Unreliability and responsibility of generation and transmission companies in restructured power systems with Poolco market

This paper presents a technique to evaluate unreliabilities and responsibilities of power market participants such as Gencos, transmission network and customers in a restructured power system. An optimal power flow (OPF) model subject to market and network constraints is used to determine load curtailment, generation re-dispatched and reserve dispatched. Reliability and economic indices for market participants are introduced in this paper to represent their unreliabilities and the associated responsibilities. The modified IEEE-RTS with the Poolco market structure has been analyzed to illustrate the techniques. The proposed technique can be used to evaluate both conventional and restructured power systems, and can provide both economic and reliability information for the independent system operator to manage system reliability, for Gencos to enhance their reliability, and for customer to select suppliers based on their reliability requirements.