Schweitzer Engineering Laboratories SEL-700G Series, Instruction Manual

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F.5
Date Code 20170814 Instruction Manual SEL-700G Relay
IEC 61850 Communications
IEC 61850 Operation
IEC 61850 GOOSE objects can quickly and conveniently transfer status,
controls, and measured values between peers on an IEC 61850 network.
Configure SEL devices to respond to GOOSE messages from other network
with
AC
SEL
ERATOR
Architect software. Also, configure outgoing GOOSE
messages for SEL devices in
AC
SEL
ERATOR
Architect. See the
AC
SEL
ERATOR
Architect online help for more information.
Each IEC 61850 GOOSE sender includes a text identification string (GOOSE
Control Block Reference) in each outgoing message and an Ethernet multicast
group address. Devices that receive GOOSE messages use the text identification
and multicast group to identify and filter incoming GOOSE messages.
Virtual bits (VB001–VB128) are control inputs that you can map to GOOSE
receive messages using the
AC
SEL
ERATOR
Architect software. See the VBnnn
bits in Table F.14 for details on which logical nodes and names are used for
these bits. This information can be useful when searching through device data
with MMS browsers. If you intend to use any SEL-700G virtual bits for
controls, you must create SEL
OGIC
control equations to define these
operations. The Virtual Bit Logical Nodes only contain Virtual Bit status, and
only those Virtual Bits that are assigned to an SER report are able to track bit
transitions (via reporting) between LN data update scans.
File Services
The Ethernet File System allows reading or writing data as files. The File
System supports FTP. The File System provides:
➤
A means for the devices to transfer data as files
➤
A hierarchical file structure for the device data (root level only
for SEL-700 series devices)
SCL Files
Substation Configuration Language (SCL) is an XML-based configuration
language used to support the exchange of database configuration data between
different tools, which may come from different manufacturers. There are four
types of SCL files:
➤
IED Capability Description file (.ICD)
➤
System Specification Description (.SSD) file
➤
Substation Configuration Description file (.SCD)
➤
Configured IED Description file (.CID)
The ICD file described the capabilities of an IED, including information on
LN and GOOSE support. The SSD file describes the single-line diagram of
the substation and the necessary LNs. The SCD file contains information on
all IEDs, communications configuration data, and a substation description.
The CID file, of which there may be several, describes a single instantiated
IED within the project, and includes address information.
NOTE:
Device bits mapped to
GOOSE subscriptions retain state
until overwritten, a new CID file is
loaded, or the device is restarted. To
reset the device bits by restarting the
device, issue an
STA C command or
remove and then restore power to
the device.