Measuring accuracy of distance protection with particular reference to earth-fault conditions on 400kv looped-circuit interconnections

1970 ◽  
Vol 117 (2) ◽  
pp. 431
Author(s):  
W.D. Humpage ◽  
M.S. Kandil
Keyword(s):  
Distance Protection ◽  
Earth Fault ◽  
Measuring Accuracy

Earth fault distance protection

2009 ◽  
Author(s):  
G. Achleitner ◽  
L. Fickert ◽  
C. Obkircher ◽  
M. Sakulin
Keyword(s):  
Distance Protection ◽  
Earth Fault

Study on a New Earth-Fault Distance Protection for Four-Circuit Transmission Lines on the same Tower

2013 ◽  
Vol 706-708 ◽  
pp. 1574-1579
Author(s):  
Pei Yu Guo ◽  
Zhon Gan Yu ◽  
Neng Ling Tai ◽  
Chun Ju Fan
Keyword(s):  
Transmission Lines ◽  
High Sensitivity ◽  
Distance Protection ◽  
Parallel Transmission ◽  
Earth Fault ◽  
Sequence Components ◽  
Components Method ◽  
The Relationship ◽  
Complex Transmission ◽  
High Voltage System

Since the transmission corridors are becoming more and more valuable and the demand for transmission capacity is continually increasing, the four-circuit transmission lines on the same tower have been used more and more in the high-voltage system. For this complex transmission system, there is an unpredictable mutual inductance error when measures the impedance, which will potentially cause the mal-operation of relay. Therefore, it is not feasible to use the traditional earth-fault distance protection in case of the single phase to earth fault. In this paper, twelve-sequence components method is introduced to decouple mutual electromagnetic effect between four-parallel transmission lines. Based on the analysis of the features of each component, the relationship between fault voltage and the current is presented. Furthermore, a new protection criterion for earth-fault distance protection is proposed. The new method has high sensitivity and reliability under different scenarios.

scholarly journals Traveling Wave-Based Transmission Line Earth Fault Distance Protection

2020 ◽  
pp. 1-1
Author(s):  
Rafael Lucas Franca ◽  
Francisco Silva junior ◽  
Tiago Honorato ◽  
Joao Paulo Ribeiro ◽  
Flavio Costa ◽  
...  
Keyword(s):  
Transmission Line ◽  
Traveling Wave ◽  
Distance Protection ◽  
Earth Fault
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