Estudo, aplicação e teste de religadores automáticos de sistemas de distribuição de energia elétrica

Abstract

To ensure the quality of the electricity supply service and a low level of interruptions, studies are necessary to use equipment that prevents accidental shutdowns. In order that no loads are cut off when not located in the fault region, in case this shutdown occurs, be possible to fastly restore the power supply service. This re-establishment can be performed by the equipment Automatic Recloser, which operates in medium voltage distribution systems as a current switch. The equipment subsumes several components required for protection of an entire electrical system inside a set of couple volumes: the control cabinet and the recloser switch. The proposed study intends to apply protection functions available in that equipment, resources that allow the implementation of a Smart Grid, with low investment in equipment and communication networks. Together with the verification and tests of protection functions through voltage and current application, generated through simulations performed with use of a test case, directly to the measurement channels of protection relays of automatic reclosers. An analysis has been performed with the automatic generated oscillographs for each operation of protection functions of those devices or for each trip command.