The　research　of　optimal　power　flow　simulation　in　power　systems　finds　that　interior　point　cutting　plane　method　(IPCPM)　fails　to　solve　the　linear　programming　problem　which　has　multiple　solutions.　A　new　general　optimal　base　identification　method　was　presented　to　solve　the　above　problem　by　revolving　and　mapping　the　solution　space,　which　could　move　the　optimum　along　the　edge　of　the　feasible　region　to　the　vertex　of　solution　space.　Furthermore,　two　measures,　stochastic　disturbance　method　and　ladder　matrix　method,　were　used　to　enhance　the　calculation　efficiency　of　IPCPM.　Simulation　shows　that　the　calculation　time　was　saved　by　20%　in　average.　Simulation　results　of　IEEE　14-300　buses　test　systems　indicate　that　the　improved　algorithm　can　properly　handle　various　types　of　optimal　solutions　and　significantly　enlarge　the　application　field　of　IPCPM.