGATION METHODFORDETERMINING COMPOSITE LOADCHARACTERISTICS

A new aggregation method for deteiningloadcharacteristics forrepresentation incomputer simulations isproposed. In support of the new method,a mathematical derivationis presented. Also,resultsarecomparedwithmodels obtained by usingtheEPRI/University of Texasat Arlington method andfieldtests.Theapplication of theproposed methodissimpler thanexisting methods inthatitdoesnotrequire fieldtestsortheuseof curvefitting techniques. Theprocedure shouldbeof primaryinterestto transmission systemplanners involvedin load flow and dynamicstability simulations ofpowersystems.