Filosofias de proteção e teleproteção de linhas de transmissão.

Abstract

The word developed here has the purpose of presenting the most common philosophies of protection and teleprotection of transmission lines and their implementation by using logic diagrams for digital relays. As an illustration, it's done a case study of logic diagrams used by the protection relays of line 04M1 from the substation Ribeirão, which belongs to Chesf's system. Initially, it's stated the main components of the protection chain and of the elements of the protection lines, and the study of the most usual protection and teleprotection schemes, which are implemented by the relays from the case study. Finally, it's stated an structure of the substation Ribeirão bus in the 203 kV sector, where is located the studied line porthole and next it's done a description of the logic diagrams used by the protection relays from line 04M1.