A new method for transmission loss allocation considering the circulating currents between generators

new method is presented for transmission loss allocation based on the separation of transmission loss caused by load and the loss due to rculating currents between generators. The theoretical basis for and derivation of the loss formulae are presented using simple systems. The concept is then extended to a general power system using the Y-bus model. Details of the application of the proposed method to a typical power stem are presented along with results from the IEEE 30 bus test system. The results from both the small system and the standard IEEE test system demonstrate the validity of the proposed method. Copyright (C) 2010 John Wiley & Sons, Ltd.