Abstract
The purpose of this study takes advantage of real-time hardware and software co-simulation to integrate a recursive least-square adaptive filter into a relay design for transmission line protection. The relay trip logic is controlled with a recursive least-square filter that analyzes the weights and cumulative error auto-correlation for magnitude and angles per phase. This analysis allows to detect and identify the fault type. The study focuses on the modelling of a consistent testing case study designed for transmission lines protections based on the EMTP reference model. The proposed solution could be scalable to protect other elements in power systems. It is consistent with current technological tools, and the RLS algorithm optimizes the computational performance of the relay.
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