The CEI (Comitato Elettrotecnico Italiano) has published in December 2011 a norm that strongly proposes to use IEC 61850 to connect PV inverters (>1kV and >6 kW) to external systems (grid operator, …):
CEI 0-21 “Regola tecnica di riferimento per la connessione di Utenti attivi e passivi alle reti BT delle imprese distributrici di energia elettrica”.
“Reference technical rules for the connection of active and passive users to
the LV electrical Utilities”
Click HERE for the press release and link to the norm provided by CEI [pdf, Italian].
Click HERE for a up-to-date presentation presenting the background and needs for … and for standard communications in low voltage (LV) power systems.
The document IEC 61850-90-7 “IEC 61850 object models for inverters in distributed energy resources (DER) systems” is about to published in a few months. This document is a perfect fit for the needs of PV inverters.
IEC TC 57 WG 17 has met in San Diego (CA) last week. The final draft paper is expected to be available in a few weeks.
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