Adaptive Fault Type Classification for Transmission Network Connecting Converter-Interfaced Renewable Plants

Fault ride through compliance as imposed by the grid codes (GCs) prevents inadvertent disconnection of renewable plants from network even during faults. Control algorithms applied in converters associated with such modulate fault characteristics significantly and result malfunction available type classifiers at times. In this article, an adaptive classification technique is proposed for transmission connecting converter-interfaced plants. The method calculates sequence current angles faulted loop determining pure-fault impedance plant every instant using local voltage data identification. tested different situations on integrated standard systems PSCAD/EMTDC. performance found to be accurate presence types complying GC requirements. Comparative assessment reveals its superior performance.