FEM analysis of single-phase electromechanical meter at non-sinusoidal power supply

Jakovljević, Bojan; Hederić, Željko; Barešić, Dejan; Cvetković, Nenad

doi:10.1109/siela.2016.7543015

Cited by 2 publications

(2 citation statements)

References 2 publications

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“…The principle of operation of Electromechanical Induction Meter has been widely described in the literature [1], [3], [4]. This analogue meter uses Ferraris' principle to produce torque in a free to rotate disk exposed to two 90 degreesshifted alternating magnetic fluxes.…”

Section: A Electromechanical Electricity Metermentioning

confidence: 99%

A review of electrical metering accuracy standards in the context of dynamic power quality conditions of the grid

Cetina

Roscoe

Wright

2017

2017 52nd International Universities Power Engineering Conference (UPEC)

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Numerous changes in electrical grid schemes, like the inclusion of renewable energy, the rise of non-linear loads and the emergence of electric vehicle charging, increases variable power quality conditions of the grid. In this dynamic scenario where energy could flow in both directions and the waveforms could be highly distorted, accuracy becomes a crucial factor for the correct measurement of electrical energy and power values. Errors in the assessment of these values have significant ramifications for revenue, billing and/or control. This non-ideal power quality scenario produces an error in electricity meters, that is not yet well known since there is no standardised procedure to calibrate meters under typical or emerging distorted waveform conditions. Current standards relevant for revenue energy meters like EN 50470-3:2006 allows measurements error up to ±2.5% while local regulations could be even more permissive. In order to establish an electricity fair trade market and meet expectations from consumers and utilities, electricity meters should arguably comply with higher accuracy standards. In this paper, the pertinence and possible impact of including tests under distorted waveform conditions, as well as new accuracy requirements on standards applicable to electricity meters for billing purposes will be discussed.

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Section: A Electromechanical Electricity Metermentioning

confidence: 99%

A review of electrical metering accuracy standards in the context of dynamic power quality conditions of the grid

Cetina

Roscoe

Wright

2017

2017 52nd International Universities Power Engineering Conference (UPEC)

View full text Add to dashboard Cite

show abstract

“…Experimental-based studies have been conducted in order to analyse the effects of non-sinusoidal waveforms on different electricity meters [6]; however, most of these studies are focused only in harmonic contents produced by non-linear loads or injected to the load using a programmable Power Source. Although many authors have proposed procedures and methods to calibrate meters under distorted waveforms, the tests and the test conditions differs widely from one to another.…”

Section: Introductionmentioning

confidence: 99%

Challenges for Smart Electricity Meters due to Dynamic Power Quality Conditions of the Grid: A Review

Cetina

Roscoe

Wright

2017

2017 IEEE International Workshop on Applied Measurements for Power Systems (AMPS)

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Abstract-During the last few years, Smart Electricity Meters have been deployed in several countries all around the world, replacing the trustable Electromechanical meter and even other electronic meters. Since the early deployments, many concerns and complaints from customers which do not trust Smart Meters accuracy have appeared. As a result, researchers of different institutions have been testing electricity meters under distorted waveform conditions and proposing methods to calibrate such meters in a more representative real world operative conditions. Applicable accuracy standards and regulations indicate a maximum distortion factor of 3% of the sinusoidal waveform for voltage and current during the calibration, which is not representative of many modern dynamic power quality scenarios. New tests and recommendations have been issued by regulatory bodies, but they are still not mandatory for meters to be certified. With many changes upcoming in the near future for the electrical Smart Grid like the inclusion of renewables, increasing non-linear loads, electric charging vehicles and other emerging technologies, the power quality conditions of the grid is expected to be significantly affected. In this paper, a review of the current and upcoming challenges for the smart meters is presented.

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FEM analysis of single-phase electromechanical meter at non-sinusoidal power supply

Cited by 2 publications

References 2 publications

A review of electrical metering accuracy standards in the context of dynamic power quality conditions of the grid

A review of electrical metering accuracy standards in the context of dynamic power quality conditions of the grid

Challenges for Smart Electricity Meters due to Dynamic Power Quality Conditions of the Grid: A Review

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