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REX615 IEC 61850 Engineering Guide

This chapter gives a checklist of items to check and confirm during the engineering phase. The complete test specification depends on the network topology and used system components.

Note: Check the configuration and settings with real system load and topology.
Note: In the Measurement view of the SMV receiver, the voltage values in brackets indicate an invalid or a questionable measurement.
Table 1. SMV sender
Item Description Checked
Missing sender Disable the SMV sender via Configuration > Communication > Ethernet > SMVSENDER and verify the expected handling in receivers. In the SMV receivers's Measurement view, the voltage values should be in brackets indicating invalid or questionable measurement. If The SMVSENDER is disabled from the LHMI, it can only be enabled from the LHMI. Thus, in this situation a configuration write from PCM600 does not enable the SMVSENDER.
Internal fault test Force internal fault in the sender via Tests > IED test and check that the receiving devices behave as expected.

SMV receiver monitored data is available in three locations.

  • Monitoring > I/O status > Analog inputs
  • Monitoring > IED status > SMV traffic
  • Monitoring > IED status > SMV accuracy
Table 2. SMV receiver
Item Description Checked
WARNING WARNING ( Monitoring > I/O status > Analog inputs > Voltage(3U,VT)) works as specified in the Application Configuration tool. Necessary special handling considered in the Application Configuration tool logics. WARNING is active when the IED starts.
ALARM ALARM ( Monitoring > I/O status > Analog inputs > Voltage(3U,VT)) works as specified in the Application Configuration tool. Necessary special handling considered in the Application Configuration tool logics. ALARM is active when the IED starts.
Max delay The maximum delay ( Monitoring > IED status > SMV traffic) must be in all conditions smaller than the SMV Max Delay parameter ( Configuration > System). Larger values indicate configuration problems in the network or the need to change the SMV Max Delay.
Average delay The average delay ( Monitoring > IED status > SMV traffic) variation is small in different network traffic setups. A large variation may indicate configuration problems in the network.
Measurement In the SMV receivers' Measurement view, the voltage values should be without brackets indicating good status. Brackets indicate questionable or invalid values. The SMV traffic delay ( Monitoring > IED status > SMV traffic) value should be lower than the value of SMV Max delay (Max 6.48ms).
Table 3. Time synchronization

Item

Description

Checked

Time quality

Observe the grandmaster accuracy (Monitoring > IED status > Time Synchronization). The IED GNRLLTMS1 WARNING signal is activated if the accuracy is not within the specified limits.

Missing clock

Disable the clock master and check that one IED takes the clock master role.

SMV Synch accuracy

The global clock is seen when the clock master is present.

Local synch accuracy

The synchronization accuracy needs to be better than 4 μs which is the defined supervision limit. 1

Max Dev synch Accuracy

The synchronization accuracy needs to be better than 4 μs which is the defined supervision limit. 1

Grandmaster

Check the grandmaster monitoring from the master configuration via the LHMI path Monitoring > IED status > Time synchronization. Check that all IEDs are synchronized to the same PTP master.

Table 4. Network
Item Description Checked
Max HSR loop size Maximum supported HSR loop size is 30. Consider applying different topology in case a larger system is needed.
Redundancy Check the maximum delays in different network setups.
1 4 μs corresponds to approximately 0.07 degrees in 50 Hz systems