Proposta de melhoramento do sistema de proteção da linha DL4/DL22

Abstract

This report was prepared with the aim of improving the efficiency of the protection system on the Main Line DL4 and on the Derivative Line DL22, in order to improve the power supply to Substation number 7. Derivations in their usefulness have advantages by reducing the cost of implementation, but the cost of maintenance tends to be much more expensive, because they have limitations of continuity of service, with regard to the response to the action of defects that occur along the lines. intervening lines. Thus, when a fault occurs (whether it is a maneuver or an atmospheric impulse) along DL4 or DL22, the protection removes the power supply from the entire radial line, limiting the power supply to SE7. It is natural that there are more alternative lines to feed the SE7, but it is legitimate that the lines are reliable in the purpose for which they were built, taking into account and considering that the principle of line contingencies does not apply. Knowing that CTM is a large energy producer, however, there are future power supply projects through the generation of CTM, which means that SE7 will be fed from both SE INF and SE CTM, thus relieving transformers of Infulene and taking advantage of the Central's energy to increase the quality of energy for consumers. Thus, the work begins with the analysis of the protection functions that control the DL4 Transport line, and culminates with the insertion of a bus bar that aims to separate, when necessary, as well as guarantee the selectivity and functionality of the system, the main line that delivers power to DL22, which in a way will individualize the protection function of DL4 towards SE Infulene to SE7, as well as the protection of DL4 towards SE CTM to SE7.