scholarly journals Modeling Protection Systems in Time-Domain Simulations: A New Method to Detect Mis-Operating Relays for Unstable Power Swings

2017 ◽  
Vol 32 (4) ◽  
pp. 2790-2798 ◽  
Author(s):  
Mojdeh Abdi-Khorsand ◽  
Vijay Vittal
Keyword(s):  
Time Domain ◽  
New Method ◽  
Protection Systems ◽  
Power Swings

A new method for the detection of protection faults in capability-based protection systems

CALCOLO ◽  
1979 ◽  
Vol 16 (2) ◽  
pp. 143-156
Author(s):  
S. Antonelli ◽  
G. Iazeolla
Keyword(s):  
New Method ◽  
Protection Systems

A new method for the generation of representative time-domain turbulence excitations

2015 ◽  
Vol 58 ◽  
pp. 1-19 ◽  
Author(s):  
Jose Antunes ◽  
Philippe Piteau ◽  
Xavier Delaune ◽  
Laurent Borsoi
Keyword(s):  
Time Domain ◽  
New Method

Quantitative, zerstörungsfreie Feuchtemessung in Baustoffen vor Ort mit der Time Domain Reflectometry / Quantitative, non-destructive moisture measurement in building materials on site by time-domain re ectometry

1999 ◽  
Vol 5 (6) ◽  
pp. 609-618
Author(s):  
M. Stacheder ◽  
G. Grassegger ◽  
F. Grüner
Keyword(s):  
Time Domain ◽  
Building Materials ◽  
Salt Content ◽  
Time Domain Reflectometry ◽  
New Method ◽  
Measuring Methods ◽  
Surface Moisture ◽  
Non Destructive ◽  
Floor Cover

Abstract A new commercially available dielectric technique for the non-destructive determination of moisture in building materials based on the principle of 'time-domain reflectometry' (TDR) is presented. TDR measurements on samples of sandstone, brick, concrete and floor cover matched very well with results of conventional moisture measuring methods such as oven-drying or calciumcarbide-technique. The new method showed only a low influence of salt content or surface moisture of the material on the results.

scholarly journals Active Power Measurement Based on Multiwavelet Transforms

2014 ◽  
Vol 2014 ◽  
pp. 1-6
Author(s):  
Xiao-Bing Zhang ◽  
Yun-Hui Li ◽  
Xiao-Meng Cui
Keyword(s):  
Time Domain ◽  
Fourier Transforms ◽  
Active Power ◽  
New Method ◽  
Power Measurement ◽  
The Time Domain ◽  
Better Than

This paper discusses a new method for calculating active power in the multiwavelet domain. When the voltage and current waveforms are analyzed using multiwavelet, the active power can be calculated by simply adding the products of the multiwavelet coefficients without having to reconstruct the signals back to the time domain first and then using the traditional integration. From the simulation result, we can see that the results using multiwavelet are better than the ones using wavelet and Fourier Transforms no matter which prefilter is used.

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