The Research on Directional Elements of High-Voltage Line Protections Based on Zero-Sequence Reactance of Fault Components

Abstract:

Zero-sequence directional elements under a small voltage are studied and a new directional element based on zero-sequence reactance of fault components is presented. From analysis and simulations we have that when a forward fault or a reverse fault occurs, the zero-sequence reactance of a fault component will less or larger than the line zero-sequence reactance respectively. Therefore, the direction of a fault can be distinguished. The simulation results of EMTP show that the directional element based on zero-sequence reactance of fault components can identify forward and reverse faults accurately and it can satisfy requirements of relay protections for high-voltage lines.

• Periodical: Advanced Materials Research (Volumes 424-425)
• Pages: 511-515
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.424-425.511
• Online since: January 2012
• Authors: Xiao Hui Zeng, Yong Hui Chen, Hong Song
• Keywords: Directional Element, High-Voltage Line, Voltage Threshold, Zero-Sequence Reactance

References

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