Optimal Power Flow Calculation Structure for Energy Management System in Real-Time

Traditional power system analysis needs to bechanged because of the application of the distributed energyand the smart grid concept. The changes are real-timecalculations for the operation support and object-basedcalculations for responding to the power system control (somechanges). And we need to calculate a power system networkstatus with constraint problems of line currents, bus voltagesand generation powers (active and reactive). But traditionalpower system analysis is not prepared for these problems. Inthis paper, we suggest a structure of Optimal Power Flow(OPF) calculation structure based Object-OrientedProgramming (OOP) and it's application with secureconstraintproblem.