Sel 751A, Instruction Manual

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F.5
Date Code 20100129 Instruction Manual SEL-751A Relay
IEC 61850 Communications
IEC 61850 Operation
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 VB nnn
bits in Table F.15 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-751A virtual bits for
controls, you must create SEL
OGIC
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 will be able to track bit
transitions (via reporting) between LN data update scans.
In addition to the Virtual Bits, the breaker control bits CC and OC can also be
mapped to GOOSE receive messages.
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 required 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.
Reports
The SEL-751A supports buffered and unbuffered report control blocks in the
report model as defined in IEC 61850-8-1:2004(E). The predefined reports
shown in
Figure F.1 are available by default via IEC 61850.