HomeSmart Grid T&DEnergy EfficiencyESMIG says 'no reason to question smart metering technology'

ESMIG says ‘no reason to question smart metering technology’

ESMIG, the European voice of smart energy solution providers, has rejected the findings of a study conducted by the University of Twente in the Netherlands, which had led to concerns about the accuracy of the devices.

The study focused on electromagnetic interference on static electricity meters and prompted the industry association group to examine the findings and come up with a response.
ESMIG Smart Energy Association
In a statement to Power Engineering International, ESMIG said that it welcomes independent studies
performed in reliable and realistic conditions, believing that they help build a climate of transparency and trust between energy providers, service providers, solution providers, public authorities and citizens. However, the association believes the study was unfair in how it established its findings.

“In this particular case however, ESMIG and its members do not believe that this study meets the criteria of reliability and realism, and we regret that as a result it has created uncertainty and sown doubt among consumers, network operators and regulators.”

“Specifically, we regret that the results of the University of Twente (UT) study do not relate to actual “real world” conditions. The laboratory situation created for the UT study was based on incorrect installation and unrealistic. Such conditions are exceptionally unlikely to occur in normal households, and electromagnetic emission limits under EU regulations were grossly exceeded for the equipment used in this study.”

ESMIG maintained that smart meters supplied by ESMIG members in the European market meet, and often surpass, the requirements of the testing standards under the EU Measuring Instruments Directive (MID), which ensure their accuracy, reliability, durability and safety.

ESMIG concluded their statement by saying that they ‘would like to reassure policy makers, network operators, electricity suppliers and most importantly, European consumers, that the smart metering technology being deployed in Europe is robust, secure and accurate. The measurement accuracy of smart metering is the absolute basis for consumer confidence. There is no reason for any stakeholder to question the benefits of smart metering technology based on the results of the UT study.’

Among the criticisms of the Dutch study by the association include the use of 10A lighting dimmer and a string of 30 non-dimmable CFL (energy saving lamps) and a string of 20 non-dimmable LED lamps.

“This in and of itself is not a real-world scenario that would exist in a consumer’s house. It may occur that one or even a few non-dimmable lamps could be connected to a dimmer by a consumer, but not as in the reported tests with 20,30 or even 50 lamps.”

“Unfortunately, the publications and the communication from UT side leave the impression that these conditions could likely occur in any household when using widely employed and European conformity (CE) marked equipment. This is wrong.”

ESMIG maintained that this combination of non-compatible components creates substantial electromagnetic emissions that far exceed the maximum emission levels permitted by European Directives and related standards. The electromagnetic interference in any case far exceeds anything found in a normal household.”

ESMIG also added that for the disturbances generated in the UT case (with very high emissions in the range under 2 kHz), there is already a solid body of standards and testing procedures which have been in place for quite some time and applicable for all equipment connected to the electricity grid.

“The Smart Meters comply to the EMC immunity levels defined in these standards, while the disturbances generated in the UT case are far beyond the defined emission levels.”

In the statement’s concluding remarks ESMIG reinforced that laboratory conditions used by the University were not real world representations.

“The Smart Meters of our members comply with the most recent requirements for EMC and EMC testing related to the European Directives for Measuring Instruments (MID) and Electro Magnetic Compatibility (EMCD). We work with other industries on improving and maintaining these EMC requirements and will continue to do so.”

“We can confidently sayࢀ¦ à‚ that there is no reason to question smart metering technology.”

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