Do EMC disturbances affect Smart Meters?
Many studies have already been performed on Electro Magnetic Compatibility (EMC) disturbances and have our constant attention. The metering industry is continuously checking the occurrence of new phenomena to understand if the current EMC rules defined and applied in Europe are still sufficient. A recent study conducted by the University of Twente (Netherlands) regarding electromagnetic interference on static electricity meters has recently gotten a worldwide attention and led us to look in detail at its findings. ESMIG welcomes independent studies performed in reliable and realistic conditions, because we believe that they help build a climate of transparency and trust between energy providers, service providers, solution providers, public authorities and citizens.
The University of Twente tests on Static Energy Meters included tests using a 10A lighting dimmer and a string of 30 non-dimmable CFL (energy saving lamps) and a string of 20 non-dimmable LED lamps. 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.
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 would like to reassure 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.