Congestion risk management using the probable value of congestion and the optimization of the operating regimes Case study for Western part of Romanian Power System

The power systems, around the world, tend to be forced to operate close to their full capacities, due to the environmental and/or economic constraints to build new power plants and transmission lines. Therefore congestion management became a vital issue within the power system operation, under deregulated environment and can be a major hurdle to trade of electricity if not properly implemented. It ensures the non-violation of operating limits. The first part of the paper deals with the current congestion management mechanisms within the deregulated power market. A synthesis of the congestion management methods and mechanisms involved has been effectuated. Within the second part of the paper a case study for the Western and South Western part of the power system of Romania is presented. Several operating regimes that are leading to special situations are pointed-out, followed by appropriate conclusion.