Resumo:
This dissertation proposes a new method for allocating costs of transmission systems consider-ing the intermittency of wind sources. Initially, the mathematical formulation of the transmis-sion cost allocation method is presented, which is based on that one currently adopted in Brazil. This method breaks down the total cost of the transmission system into two components: the cost of the used portion of the transmission capacity, allocated to users according to the actual use of the network; and the cost of the unused portion of the transmission, rated among users in proportion to the magnitudes of their generation and consumption. The main contribution of this dissertation is the insertion of a nodal transmission pricing scheme in a chronological simulation environment, which allows analyzing the behavior of transmis-sion charges in relation to the variable power output of wind sources. The objective is to calcu-late an equivalent tariff for each market participant of generation and load sectors, considering the operational reality of the electrical system. The proposed method is applied to a modified configuration of the IEEE-RTS (Reliability Test System) with insertion of a wind power plant. In the same system, deterministic pricing meth-ods are also applied, allowing the comparison among resulting tariffs. Several tests are carried out and their results extensively discussed.
