Transient Signals and Their Processing in an Ultra High-Speed Directional Relay for EHV/UHV Transmission Line Protection

1985 ◽  
Vol PAS-104 (6) ◽  
pp. 1463-1473 ◽  
Author(s):  
O.E. Lanz ◽  
M. Hanggli ◽  
G. Bacchini ◽  
F. Engler
Keyword(s):  
Transmission Line ◽  
High Speed ◽  
Transient Signals ◽  
Ultra High Speed ◽  
Directional Relay ◽  
Transmission Line Protection

Study of Wavelet-Based Ultra-High-Speed Directional Transmission Line Protection

2002 ◽  
Vol 22 (11) ◽  
pp. 54-54 ◽  
Author(s):  
W. Chen ◽  
O. P. Malik ◽  
X. Yin ◽  
D. Chen ◽  
Z. Zhang
Keyword(s):  
Transmission Line ◽  
High Speed ◽  
Ultra High Speed ◽  
Directional Transmission ◽  
Transmission Line Protection

Study of wavelet-based ultra high speed directional transmission line protection

2003 ◽  
Vol 18 (4) ◽  
pp. 1134-1139 ◽  
Author(s):  
Wei Chen ◽  
O.P. Malik ◽  
Xianggen Yin ◽  
Deshu Chen ◽  
Zhe Zhang
Keyword(s):  
Transmission Line ◽  
High Speed ◽  
Ultra High Speed ◽  
Directional Transmission ◽  
Transmission Line Protection

scholarly journals Multi-scale morphological gradient algorithm based ultra-high-speed directional transmission line protection for internal and external fault discrimination

2019 ◽  
Vol 9 (5) ◽  
pp. 3891
Author(s):  
Elmahdi Khoudry ◽  
Abdelaziz Belfqih ◽  
Tayeb Ouaderhman ◽  
Jamal Boukherouaa ◽  
Faissal Elmariami
Keyword(s):  
Transmission Line ◽  
High Speed ◽  
Gradient Algorithm ◽  
Transient Characteristics ◽  
Protection Scheme ◽  
Multi Scale ◽  
Morphological Gradient ◽  
Ultra High Speed ◽  
Directional Transmission ◽  
Transmission Line Protection

<p>This paper introduces an ultra-high-speed directional transmission line protection scheme based on multi-scale morphological gradient algorithm (MSMGA). The directional protection scheme sets down the rules for determining the fault position in relation to the relaying point. The MSMGA is used to extract the fault-induced transient characteristics contained in the voltage and current signals. The associated signals are formed from these transient characteristics and the polarity of their local modulus maxima allow the discrimination between internal and external faults.</p>

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