Transient pilot protection based on directional traveling wave principle for wind power transmission line

• DOI: 10.1016/j.ijepes.2024.109835
• Publication Date: 2024-02-05T21:48:09Z
• Authors: Hongchun Shu; Yaqi Deng; Pulin Cao; Mengmeng Zhu; Na An; Guangxue Wang
• Keywords: Transient (computer programming); Line (geometry); Power transmission

The short-circuit current from the new energy power generator presents special characteristics such as frequency shift, restricted amplitude, unequal positive and negative sequence impedance, high percentage of harmonic content, etc., resulting in risk misoperation or rejection conventional protection. By analyzing propagation traveling wave transmission line after fault, this paper reveals difference between waveforms at both ends under internal fault external fault. similarity forward reverse is higher when an occurs, while lower According to difference, a pilot protection algorithm based on discrete Frechet distance proposed, which can calculate coefficient construct criteria, then identify Through analysis PSCAD/EMTDC experiment platform hardware-in-the-loop test verify that proposed accurately reliably distinguish