Sigre 2015. — 9 с.
USP – University os São Paulo-POLI/PEA, SIEMENS, Brazil, [email protected]Properly protecting a transmission line of extra high voltage equipped with series compensation it is still a major challenge for the system protection engineers. The applied conditions resulting from this configuration still present operating conditions not properly resolved that entail great difficulties in determining your settings, and with the risk of an almost certain improper actuation eminent for the reasons to be exposed during the presentation of this work. Another aspect to be considered is that, in many of these applications, the manufacturers of relays available in the market today present the characteristic impedance type MHO or quadrilateral for measurement of these impedances, which implies in some cases to increase the performance of the respective protection zones (mostly the zone 1), compromising their respective times of network stability or reducing significantly your range precisely because of the presence of these capacitors looking to avoid undue performances for faults in parallel circuits and or at the beginning of the circuit.
