Operation Principle - ABB RES670 Technical Manual

Section 22
Basic IED functions
Table 593: IRIG-B Non group settings (basic)
Name Values (Range)
SynchType BNC
Opto
TimeDomain LocalTime
UTC
Encoding IRIG-B
1344
1344TZ
TimeZoneAs1344 MinusTZ
PlusTZ
Table 594: PTP Non group settings (advanced)
Name Values (Range)
Domain 0 - 127
Priority1 0 - 255
Priority2 0 - 255
22.1.3
22.1.3.1
766
Unit Step
- -
- -
- -
- -
Unit Step
- 1
- 1
- 1

Operation principle

General concepts
Time definitions
The error of a clock is the difference between the actual time of the clock, and the time
the clock is intended to have. Clock accuracy indicates the increase in error, that is, the
time gained or lost by the clock. A disciplined clock knows its own faults and tries to
compensate for them.
Design of the time system (clock synchronization)
The time system is based on a software clock, adjustable from external time sources,
and on a hardware clock. The protection and control modules will be timed from the
hardware clock which is synchronized with the software clock (see Figure 293).
Default Description
Opto Type of synchronization
LocalTime Time domain
IRIG-B Type of encoding
PlusTZ Time zone as in 1344 standard
Default Description
0 0 = Default domain, 1-3 = Alternative domain,
4-127 = User defined
128 The clock with the lowest priority 1 becomes
the reference clock (Grand Master)
128 If all the relevant values for selecting the
reference clock are the same for multiple
devices, the clock with the lowest priority 2 is
selected as the reference clock (Grand
Master)
Phasor measurement unit RES670 2.2 ANSI
1MRK 511 408-UUS A
PID-5187-SETTINGS v5
PID-6630-SETTINGS v2
IP12360-1 v4
M11346-77 v1
M11346-80 v3
GUID-E2B9E81C-5733-4521-B27F-BF33E05CCFB0 v8
Technical manual