Transmission lines protection based on the current eigenvalues differential con...

• Author(s): Pires, V. Fernão ; Guerreiro, M. ; Fortunato, Carlos ; Martins, L. Sousa
• Date: 2010
• Origin: Repositório Comum
• Subject(s): Current differential protection; Eigenvector; Eigenvalue; Line protection; Digital relay
• Document Type: Conference Object
• Language: English

Description

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 Clarke-Concordia 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.