0000000000054071

AUTHOR

Di Cara D.

showing 3 related works from this author

Metrological performances of voltage and current instrument transformers in harmonics measurements

2018

In the new electrical system scenario, the increasing presence of non-linear loads and renewable energy sources makes the measurement of harmonics an essential task. The accuracy of harmonic measurement firstly depends on the used instrument transformers for voltage and current sensing. Since the behavior of instrument transformers in non-sinusoidal conditions is not always well defined, this paper presents an experimental study on the metrological performances of current and voltage instrument transformers (CTs and VTs) in the presence of harmonics. Proper tests procedures are defined and measurement setups are developed for both CTs and VTs calibration. The analysis is carried out by usin…

instrument transformers020209 energy02 engineering and technologyInstrument TransformerHarmonic analysispower system meaurementsPhase AngleDistortionharmonics0202 electrical engineering electronic engineering information engineeringCalibrationElectronic engineeringMedicineSafety Risk Reliability and QualityInstrumentationbusiness.industry020208 electrical & electronic engineeringHarmonicPower System MeasurementcalibrationCurrent transformerMetrologyHarmonicsHarmonicbusinessSettore ING-INF/07 - Misure Elettriche E ElettronicheVoltage
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Measurement issues on harmonic analysis according to the IEC 61000-4-7

2022

The objective of this article is an analysis of measurement issues related to the implementation of digital signal processing techniques for harmonic analysis, by means of FFT algorithm with different interpolation algorithms (linear, quadratic and cubic) and different sampling rates. A comparative analysis is made on errors on harmonics measurement obtained in the various case study analyses. Such errors are compared with the IEC 61000-4-7 limits. The study is supported by both simulation and experimental tests; these last are performed with different acquisition boards for signals acquisition.

Harmonic analysisIEC 61000-4-7power qualitypower system measurementsSettore ING-INF/07 - Misure Elettriche E Elettroniche
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A single-point approach based on nonactive power factor for the assessment of harmonic distortion sources in power systems

2022

This paper presents a study on the use of power factor indicators for the assessment of harmonic distortion sources in power systems. In detail the analysis is focused on the comparison between the proposed nonactive power factor (Q1/N) and the indicators of the IEEE Std. 1459-2010, and on the indicators feasibility in identifying the presence of harmonic distortion sources. As discussed in the paper, the proposed indicator can be evaluated with good accuracy, by means of typical power quantities measurements at the point of common coupling (PCC). Thus its measurement can be feasibly implemented in commercial platforms used for smart metering applications. To verify the proposal validity, s…

IEEE 1459-2010Power QualityPower Ratio QuantitiesSettore ING-INF/07 - Misure Elettriche E Elettroniche2022 IEEE International Instrumentation and Measurement Technology Conference (I2MTC)
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