A transaction assessment method for allocation of transmission services

This paper presents a powerflow based method for an accurate assessment of the impact of a transaction on an area/utility. The method determines for e ach transaction the following: the flowpath of the transaction (both real a nd reactive power components), generator reactive power support from each a rea/utility, and real power loss support from each area/utility. The propos ed method is tested extensively on a real-life system. Results indicate tha t the method is very accurate in allocating the above transmission services on a transaction basis.