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Section 6
Establishing connection and verifying the SPA/IEC communication
6.2
Verifying the communication
To verify that the rear communication with the SMS/SCS system is working, there are some different
methods. Choose one of the following.
6.2.1
Verifying SPA communication
Procedure
1.
Use a SPA-emulator and send "RF" to the IED. The answer from the IED should be the type and
version of it, for example, "REL670 2.1...".
2.
Generate one binary event by activating a function, which is configured to an EVENT block where
the used input is set to generate events on SPA. The configuration must be made with the PCM600
software. Verify that the event is presented in the SMS/SCS system.
During the following tests of the different functions in the IED, verify that the events and indications in the
SMS/SCS system are as expected.
6.2.2
Verifying IEC communication
To verify that the IEC communication with the IEC master system is working, there are some different
methods. Choose one of the following.
Procedure
1.
Check that the master system time-out for response from the IED, for example after a setting
change, is > 40 seconds.
2.
Use a protocol analyzer and record the communication between the IED and the IEC master.
Check in the protocol analyzer's log that the IED answers the master messages.
3.
Generate one binary event by activating a function that is configured to an event block where the
used input is set to generate events on IEC. The configuration must be made with the PCM600
software. Verify that the event is presented in the IEC master system.
During the following tests of the different functions in the IED, verify that the events and indications in the
IEC master system are as expected.
6.3
Fiber optic loop
The SPA communication is mainly used for SMS. It can include different numerical IEDs with remote
communication possibilities. The fiber optic loop can contain < 20-30 IEDs depending on requirements
on response time. Connection to a personal computer (PC) can be made directly (if the PC is located in
the substation) or by telephone modem through a telephone network with ITU (CCITT) characteristics.
Table 8:
glass
plastic
44
Max distances between IEDs/nodes
< 1000 m according to optical budget
< 25 m (inside cubicle) according to optical budget
© 2017 - 2022 Hitachi Energy. All rights reserved
1MRK 511 409-UUS Rev. K
M11735-77 v1
M11735-81 v5
M11735-91 v2
Phasor measurement unit RES670
Commissioning manual
M11905-3 v7
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