DNP3-PROTOCOL

DNP3 SCADA utilities electriques IEEE 1815.

Définition

DNP3 architecture 3 couches : Application Layer (96 different objects), Pseudo-Transport Layer (segmentation), Data Link Layer (CRC-16 frames). Implementations : DNP3 serial (RS-232/485), DNP3 over TCP/IP (port 20000), DNP3 over UDP. Functions : Read, Write, Select, Operate, Direct Operate, Cold Restart, Warm Restart, Time Synchronisation, Class polling. Cybersecurite via Secure Authentication v5 (SAv5) avec X.509 certificates. Adoption : ~70% North America electrical utilities, Australian National Electricity Market, Canadian Hydro.

Origine

DNP3 developpe 1990 par GE Harris (devenu GE Digital) ; standardise IEEE 1815-2010 publie 2010 ; revision IEEE 1815-2012 publie 2012.

Exemple en contexte

Une utility electrique Pacific Gas & Electric Californie supervise 2500 substations via DNP3 over IP ; chaque substation a IED Schweitzer SEL-3530 RTAC qui exporte 50000 measurements.

Termes liés

• IEC 61850 substation — concurrent moderne.