Testing of Electrical Energy Meters Subject to Realistic Distorted Voltages and Currents

Lorenzo Bartolomei, Diego Cavaliere, Alessandro Mingotti, Lorenzo Peretto and Roberto Tinarelli
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Lorenzo Bartolomei: Department of Electric, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy
Diego Cavaliere: Department of Electric, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy
Alessandro Mingotti: Department of Electric, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy
Lorenzo Peretto: Department of Electric, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy
Roberto Tinarelli: Department of Electric, Electronic and Information Engineering, University of Bologna, 40136 Bologna, Italy

Energies, 2020, vol. 13, issue 8, 1-13

Abstract: This paper presents a study on revenue active electrical energy meters. The huge installation along the distribution network of these devices made them a key element for energy billing, but also for monitoring the grid status. Hence, it is evident that the relevance of guaranteeing a trusty metering performance, and consequently a proper standardization, is needed. The operation of the meters is regulated by standards harmonized with the European Directive 2014/32/EU (known as MID). Still, and not infrequently, compliance to some legacy standards is declared on the device specifications. Thus, a brief comparison between the latest standards is presented. In particular, the focus was set on evaluating the potential impact of the harmonic disturbances on the energy meter accuracy, since they are omnipresent in the modern power networks. The evaluation has been carried out on three off-the-shelf class B meters by means of a new test procedure that considers realistic and quasi-realistic harmonic disturbances. Such tests showed that realistic harmonic disturbances affect significantly only some energy meters. Therefore, the standards should not neglect this kind of scenario.

Keywords: energy meters; total harmonic distortion; distorted signals; measurement setup (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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