Power System Aggregate Load Area Modeling

This paper presents an aggregate load area model (ALAM) for modeling of an area load in a power system. The loads at different buses within conjunctional areas can be integrated and modeled using this method. The parameters of the ALAM are identified using a genetic algorithm (GA). A two-step identification scheme is employed to reduce the computation cost. The fictitious line impedance and susceptance of the aggregate load area are identified with a modified approach to ALAM. The simulation studies using an IEEE 14-bus and an IEEE 57-bus power system are carried out respectively. Verification results show that the ALAM can represent the area load accurately