Implementação e avaliação da função de proteção diferencial em linhas de transmissão.

Abstract

To ensure that the system operates safely and objectivity is present to protect the electrical system, which ensures that in case of failure of the system it will not harm the entire electrical system. Protective relays have distinct features as distance protection, overcurrent protection, differential protection, among others, however, the same relay can contain all of these functions are digital relays, that with the development of new technologies have dominated the market of electricity. The differential protection, one of the functions of a digital relay, ensures protection of short transmission lines. This work consists in the implementation and evaluation of the function of the differential protection of transmission lines using the CAPE software. For be unusual the use of differential protection of transmission lines, some adaptations was realized on the models and software results.