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Hitachi 670 Series Application Guide
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IEC10000242 V1 EN-US
Figure 48:
Hardware Channel Allocation dialog
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IEC10000243 V1 EN-US
Figure 49:
An example of selected hardware channels
When a User Defined Name is given for the selected Hardware Channel, it will also become visible in
SMT (see Figure
50
).
1MRK505382-UEN Rev
. K
Section 4
Analog and binary signal transfer for line differential protection
Communication set-up, 670/650 series
47
Application Guide
© 2017 - 2023 Hitachi Energy
. All rights reserved
52
54
Table of Contents
Table of Contents
7
Introduction
11
This Manual
11
Intended Audience
11
Product Documentation
11
Product Documentation Set
11
Document Revision History
12
Related Documents
13
Document Symbols and Conventions
15
Symbols
15
Document Conventions
15
Telecommunication Networks and Line Differential Protection
17
Overview
17
Telecommunication Network Types
17
Telecommunication Networks with Symmetric or Fixed Routes
18
Maximum Time Deviation between Internal Clocks
19
Setting the Maximum Time Deviation
19
Reference Clock Deviation from the Set Maximum Time Deviation
20
Longer Route Switching Interruptions
21
Detecting Accumulated Time Delay Changes with Echo Timing
21
Common Time Synchronization
23
Design of the Time System (Clock Synchronization)
23
Time Synchronization Using a Built-In GPS Receiver
24
Time Synchronization Using IRIG-B
25
Analog and Binary Signal Transfer for Line Differential Protection
27
Communication Channels for Line Differential Protection
27
Communication between Channels Via Line Data Communication Module
28
Configuration of Analog Signals
28
Configuration of Analog Inputs
29
Configuration of Output Signals
30
Configuration of Redundant Channels
31
Link Forward
33
Application Configuration ACT
34
Configurations with Power Transformers in the Protected Zone
35
Line Differential Protection L3CPDIF, L6CPDIF, LT3CPDIF, LT6CPDIF
35
Power Transformers in the Protected Zone
35
Line Differential Protection L4CPDIF
37
Possible Configurations
37
Setting Examples
38
Line Differential Protection L3CPDIF, L6CPDIF, LT3CPDIF, LT6CPDIF
38
Line Differential Protection L4CPDIF
47
Setting Example with a Two-End Power Line
47
Configuration of Binary Signals
51
Operation Principle
51
Configuration of Binary Inputs and Outputs
52
Configuration of Binary Inputs and Outputs Via ACT
52
Configuration of Binary Inputs and Outputs Via SMT
54
Binary Output Signals
57
Setting Guidelines
60
Settings
64
Communication Set-Up
69
Communication Alternatives
69
Communication Channels
69
Fibre-Optic Communication Interfaces with C37.94 Protocol
71
Galvanic X.21 Line Data Communication (X.21-LDCM)
74
Introduction
74
Design
74
Functionality
76
Technical Data
76
Communication Via Built-In X.21 Galvanic Interface
77
Service Settings for the Line Differential Protection IED with X.21 Galvanic Interface
77
PDH Telecommunication Via C37.94 Interface to External Transceiver C37.94-X.21
77
PDH Telecommunication Via C37.94 Interface to Transceiver 21-216
78
Communication Requirements
78
Communication Structure Via C37.94 Interface to Transceiver 21-216
79
Setting up Transceiver 21-216
79
Power-Up and LED Statuses with Transceiver 21-216
81
Service Settings
82
Service Settings for the Line Differential Protection IED
82
Service Settings for Transceiver 21-216
83
Earthing
83
Communication Structure for Laboratory Testing
84
PDH/SDH Telecommunication Via C37.94 Interface to Transceiver 21-219
85
Communication Requirements
85
Communication Structure with Transceiver 21-219 Port Synchronized from SDH Master Clock
85
Communication Structure with PDH/SDH Port Synchronized from Transceiver 21-219
86
Setting up Transceiver 21-219
87
Power-Up and LED Statuses with Transceiver 21-219
89
Service Settings
90
Service Settings for the Line Differential Protection IED
90
Service Settings for Transceiver 21-219
91
Earthing
91
Communication Structure for Laboratory Testing
92
Communication Status and Fault Tracing
92
Communication Status on the Line Differential Protection IED
92
Detecting Communication Faults on Transceiver 21-216
95
Detecting Communication Faults on Transceiver 21-219
95
Detecting Communication Faults through Loop-Back Testing
96
Appendix
99
Sample Specification of Communication Requirements
99
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Hitachi 670 Series Specifications
General
Brand
Hitachi
Model
670 Series
Category
Control Unit
Language
English
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