scholarly journals Fast Identification of Short Circuit Fault Based on Average Curvature of Current Waveform

2018 ◽  
Author(s):  
Shaogui Ai ◽  
Xiuming Hu ◽  
Yongning Huang ◽  
Hui Ni ◽  
Zhiguo Hao
Keyword(s):  
Short Circuit ◽  
Current Waveform ◽  
Fast Identification ◽  
Average Curvature ◽  
Short Circuit Fault

Identification of Lightning Strikes on Transmission Lines Based on Integral Method and Wavelet Analysis

2014 ◽  
Vol 936 ◽  
pp. 2190-2195
Author(s):  
Hong Wei Yan ◽  
Yong Li Zhu ◽  
Guo Chen Fan ◽  
Xi Xiong
Keyword(s):  
Transmission Lines ◽  
Short Circuit ◽  
Transient Current ◽  
Scale Transformation ◽  
Current Waveform ◽  
Lightning Strikes ◽  
Multi Scale ◽  
Measuring Devices ◽  
The Time Domain ◽  
Short Circuit Fault

Transient signals caused by lightning strikes on transmission lines may interfere with the distance measuring devices relying on traveling wave. A synthesized method based on the additional components of disturbed current is proposed to distinguish between lightning interference, lightning fault and short-circuit fault. Firstly, since the disturbed current waveform generated by lightning interference and faults are distinct in the time domain, transient current components over and below timeline are respectively integrated to identify lightning interference from faults. And then, due to the distribution differences of current in the frequency domain, multi-scale transformation of wavelet is adopted to analyze the energy spectrum of transient current generated by short-circuit fault and faults of lightning. Numerous PSCAD simulation results demonstrate the proposed method is valid and correct.

Recognition of Failed Wires during a Short-Circuit Fault in a Multiwire Network

2019 ◽  
Vol 9 ◽  
pp. 22-29
Author(s):  
Yury Ya. LYAMETS ◽  
◽  
Mikhail V. MARTYNOV ◽  
Alexander N. MASLOV ◽  
◽  
...  
Keyword(s):  
Short Circuit ◽  
Short Circuit Fault

Short-Circuit Fault Location Interval Recognition Criteria in Electrical System

2019 ◽  
Vol 11 ◽  
pp. 33-39
Author(s):  
Yury Ya. LYAMETS ◽  
◽  
Mikhail V. MARTYNOV ◽  
Alexander N. MASLOV ◽  
◽  
...  
Keyword(s):  
Fault Location ◽  
Short Circuit ◽  
Electrical System ◽  
Short Circuit Fault

Calculation of Short-Circuit Fault Currents in an Electric Traction Network with Double Ended Power Supply

2019 ◽  
Vol 5 (5) ◽  
pp. 19-23
Author(s):  
Leonid A. GERMAN ◽  
◽  
Alexandr S. SEREBRYAKOV ◽  
Aleksey B. LOSKUTOV ◽  
Vladimir L. OSOKIN ◽  
...  
Keyword(s):  
Power Supply ◽  
Short Circuit ◽  
Fault Currents ◽  
Traction Network ◽  
Electric Traction ◽  
Short Circuit Fault
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