Transient Stability Constrained Optimal Power Flow Using Evolutionary Programming
نویسندگان
چکیده
This paper presents an application of evolution programming (EP), which has no limitation on objective function, for transient stability constrained optimal power flow (TSCOPF) problem. Swing equation and limit of rotor angle deviation with respect to centre of inertia (COI) are treated as additional constraints in transient stability concern. The generator fuel cost minimization is selected as the objective function for TSCOPF. The proposed method is tested with WSCC 9-bus and IEEE 30bus systems with three different generator cost curves to represent the combined cycle generating unit and valve point loading effect of the thermal generating unit. A three-phase fault at a specific transmission line is considered as a single contingency. The simulation results show the solution from TSCOPF can guarantee the transient stability in the systems after a fault, but it causes higher operating cost compared to that from conventional OPF.
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