Hardware implementation and performance evaluation of the fast adaptive single-phase auto reclosing algorithm

Resumo

Resumo

Abstract This study describes the hardware implementation of a fast adaptive single-phase auto reclosing algorithm based on voltage harmonic content measurement. The proposed algorithm classifies the fault type, preventing reclosing onto permanent fault, and identifies the arc extinction instant, adjusting dead-time to implement reclosing with granted success. The hardware was connected to the Real Time Digital Simulator (RTDS) to perform tests in hardware-in-the-loop (HIL) with a protective relay. The studied system is based on a 500 kV transmission line of the Brazilian electrical power system and eventually real case oscillograms were tested. The algorithm performance was validated with previous software development. However, in the present document we highlight the importance to implement hardware test, as operational limits can only be identified in this last testing stage. Robustness of proposed algorithm based on low-order voltage harmonic content was proved with oscillograms’ tests.

palavras-chave

Palavras-chave

single-phase auto-reclosingadaptive reclosingfault classificationpermanent faultsprotective relayshardware implementationreal-time digital simulationhardware-in-the-loop testing500 kV transmission lines

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