High-Accuracy Methods and Measurement Procedures for Power Quality Parameters Using the Digital Synchronous Sampling Technique

Iuzzolino, Ricardo; Ihlenfeld, W. G. Kurten

doi:10.1109/tim.2007.890625

Cited by 20 publications

(8 citation statements)

References 2 publications

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“…Although many authors are concerned with the measurement of active, apparent and non-active power including reactive power (see [ 9 , 10 , 11 , 12 ]) even of distorted alternating currents and voltages (see [ 13 , 14 , 15 , 16 , 17 , 18 , 19 , 20 , 21 , 22 , 23 , 24 ]), there is no literature on the evaluation of uncertainty in power measurement with harmonics or with a phase-fired current waveform as required by standard [ 3 ]. The evaluation of uncertainty due to synchronous sampling of digital multimeters has been discussed in depth in [ 13 , 14 ], but no study has been found in the literature on the sensitivity of power measurements to certain processing parameters, such as the integration of the signals at a time other than the full period, nor the influence of the synchronization errors between the two DMMs on the power measurement, nor the method of signal integration.…”

Section: Introductionmentioning

confidence: 99%

Calibration of On-Board Energy Measurement Systems Installed in Locomotives for AC Distorted Current and High Voltage Waveforms and Determination of Its Uncertainty Budget

Khamlichi

Garnacho

Simón

et al. 2021

Sensors

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Periodic calibrations of Energy Measurement Systems (EMS) installed in locomotives must be carried out to demonstrate the required accuracy established in the EN 50463-2 standard according to European Parliament and Council Directive 2008/57/EC on the interoperability of rail systems within the Community. As a result of the work performed in the “MyRailS” EURAMET project an AC calibration facility was developed consisting of a fictive power source was developed. This fictive power source can generate distorted sinusoidal voltages up to 25 kV-50 Hz and 15 kV-16.7 Hz as well as distorted sinusoidal currents up to 500 A with harmonic content up to 5 kHz or phase-fired current waveform stated in EN50463-2 standard. These waveforms are representative of those that appear during periods of acceleration and breaking of the train. Reference measuring systems have been designed and built consisting of high voltage and high current transducers adapted to multimeters, which function as digital recorders to acquire synchronized voltage and current signals. An approved procedure has been developed and an in-depth uncertainty analysis has been performed to achieve a set of uncertainty formulas considering the influence parameters. Different influence parameters have been analyzed to evaluate uncertainty contributions for each quantity to be measured: rms voltage, rms current, active power, apparent power and non-active power of distorted voltage and current waveforms. The resulting calculated global expanded uncertainty for the developed Energy Measuring Function calibration set up has been better than 0.5% for distorted waveforms. This paper is focused on presenting the complete set of expressions and formulas developed for the different influence parameters, necessary for uncertainty budget calculation of an Energy Measuring Function calibration.

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Section: Introductionmentioning

confidence: 99%

Calibration of On-Board Energy Measurement Systems Installed in Locomotives for AC Distorted Current and High Voltage Waveforms and Determination of Its Uncertainty Budget

Khamlichi

Garnacho

Simón

et al. 2021

Sensors

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“…However, in general, only part of the states of neurons is useful, especially for large-scale neural networks. Nowadays, more and more attentions have been paid to sample and measure states of neurons, and a lot of researches have been done on this issue [6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

Master-slave synchronization of neural networks with time-varying delays via the event-triggered control

Zhou

Tong

Chen

et al. 2020

Mathematical and Computer Modelling of Dynamical Systems

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This paper investigates the problem of master-slave synchronization of neural networks with time-varying delays via the event-triggered control (ETC). First, the proposed ETC can effectively reduce the total amount of data transmitted to the controller in the synchronization process and avoid communication channel congestion. Second, a master-slave synchronization of neural networks with time-varying delays is constructed, where delays within neural networks and the ETC are simultaneous existence. The controller is updated by the ETC. By the Lyapunov stability theory, some sufficient criteria are obtained to ensure master-slave synchronization of neural networks. Finally, a numerical example and a tunnel diode circuit example are used to verify the validity of results obtained.

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“…Traditional measuring methods based on thermal converters only provide information about the root mean square value of the measured signal and are not suitable for the task, so alternative measurement techniques are required. At the reference level, a few national metrology institutes (NMIs) have developed metrology grade power and PQ measurement systems based on digital sampling techniques [2][3][4][5][6][7][8]. These measurement systems are complex and the resources required to design, build and validate them challenges even larger NMIs.…”

Section: Introductionmentioning

confidence: 99%

EMPIR project TracePQM: Traceability routes for electrical power quality measurements

Zachovalova

Yovcheva²,

Aguilar

et al. 2017

18th International Congress of Metrology

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Increasing demand for traceable, accurate measurements of power and power quality (PQ) parameters has resulted in an intensive metrology research effort in this area. This paper describes the objectives and activities of EMPIR project 15RPT04 TracePQM, jointly funded by the European Union and the participating countries. The overall goal of this project is to develop and validate a modular, well documented metrology grade system for the measurement of power and PQ parameters using digital sampling techniques. The first results of the research project, including the description of the system design, the software structure, results of the stability tests on wideband digitizers, and the acquisition of extended waveform records using a digitizing multimeter are presented.

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High-Accuracy Methods and Measurement Procedures for Power Quality Parameters Using the Digital Synchronous Sampling Technique

Cited by 20 publications

References 2 publications

Calibration of On-Board Energy Measurement Systems Installed in Locomotives for AC Distorted Current and High Voltage Waveforms and Determination of Its Uncertainty Budget

Calibration of On-Board Energy Measurement Systems Installed in Locomotives for AC Distorted Current and High Voltage Waveforms and Determination of Its Uncertainty Budget

Master-slave synchronization of neural networks with time-varying delays via the event-triggered control

EMPIR project TracePQM: Traceability routes for electrical power quality measurements

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