연계계통에서 안전도제약을 고려한 최적전력조류

Abstract

This paper presents a hybrid a lgorithm for solving security constrained OPF in interconnected power systems, which is based on the combined app lica tion of evolutionary programm ing (EP) and sequential quadratic programm ing (S Q P ) . The objective functions are the m in im iza tion of generation fuel costs and system power losses. In OPF considering security, the outages are selected by contingency rank ing method. The control variables are the active power of the generating un its , the voltage magn itude of the generator, transformer tap settings and SVC setting. The state variables are the bus voltage magn itude , the reactive power of the generating un it, line flows and the tie line flow. The method proposed is applied to the modified IEEE 14buses model system.