A new ground impedance measuring element for digital distance relaying of long parallel lines in high fault resistance conditions

2015 ◽  
Vol 26 (7) ◽  
pp. 1376-1396 ◽  
Author(s):  
Hamed Abdollahzadeh ◽  
Babak Mozafari ◽  
Mostafa Jazaeri
Keyword(s):  
Fault Resistance ◽  
Parallel Lines ◽  
Measuring Element ◽  
Distance Relaying

A New Distance Relaying Method with System Load Condition Considered in a Transmission Line

2005 ◽  
Vol 277-279 ◽  
pp. 686-691
Author(s):  
Hyun Kyung Moon ◽  
Seung Ho Hyun ◽  
Sung J. Lee
Keyword(s):  
Transmission Line ◽  
Fault Location ◽  
Load Condition ◽  
Fault Current ◽  
Loop Analysis ◽  
Fault Resistance ◽  
Before And After ◽  
Location Algorithm ◽  
Distance Relaying ◽  
Feed Effect

This paper presents a novel fault location algorithm for a distance relay of a transmission line. Under the assumption that the source voltages and impedances of both ends are not changed before and after a fault, the fault current and the voltage of the terminal end are estimated including the loading condition. Then, the fault location expression, independent of the fault resistance, is derived using these voltages and currents through a loop analysis, in the manner that the in-feed effect of the terminal end is eliminated. The suggested algorithm is applied to a typical transmission line to show its effectiveness.

scholarly journals Transient Monitoring Function based Fault Classifier for Relaying Applications

2018 ◽  
Vol 8 (6) ◽  
pp. 4089
Author(s):  
P. R. Pattanaik ◽  
S. Pati ◽  
S. K. Sanyal
Keyword(s):  
Classification Accuracy ◽  
Fault Classification ◽  
Discrete Wavelet ◽  
Simulation Studies ◽  
Fault Resistance ◽  
Classification Technique ◽  
High Classification Accuracy ◽  
Distance Relaying ◽  
Load Angle ◽  
Transmission Line Protection

<p>This paper proposes Transient monitoring function (TMF) based fault classification approach for transmission line protection. The classifier provides accurate results under various system conditions involving fault resistance, inception angle, location and load angle. The transient component during fault is measured by TMF and appropriate logics applied for fault classification. Simulation studies using MATLAB®/SIMULINK™ are carried out for a 400 kV, 50 Hz power system with variable system conditions. Results show that the proposed classifier has high classification accuracy. The method developed has been compared with a fault classification technique based on Discrete Wavelet Transform (DWT). The proposed technique can be implemented for real time protection schemes employing distance relaying.</p>

Phase Distance Relaying With Fault Resistance Compensation for Unbalanced Systems

2011 ◽  
Vol 26 (2) ◽  
pp. 1282-1283 ◽  
Author(s):  
Rodrigo Hartstein Salim ◽  
Denise Pivatto Marzec ◽  
Arturo Suman Bretas
Keyword(s):  
Fault Resistance ◽  
Distance Relaying
Sign in / Sign up

Export Citation Format

Share Document