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Standardization in the field of Current and Voltage measurements

pubblicazioni - Memoria

Standardization in the field of Current and Voltage measurements

L’articolo è volto a presentare la nuova serie di Norme IEC e CENELEC 61869-X sui trasformatori di misura e l’attività preparatoria per indirizzare le attività normative dei Technical Committees 38 IEC e CENELEC nel corso del prossimo decennio.

The subject addressed is the standardization for the current and voltage measurements in electrical networks by IEC and CENELEC organizations.

The former IEC Series 60044-X is now replaced for conventional type of instrument transformers by the new Series IEC 61869-X. Concerning new technologies using mostly optical Faraday and Pockels effects, or passive sensors using low power current sensors, Rogowski sensors or R/C divider, the standardization work is in progress. This standardization work includes the definition of digital interface according to IEC 61850-9- 2. This work is based on the classical specifications required by the low voltage equipment connected to instrument transformers. However new applications driven by smart grid developments will probably change the requirements of current and voltage measurement devices.

To address these new developments, IEC TC 38 launches New Work Items for the standardization of Fault Passage Indicators (FPI). These devices will be standardized in the future Series IEC 62689-X. In parallel, IEC TC38 circulates a large survey in order to determine the futures requirements of Instrument transformer for the different uses.

This paper will present the state of development of these two Series of IEC Standards and the main conclusions of the survey that will drive the IEC and CENELEC TC 38 standardization works for the next decade.

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