Adaptability analysis of differential protection for renewable energy outgoing lines based on current complex plane
Abstrak
Differential protection is a primary protection scheme commonly deployed for high-voltage AC outgoing lines connecting renewable energy power plants. To holistically evaluate its adaptability in such scenarios， this paper proposes an adaptability analysis method for power-frequency differential protection based on the current complex plane. By leveraging the characteristics of the current complex plane， the method decouples the influence of fault current magnitude， phase angle， and restraint coefficient from both line terminals on protection adaptability. It quantitatively analyzes how the current magnitude and controlled phase characteristics of renewable energy sources affect protection adaptability. Based on this analysis， requirements for selecting the restraint coefficient of differential protection are established， offering practical guidance for setting the protection restraint coefficient in renewable energy grid integration projects.
Topik & Kata Kunci
Penulis (3)
YU Su
ZHOU Zexin
WANG Xingguo
Akses Cepat
- Tahun Terbit
- 2025
- Sumber Database
- DOAJ
- DOI
- 10.19585/j.zjdl.202508007
- Akses
- Open Access ✓