Localização de faltas em tempo real baseada na teoria de ondas viajantes usando dados não sincronizados de dois terminais.

Abstract

A new two-terminal traveling wave-based fault location method is proposed in this thesis. It consists on the real-time transient detection on voltage and current monitored signals and requires the existence of a communication system for the exchange of information between local and remote line terminals. To develop this solution, it is proposed: (i) a novel traveling wave detection technique based on Park’s transformation, which allows a very simple and robust real-time fault-induced transient identification; (ii) a new two-terminal traveling wave-based fault location formulation, which, unlike the classical ones, is executed in real-time considering the communication system latency effect, without requiring data synchronization. The proposed method evaluation and validation are carried out through digital fault simulations using the Alternative Transients Program (ATP) and the Real Time Digital Simulator (RTDSTM), in which fictitious and actual transmission lines are considered, whose parameters are from electrical power systems belonging to the Brazilian Power System Grid. The obtained results prove the proposed method efficiency to detect and locate faults in real time, using two-terminal unsynchronized data.