The study of Spread Spectrum Time Domain Reflectometry for cable fault detection and location on-line

2011 ◽  
Author(s):  
Chen Wei ◽  
Wang Li
Keyword(s):  
Fault Detection ◽  
Time Domain ◽  
Spread Spectrum ◽  
Time Domain Reflectometry ◽  
On Line

Spread Spectrum Time Domain Reflectrometry Applied to Electrical Systems in Nuclear Power Plants

2010 ◽  
Author(s):  
Gary M. Sandquist ◽  
Carl J. Sandquist
Keyword(s):  
Time Domain ◽  
Integrated Circuit ◽  
Spread Spectrum ◽  
Power Plants ◽  
Short Circuit ◽  
Time Domain Reflectometry ◽  
Nuclear Plant ◽  
Current Time ◽  
Electrical Systems ◽  
On Line

A recently developed technique “Spread Spectrum Time Domain Reflectometry” (SSTDR), and supporting test devices will be adapted and tested to monitor and diagnose nuclear plant electrical systems. Current time domain reflectometry methods cannot detect or locate small faults after arc fault events, because their impedance discontinuity is too small and transient to create a measurable reflection. However, on-line, unobtrusive SSTDR can detect and locate arc and other electrical faults when the (∼msec) short circuit returns a strong reflected signal. These observations have led to development of SSTDR. If SSTDR can be successfully adapted to present and future nuclear plant electrical systems, it will be possible to monitor, on-line, the integrity of the electrical system continuously and with only minor equipment modification and no consequential safety issues. An integrated circuit (IC) is under development at the University of Utah for applications in the aircraft industry that will be adapted and used for this proposed development.

scholarly journals SPREAD SPECTRUM TIME DOMAIN REFLECTOMETRY (SSTDR) DIGITAL TWIN SIMULATION OF PHOTOVOLTAIC SYSTEMS FOR FAULT DETECTION AND LOCATION

2021 ◽  
Vol 94 ◽  
pp. 105-126
Author(s):  
Samuel R. Kingston ◽  
Cody La Flamme ◽  
Mashad Uddin Saleh ◽  
Hunter Ellis ◽  
Evan Benoit ◽  
...  
Keyword(s):  
Fault Detection ◽  
Time Domain ◽  
Spread Spectrum ◽  
Time Domain Reflectometry ◽  
Photovoltaic Systems ◽  
Digital Twin

Postprocessing for Improved Accuracy and Resolution of Spread Spectrum Time-Domain Reflectometry

2019 ◽  
Vol 3 (6) ◽  
pp. 1-4 ◽  
Author(s):  
Naveen Kumar Tumkur Jayakumar ◽  
Evan Benoit ◽  
Samuel Kingston ◽  
Mashad Uddin Saleh ◽  
Michael Scarpulla ◽  
...  
Keyword(s):  
Time Domain ◽  
Spread Spectrum ◽  
Time Domain Reflectometry ◽  
Improved Accuracy
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