GE L30 Instruction Manual page 10

10. APPLICATION OF
SETTINGS
11. COMMISSIONING
A. FLEXANALOG AND
FLEXINTEGER
PARAMETERS
B. MODBUS
COMMUNICATIONS
C. IEC 61850
COMMUNICATIONS
x
TABLE OF CONTENTS
10.1 CT REQUIREMENTS
10.1.1 INTRODUCTION ..............................................................................................10-1
10.1.2 CALCULATION EXAMPLE 1............................................................................10-1
10.1.3 CALCULATION EXAMPLE 2............................................................................10-2
10.2 CURRENT DIFFERENTIAL (87L) SETTINGS
10.2.1 INTRODUCTION ..............................................................................................10-3
10.2.2 CURRENT DIFFERENTIAL PICKUP ...............................................................10-3
10.2.3 CURRENT DIFF RESTRAINT 1 .......................................................................10-3
10.2.4 CURRENT DIFF RESTRAINT 2 .......................................................................10-3
10.2.5 CURRENT DIFF BREAK POINT ......................................................................10-3
10.2.6 CT TAP .............................................................................................................10-4
10.3 CHANNEL ASYMMETRY COMPENSATION USING GPS
10.3.1 DESCRIPTION .................................................................................................10-6
10.3.2 COMPENSATION METHOD 1 .........................................................................10-6
10.3.3 COMPENSATION METHOD 2 .........................................................................10-7
10.3.4 COMPENSATION METHOD 3 .........................................................................10-7
10.4 INSTANTANEOUS ELEMENTS
10.4.1 INSTANTANEOUS ELEMENT ERROR DURING L30 SYNCHRONIZATION .10-9
11.1 TESTING
11.1.1 CHANNEL TESTING ........................................................................................11-1
11.1.2 CLOCK SYNCHRONIZATION TESTS .............................................................11-2
11.1.3 CURRENT DIFFERENTIAL..............................................................................11-3
11.1.4 LOCAL-REMOTE RELAY TESTS ....................................................................11-4
A.1 PARAMETER LISTS
A.1.1 FLEXANALOG ITEMS ....................................................................................... A-1
A.1.2 FLEXINTEGER ITEMS ...................................................................................... A-8
B.1 MODBUS RTU PROTOCOL
B.1.1 INTRODUCTION ............................................................................................... B-1
B.1.2 PHYSICAL LAYER ............................................................................................ B-1
B.1.3 DATA LINK LAYER ........................................................................................... B-1
B.1.4 CRC-16 ALGORITHM ....................................................................................... B-2
B.2 MODBUS FUNCTION CODES
B.2.1 SUPPORTED FUNCTION CODES ................................................................... B-3
B.2.2 READ ACTUAL VALUES OR SETTINGS (FUNCTION CODE 03/04H) ........... B-3
B.2.3 EXECUTE OPERATION (FUNCTION CODE 05H)........................................... B-4
B.2.4 STORE SINGLE SETTING (FUNCTION CODE 06H)....................................... B-4
B.2.5 STORE MULTIPLE SETTINGS (FUNCTION CODE 10H) ................................ B-5
B.2.6 EXCEPTION RESPONSES............................................................................... B-5
B.3 FILE TRANSFERS
B.3.1 OBTAINING RELAY FILES VIA MODBUS........................................................ B-6
B.3.2 MODBUS PASSWORD OPERATION ............................................................... B-7
B.4 MEMORY MAPPING
B.4.1 MODBUS MEMORY MAP ................................................................................. B-9
B.4.2 DATA FORMATS............................................................................................. B-60
C.1 OVERVIEW
C.1.1 INTRODUCTION ............................................................................................... C-1
C.1.2 COMMUNICATION PROFILES ......................................................................... C-1
L30 Line Current Differential System GE Multilin