| The worldwide power industry is experiencing unprecedented restructuring forbreaking traditional monopoly, introducing competition and establishing electricitymarkets. The innovation of electric power industry from vertical integrated monopoly tocompeted market creates a new developmental opportunity for electric, power industry,while gives rise to many new problems and challenges such as transmission congestion.The electricity which is the good of the electricity market has many special characteristics.It must depend on the network to transfer electricity. If we really hope that the substanceof market competition can be embodied and to improve efficiency of electric system,optimize resources, we must take efficient measures to manage transmission congestion.Viewing from power network dispatcher, congestion management aims for adjustinggenerations and loads to relieve congestion and allocating rationally the congestion costs.Viewing from market participants, when the transmission resources are really limited, theaim of congestion management is to give them the means to avoid congestion risk. Bothof them want to Elimination the transmission congestion, but they have different desiresso the management methods are different. This is the problem which congestionmanagement need to solve.The paper formulizes most transmission recently. Particularly, transmission rights arecongestion management methods presented introduced and analyzed in detail. FGR andFTR are illuminated detail. Analyzing their main advantages and disadvantages, and thena hybrid transmission right is improved. It is a financial insurance. In FGR or FTR,buying transmission right means buying the right to use some lines, but in this method themarket participants buy insurance to hedge their transactions. So when lines are congested,the market participants do not have to suffer the risk of the electricity price rising. Theeffectiveness and practicality of the model are verified by some numerical samples. |
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