Access points diagnostics
GUID-20F64A6D-AA8C-47D7-AA7D-4810996B2FF2 v2
The access point diagnostics function blocks (RCHLCCH,
SCHLCCH and FRONTSTATUS) supervise
communication. SCHLCCH is used for communication
over the rear Ethernet ports, RCHLCCH is used for
redundant communications over the rear Ethernet ports
and FRONTSTATUS is used for communication over the
front port. All access point function blocks include
output signal for denial of service.
Redundant communication
GUID-A90FDBA7-D4D7-4CBD-9F05-13DCC9971779 v8
PRP IEC 62439-3 redundant communication
Redundant communication according to IEC 62439-3
PRP-0 and IEC 62439-3 PRP-1 parallel redundancy
protocol (PRP) is available as an option when ordering
IEDs. PRP according to IEC 62439-3 uses two optical/
Galvanic(RJ45) Ethernet ports.
HSR IEC 62439-3 High-availability seamless redundancy
Redundant station bus communication according to IEC
62439-3 Edition 2 High-availability seamless redundancy
(HSR) is available as an option when ordering IEDs.
Redundant station bus communication according to IEC
62439-3 uses two optical/Galvanic(RJ45) Ethernet ports.
The HSR ring supports the connection of up to 30 relays.
If more than 30 relays are to be connected, it is
recommended to split the network into several rings to
guarantee the performance for real-time applications.
Routes
GUID-95F9C7BA-92F8-489F-AD0A-047410B5E66F v1
A route is a specified path for data to travel between the
source device in a subnetwork to the destination device
in a different subnetwork. A route consists of a
destination address and the address of the gateway to
be used when sending data to the destination device,
see Figure
9.
Gateway
Source Destination
Default gateway
IEC16000095-1-en.vsdx
IEC16000095 V1 EN-US
Figure 9. Route from source to destination through gateway
20.
Station communication
Communication protocols
M14815-3 v14
Each IED is provided with several communication
interfaces enabling it to connect to one or many
substation level systems or equipment, either on the
Substation Automation (SA) bus or Substation
Monitoring (SM) bus.
Available communication protocols are:
• IEC 61850-8-1 communication protocol
• IEC/UCA 61850-9-2LE communication protocol
• LON communication protocol
• SPA communication protocol
• IEC 60870-5-103 communication protocol
• DNP 3.0 communication protocol
Several protocols can be combined in the same IED.
IEC 61850-8-1 communication protocol
M14787-3 v16
IEC 61850 Ed.1 or Ed.2 can be chosen by a setting in
PCM600. The IED is equipped with up to six (order
dependent) optical Ethernet rear ports for IEC 61850-8-1
station bus communication. The IEC 61850-8-1
communication is also possible from the electrical
Ethernet front port. IEC 61850-8-1 protocol allows
intelligent electrical devices (IEDs) from different
vendors to exchange information and simplifies system
engineering. IED-to-IED communication using GOOSE
and client-server communication over MMS are
supported. Disturbance recording file (COMTRADE)
uploading can be done over MMS or FTP.
The front port is only intended for
PCM600 communication, maintenance,
training and test purposes due to risk
of interference during normal
operation.
IEC 61850 quality expander QUALEXP
GUID-9C5DC78E-041B-422B-9668-320E62B847A2 v1
The quality expander component is used to display the
detailed quality of an IEC/UCA 61850-9-2LE analog
channel. The component expands the channel quality
output of a Merging Unit analog channel received in the
IED as per the IEC 61850-7-3 standard. This component
can be used during the ACT monitoring to get the
particular channel quality of the Merging Unit.
Supervision of GOOSE subscription (ALGOS)
GUID-8EF4A900-FE3D-4111-8914-FC4EEE6AB711 v1
ALGOS reports the status of GOOSE communication to a
client according to IEC 61850.
There should be one instance of ALGOS in an IED for
each data set that the IED receives from other IEDs.
Generator protection REG670
1MRK 502 074-BEN M
46 Hitachi Power Grids
© Copyright 2017 Hitachi Power Grids. All rights reserved
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