A new principle for high resistance earth fault detection during fast power swings for distance protection

1997 ◽  
Vol 12 (4) ◽  
pp. 1452-1457 ◽  
Author(s):  
A. Mechraoui ◽  
D.W.P. Thomas
Keyword(s):  
Fault Detection ◽  
High Resistance ◽  
Distance Protection ◽  
Earth Fault ◽  
Fast Power ◽  
Power Swings

A novel summation impedance protection adaptive to high-resistance earth fault detection

2015 ◽  
Vol 10 (5) ◽  
pp. 539-546 ◽  
Author(s):  
Ning Tong ◽  
Shan He ◽  
Xiangning Lin ◽  
Rui Zhang ◽  
Dexian Yang
Keyword(s):  
Fault Detection ◽  
High Resistance ◽  
Earth Fault

A Novel Power Swing Blocking Scheme Using Orthonormal Wavelet Analysis

2012 ◽  
Vol 433-440 ◽  
pp. 6935-6942
Author(s):  
Yi Hui Zhang ◽  
Hai Yan Zhang ◽  
Wei Li Xu
Keyword(s):  
Fault Identification ◽  
Test Results ◽  
Distance Protection ◽  
Orthonormal Wavelet ◽  
Paper Test ◽  
Power Swing ◽  
Different Types ◽  
Fast Power ◽  
Real Time Applications ◽  
Power Swings

A new scheme for fault identification during power swings is proposed in this paper. The new scheme is based on the orthonormal wavelet transform algorithm. The main advantage of the proposed scheme is that different types kinds of fault of the transmission line can be correctly identified from different types of the fast power swings. Also, the faults during power swings can be identified from the power swings with the proposed scheme without any time delay. Furthermore, the problem whether the protection should trip or not immediately for the distance protection is discussed in the paper. Test results with the data sampled from EMTP verify the effectiveness of the proposed scheme. Furthermore, another advantage of this algorithm is that it can be realized for the real-time applications with finite real calculation.

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