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2014 49th International Universities Power Engineering Conference (UPEC), 2014
During saturation, a clipping effect is observed on the secondary side, leading to a false reading of the RMS value of the primary current. The present paper shows some experimental date about the effect of current transformer saturation and validates a method for reevaluating sampled data related to inrush currents.
Razvan-Andrei Radu +3 more
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During saturation, a clipping effect is observed on the secondary side, leading to a false reading of the RMS value of the primary current. The present paper shows some experimental date about the effect of current transformer saturation and validates a method for reevaluating sampled data related to inrush currents.
Razvan-Andrei Radu +3 more
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Measurement Errors for Electromagnetic Current Meters
1989The Nearshore Sediment Transport Study (NSTS) field experiments relied on Marsh-McBirney electromagnetic current meters to provide estimates of currents in the surf zone, for modeling of both hydrodynamics and sediment transport. These meters were chosen because of their history of successful use in previous surf zone studies, relying on their ...
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Numerical errors of the real time dynamic correction for the current measurement
Computer Standards & Interfaces, 1999Abstract The finite precision of arithmetic operations performed by a processor is the source of numerical errors. An algorithm of the dynamic error correction has been tested with respect to the numerical errors. A truncation operation of any bit number representation has been simulated.
Jerzy Nabielec, Adam Morończyk
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The errors associated with high resistances in alternating current measurements
Journal of Scientific Instruments, 1928(1) Some of the properties of a resistance which is shielded at a known potential have been investigated. (2) The effect of adding a number of these units in series, to form a high voltage resistor, has been considered, and expressions for the phase angle at the low and high voltage ends of the resistor have been derived.
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Method for online measurement of optical current transformer onsite errors
Measurement Science and Technology, 2016This paper describes a method for the online measurement of an optical current transformer (OCT) onsite errors comparing with a conventional electromagnetic current transformer (CT) as the reference transformer. The OCT under measurement is connected in series with the reference electromagnetic CT in the same line bay.
Shuangshuang Zhao +4 more
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Transverse diffusion currents as an important source of error in magnetoresistance measurements
Journal of Physics C: Solid State Physics, 1978The consequences of the magnetoconcentration effect on the longitudinal current in semiconductor slabs are investigated over a wide range of magnetic field B. It is shown that the current component resulting from the action of the Lorentz force on the transverse diffusion currents is comparable to the conduction component in Ge and especially InSb ...
null S Cristoloveanu, null A Chovet
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A Novel Error-Injected Solution for Compensation of Current Measurement Errors in PMSM Drive
IEEE Transactions on Industrial Electronics, 2023Qiaofen Zhang +6 more
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Near-Transducer Errors in Acoustic Doppler Current Profiler Measurements
World Environmental and Water Resource Congress 2006, 2006Previous studies have shown that velocities measured near the Acoustic Doppler Current Profiler (ADCP) transducers are biased low. The error was associated with two causes: acoustic ringing and the flow disturbance created by the submerged part of the ADCP in its vicinity.
M. Muste +4 more
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Influence of current measurement errors on parallel-connected UPS inverters
2009 IEEE Intrumentation and Measurement Technology Conference, 2009Redundancy is a common approach for ensuring reliability on applications using UPS inverters. However, overall system's reliability and efficiency is very dependent on the power measurement precision, which if not properly done can lead to system failure.
Ivan Muller +4 more
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Prediction model of measurement errors in current transformers based on deep learning
Review of Scientific InstrumentsThe long-term monitoring stability of electronic current transformers is crucial for accurately obtaining the current signal of the power grid. However, it is difficult to accurately distinguish between the fluctuation of non-stationary random signals on the primary side of the power grid and the gradual error of the transformers themselves.
Zhen-hua Li +5 more
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