Real-Time Digital Compensation of Current Transformers Over a Wide Frequency Range

2010 ◽  
Vol 59 (5) ◽  
pp. 1119-1126 ◽  
Author(s):  
D. Gallo ◽  
C. Landi ◽  
M. Luiso
Keyword(s):  
Real Time ◽  
Wide Frequency Range ◽  
Frequency Range ◽  
Current Transformers ◽  
Digital Compensation

Simulation of Real-Time Frequency Estimators for Pulsed Doppler Systems

1986 ◽  
Vol 8 (4) ◽  
pp. 252-271 ◽  
Author(s):  
G.H. van Leeuwen ◽  
A.P.G. Hoeks ◽  
R.S. Reneman
Keyword(s):  
Real Time ◽  
Instantaneous Frequency ◽  
Wide Frequency Range ◽  
Frequency Range ◽  
Zero Crossings ◽  
Time Frequency ◽  
Doppler Signals ◽  
Extended Frequency Range ◽  
Extended Frequency ◽  
Frequency Detector

Four time-domain oriented, real-time frequency estimators, based on the detection of phase, zero-crossings, instantaneous frequency or autocorrelation, were simulated on a digital computer and subjected to computer generated Doppler signals, enabling the investigation of the influence of spectral shape, filtering, frequency shift, noise and quantization. Three estimators, the autocorrelator as well as the instantaneous frequency detector and the autocorrelator, both with extended frequency range, appeared to be very accurate. They exhibit a bias in the estimator output of less than 2 percent over a wide frequency range, the former up to nearly the Nyquist frequency, the latter two beyond, even for skew spectra and under poor signal conditions regarding bandwidth and noise.

scholarly journals FPGA-based real time compensation method for medium voltage transducers

ACTA IMEKO ◽  
2015 ◽  
Vol 4 (1) ◽  
pp. 82 ◽  
Author(s):  
Gabriella Crotti ◽  
Daniele Gallo ◽  
Domenico Giordano ◽  
Carmine Landi ◽  
Mario Luiso
Keyword(s):  
Real Time ◽  
Power Quality ◽  
Wide Frequency Range ◽  
Compensation Method ◽  
Frequency Bandwidth ◽  
Frequency Range ◽  
Distributed Power ◽  
Medium Voltage

Since the increase of the distributed power connected to the medium voltage networks, a capillary monitoring of the power quality becomes essential. This entails the spread of transducers with suitable frequency bandwidths, as required by the relevant standards. The paper describes a real time compensation method for the extension of the frequency bandwidth of medium voltage dividers whose performances do not allow to perform measurements over a wide frequency range. This approach will contribute to keep the costs of this innovation low.

Installation for testing electronic voltmeters over a wide frequency range

1976 ◽  
Vol 19 (10) ◽  
pp. 1525-1526
Author(s):  
A. M. Fedorov ◽  
V. V. Krestovskii ◽  
V. S. Kiselev ◽  
S. A. Razumovskii ◽  
V. A. Shcheglov
Keyword(s):  
Wide Frequency Range ◽  
Frequency Range
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