Digital distance relaying algorithm for first-zone protection for parallel transmission lines

1998 ◽  
Vol 145 (5) ◽  
pp. 531 ◽  
Author(s):  
Y. Liao ◽  
S. Elangovan
Keyword(s):  
Transmission Lines ◽  
Parallel Transmission ◽  
Distance Relaying

On-line Adaptive and Intelligent Distance Relaying Scheme for Power Network

2015 ◽  
Vol 16 (5) ◽  
pp. 473-489
Author(s):  
Rahul Dubey ◽  
S. R. Samantaray ◽  
B. K. Panigrahi ◽  
G. V. Venkoparao
Keyword(s):  
Power Systems ◽  
Transmission Lines ◽  
Model Updating ◽  
Test System ◽  
Operating Conditions ◽  
Power Network ◽  
Parallel Transmission ◽  
On Line ◽  
Distance Relaying ◽  
Learning Machine

Abstract The paper presents an on-line sequential extreme learning machine (OS-ELM) based fast and accurate adaptive distance relaying scheme (ADRS) for transmission line protection. The proposed method develops an adaptive relay characteristics suitable to the changes in the physical conditions of the power systems. This can efficiently update the trained model on-line by partial training on the new data to reduce the model updating time whenever a new special case occurs. The effectiveness of the proposed method is validated on simulation platform for test system with two terminal parallel transmission lines with complex mutual coupling. The test results, considering wide variations in operating conditions of the faulted power network, indicate that the proposed adaptive relay setting provides significant improvement in the relay performance.

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