Transient stability-constrained maximum allowable transfer

Abstract

A method is proposed for allocating generation so as to maximize power transfer between areas of interconnected power systems under transient stability constraints. This "transient stability-constrained maximum allowable transfer" (MAT) method consists of screening a large number of contingencies, scrutinizing the dangerous ones and suggesting generation rescheduling patterns to stabilize them. The MAT method is based on SIME, a hybrid transient stability method. Like SIME, MAT is accurate and free from simplifying assumptions about modelling, stability scenarios and instability modes. In addition, by controlling all dangerous contingencies simultaneously, the method succeeds in being fully compatible with requirements for real-time preventive monitoring and control. The method is illustrated on the South-Southeast Brazilian power system, operating under highly stressed conditions imposed by large power transfer between areas.