scholarly journals Analysis of power system faults in EHVAC line for varying fault time instances using wavelet transforms

2017 ◽  
Vol 4 (1) ◽  
pp. 107-112 ◽  
Author(s):  
Swetha A. ◽  
P. Krishna Murthy
Keyword(s):  
Power System ◽  
Wavelet Transforms ◽  
Power System Faults

Fuzzified time-frequency method for identification and localization of power system faults

2021 ◽  
pp. 1-13
Author(s):  
Pullabhatla Srikanth ◽  
Chiranjib Koley
Keyword(s):  
Power System ◽  
High Accuracy ◽  
Fuzzy Decision ◽  
Frequency Method ◽  
Time Frequency ◽  
Novel Approach ◽  
S Transform ◽  
Different Types ◽  
Power System Faults ◽  
Frequency Magnitude

In this work, different types of power system faults at various distances have been identified using a novel approach based on Discrete S-Transform clubbed with a Fuzzy decision box. The area under the maximum values of the dilated Gaussian windows in the time-frequency domain has been used as the critical input values to the fuzzy machine. In this work, IEEE-9 and IEEE-14 bus systems have been considered as the test systems for validating the proposed methodology for identification and localization of Power System Faults. The proposed algorithm can identify different power system faults like Asymmetrical Phase Faults, Asymmetrical Ground Faults, and Symmetrical Phase faults, occurring at 20% to 80% of the transmission line. The study reveals that the variation in distance and type of fault creates a change in time-frequency magnitude in a unique pattern. The method can identify and locate the faulted bus with high accuracy in comparison to SVM.

An improved averaged value model of MMC-HVDC for power system faults simulation

2019 ◽  
Vol 110 ◽  
pp. 223-231 ◽  
Author(s):  
Guobing Song ◽  
Ting Wang ◽  
Xinghua Huang ◽  
Chenhao Zhang
Keyword(s):  
Power System ◽  
Power System Faults ◽  
Value Model

Power system faults to ground: Part II: Fault resistance

1937 ◽  
Vol 56 (4) ◽  
pp. 428-433 ◽  
Author(s):  
C. L. Gilkeson ◽  
P. A. Jeanne ◽  
E. F. Vaage
Keyword(s):  
Power System ◽  
Fault Resistance ◽  
Power System Faults ◽  
Ground Part
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