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seCurity and PrivaCy in smart Grids
1.2.6.2 IEDs, Relays, Meters, Switchgear, CTs, and VTs e second pillar
(see Figure1.8) covers the monitoring and control of IEDs, common
relays, meters, and switchgears as well as CTs and VTs. is large group
of field devices mainly uses communication standardized by the two stan-
dard series IEC 61850 and IEC 60870-5, including their substandards.
1.2.6.2.1 IEC 60870-5 RTUs or Substation Systems e development
of the standard series IEC 60870-5, Telecontrol Equipment and Systems—
Part 5: Transmission Protocols, was started in the 1980s by TC 57 WG 3.
e main objective was to develop an internationally sta ...