Transmission lines protection based on the current eigenvalues differential concept

Abstract

This work presents a new approach for a current differential protection of the transmission lines. The proposed approach is based on the Clarke-Concordia transformation and principal component analysis. First the acquired current signals are transformed into "αβo" components by applying the ClarkeConcordia transformation. This allows obtaining typical patterns. To identify these patterns a principal component analysis is performed. Several tests under different fault conditions were performed. The obtained results allow verifying the effectiveness of the proposed approach.

A novel unit protective relaying concept based on sequential overlapping derivative transform: Interconnected network application

“…Ref. [4] presents an approach for a current differential protection of the transmission lines. This approach is based on the Clarke-Concordia transformation and principal component analysis.…”