Abstract: Open access to transmission networks, and the growing of electricity consumption have increased the presence of transmission congestion. To ensure system security in competitive electricity markets, a major task of the system operator is congestion management. This paper addresses a new framework for congestion management. The framework utilizes network distribution shift factors for congestion management. Within this framework, a new security based congestion management (SBCM) scheme has been developed. This framework considers security in congestion management (CM) so that, network security is included in the objective function of congestion management problem. In our proposed SBCM algorithm, the network security is considered in congestion management process so that economic advantages are preserved in managing network congestion. Appropriate functioning of the proposed SBCM algorithm has been evaluated by applying it to IEEE 9-bus and 30-bus test systems. Simulation results confirm that our proposed method compared with conventional congestion management methods is more efficient in managing network congestions.

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