Schweitzer Engineering Laboratories SEL-700G Series, Инструкция по эксплуатации

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F.13
Date Code 20170814 Instruction Manual SEL-700G Relay
IEC 61850 Communications
Logical Node Extensions
Logical Node Extensions
The following Logical Nodes and Data Classes were created in this device as
extensions to the IEC 61850 standard, in accordance with IEC 61850
guidelines.
Table F.8 defines the data class, Thermal Metering Data. This class is a
collection of simultaneous measurements (or evaluations) that represent the
RTD thermal metering values. Valid data depend on the presence and
configuration of the RTD module(s).
Table F.7 New Logical Node Extensions
Logical Node
IEC
61850
Description or Comments
Thermal Measurements
(for equipment or ambient
temperature readings) MTHR This LN will be used to represent values
from RTDs and to calculate thermal
capacity and usage mainly used for
Thermal Monitoring.
Demand Metering Statistics MDST This LN will be used for calculation of
demand currents in a three-phase system.
This shall not be used for billing purposes.
Circuit Breaker Supervision SCBR Circuit breaker supervision abrasion and
operation values.
Table F.8 Thermal Metering Data Logical Node Class Definition (Sheet 1 of 2)
Data Object
Name
Common
Data
Class
Explanation
T
a
M/O/C/E
b
MTHR Class
LNName The name will be composed of the class
name, LN-Prefix, and LN-Instance-ID
according to IEC 61850-7-2.
Common Logical Node Information
LN shall inherit all Mandatory Data
from Common Logical Node Class. M
EEHealth INS External equipment health
(RTD Communications Status). E
Data Objects
Measured Values
MaxAmbTmp MV Maximum Ambient Temperature E
MaxOthTmp MV Maximum Other Temperature E
Tmp01 MV Temperature 1 E
Tmp02 MV Temperature 2 E
Tmp03 MV Temperature 3 E
Tmp04 MV Temperature 4 E
Tmp05 MV Temperature 5 E
Tmp06 MV Temperature 6 E
Tmp07 MV Temperature 7 E
Tmp08 MV Temperature 8 E