Gonçalves, Manuel João D.Vale, ZitaRamos, CarlosVale, Zita2026-04-202026-04-202004-07-23Gonçalves, M. J. D. & Vale, Z. (2004, July 21-23). Market power detection — simultaneous interchange capability evaluation under transmission congestion. In Ramos, C. & Vale, Z. (Eds) Proceedings of the International Conference of Knowledge Engineering and Decision Support, ICKEDS´04. (pp. 459-465). Porto. Portugal972-8688-24-5http://hdl.handle.net/10400.22/32233Electric power market is under a rapid changing process world-wide. This new perspective, has given rise to competition with the goal of price fall and market domination. In general, market power is the ability of a particular seller or group of sellers to maintain prices profitably above competition levels for a significant period of time. The paper deals with transaction power tracing in the transmission system in order to evaluate simultaneous interchange capability under forced congestion effects. A method for detection of sellers combined strategies actions is proposed and impact on market distribution is evaluated.engElectricity marketmarket concentrationsimultaneous interchange capabilitypower transfer distribution factorscongestionconference paper