Register Maps; B.2.1 Summary - GE ALPS Instruction Manual

APPENDIX B
B.2 REGISTER MAPS
a) FIXED VALUE REGISTERS (START ADDRESS 0000)
This is fixed data (read-only) reported by the ALPS.
b) DYNAMIC VALUE REGISTERS (START ADDRESS 1000)
This is metered actual values and other dynamic data reported by the ALPS.
c) EVENT REGISTERS (START ADDRESS 2000)
All Events stored in the ALPS will be in time order, starting with the most recent event. There can be at most 150 events.
d) REPORT REGISTERS (START ADDRESS 1131; DATA STARTS AT 20000)
Report registers are a special set of registers that must be accessed by following a strict protocol sequence. The nature of
some reports is such that the report data varies with certain values of device settings. Given the fact that report data is vari-
able, it is not possible to assign a fixed number of registers that will represent this data. Instead, the following sections pro-
vide a byte sequence that describe the format of the different reports.
FAULT REPORT
Detailed information about a fault can be accessed from the device by requesting a fault report read. The byte sequence for
fault reports is as follows:
Table B–2: FAULT REPORT BYTE SEQUENCE
REGISTER FIELD
20000 FAULT NUMBER
20001 TRIP DATE
20003 TRIP TIME
20005 RELAY OPERATING TIME
20006 BREAKER OPERTATING TIME
20007 FAULT TYPE
20008 TRIP TYPE
20009 DISTANCE in miles
20010 PREFAULT Ia
20011 PREFAULT Ib
20012 PREFAULT Ic
20013 PREFAULT In
20014 FAULT Va
20015 FAULT Vb
20016 FAULT Vc
20017 FAULT Ia
20018 FAULT Ib
20019 FAULT Ic
20020 FAULT In
20021 CYCLES
20022 PREFAULT
20023 PRTRIP
20024 OSC DATA CONTINUITY
20025 NUMSETT
GE Power Management
SIZE BYTE FORMAT
(BYTES)
2 Unsigned Integer
4 F1
4 F2
2 Unsigned Integer
2 Unsigned Integer
2 F61
2 F17
2 P10
2 P100
2 P100
2 P100
2 P100
2 P10
2 P10
2 P10
2 P100
2 P100
2 P100
2 P100
2 Unsigned Integer
2 Unsigned Integer
2 Unsigned Integer
2 Unsigned Integer
2 Unsigned Integer
ALPS Advanced Line Protection System
B.2 REGISTER MAPS

B.2.1 SUMMARY

DESCRIPTION
Current fault report number
Date of trip in MM/DD/YYYY format
Time of trip in HH.MM.SS.sss format
Relay operating time in sample counts
Breaker operating time in sample counts
Fault type message
Trip type message
Distance in miles
RMS phase A current
RMS phase B current
RMS phase C current
RMS neutral current
RMS phase A voltage
RMS phase B voltage
RMS phase C voltage
RMS phase A current
RMS phase B current
RMS phase C current
RMS neutral current
Cycles per fault
Prefault cycles per fault
Percent of oscillography fault data to put as pretrip
data
0: Oscillography data is continuous
1: Delayed trip is taken care of by incorporating
discontinuity in the oscillography data
Number of settings in the ALPS
B
B-3