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1MRK 511 418-UEN A
Section 2
2.1
2.1.1
650 series 2.2 IEC
Communication protocol manual
SPA application
SPA communication protocol
Application
SPA communication protocol is an alternative to IEC 60870-5-103, and they use
the same rear communication port.
When communicating with a PC connected to the utility substation LAN via WAN
and the utility office LAN (see Figure 2), and when using the rear optical Ethernet
port, the only hardware required for a station monitoring system is:
•
Optical fibres from the IED to the utility substation LAN
•
PC connected to the utility office LAN
Utility LAN
Remote
monitoring
IEC05000715 V4 EN-US
Figure 2:
SPA communication structure for a remote monitoring system via a
substation LAN, WAN and utility LAN
SPA communication is mainly used for the Station Monitoring System. It can
include different IEDs with remote communication possibilities. Connection to a
PC can be made directly (if the PC is located in the substation), via a telephone
modem through a telephone network with ITU (former CCITT) characteristics or
via a LAN/WAN connection.
glass
<1000 m according to optical budget
plastic
<25 m (inside cubicle) according to optical budget
SPA application
WAN
IED
IED
Section 2
IP14614-1 v1
IP14785-1 v1
SEMOD115767-5 v6
Substation LAN
IED
IEC05000715-4-en.vsd
11
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