Siemens SIPROTEC 7SD610 Manual page 305

Consistency of Topology and Parameterisation
Having performed the above checks, the linking of a device pair, including their communication converters, has
been completely tested and connected to the auxiliary supply voltage. Now the devices communicate by them-
selves.
• Check now the Event Log or the spontaneous annunciations of the device you are working on:
– Message No. 3243 „PI1 with" (protection data interface 1 linked with) followed by the device index of
the other device.
– If the devices are at least connected once, the message No. 3458 „Chaintopology" will appear.
– If no other devices are involved in the topology as an entity, the message No. 3464 „Topol complete"
will then be displayed, too.
– And if the device configuration is also consistent, i.e. the prerequisites for setting the function scope (Sec-
tion 2.1.1),Power System Data 1 (2.1.2.1), Power System Data 2 (2.1.4.1) topology and protection data
interface parameters (Section 2.2.3.1) have been considered, the fault message, i.e. No. 3229 „PI1
Data fault", for the interface just checked will disappear. The communication and consistency test
has now been completed.
– If the fault message of the interface being checked does not disappear, however, the fault must be found
and eliminated. Table lists messages that indicate such faults.
Table 3-15
No Short Text
3233 „DT
inconsistent"
3234 „DT unequal"
3235 „Par. different"
3487 „Equal IDs"
Availability of the protection data interfaces
The quality of protection data transmission depends on the availability of all transmission media. Therefore,
check the statistic information of the device.
Check the following indications:
• Indication No. 7753 „PI1A/m" (availability per minute) and indication No. 7754 „PI1A/h" (availability per
hour) indicate the availability of protection data interface 1. The value of No. 7753 „PI1A/m" should attain
a minimum per-minute-availability of 99.85% after two minutes of operation. The value for No. 7754
„PI1A/h" should attain a minimum per-hour-availability of 99.85 % after one hour of operation.
If these values are not attained, the protection communication should be checked.
If GPS synchronisation is used, the transmission times can be retrieved separately for each direction:
• For protection data interface 1, indication no. 7876 „PI1 TD S" indicates the transmission time in sending
direction and no. 7875 „PI1 TD R" in receiving direction.
In all other cases, the mean value for both directions will be indicated:
• Indication No. 7751 „PI1 TD" indicates the transmission time for protection data interface 1.
SIPROTEC, 7SD610, Manual
C53000-G1176-C145-6, Release date 02.2011
Annunciations on inconsistencies
State
ON „Device table inconsistent": the indexing of the devices is inconsistent
(missing numbers or one number used twice, see Section 2.2.3.1)
ON „Device table unequal": the ID-numbers of the devices are unequal (see
Section 2.2.3.1 )
ON „Parameterization inconsistent": different functional parameters were set
for the devices. They have to be equal at both ends:
Differential protection available or not (see Section 2.1.1)
Transformer in protected zone or not (see Section 2.1.1)
Nominal frequency (see Section 2.1.2)
Operational power or current (see Section 2.1.4)
ON „Same device address:": The parameter 4710 LOCAL RELAY has been
set for several devices.
Mounting and Commissioning
Meaning / Measures
3.3 Commissioning
305