GE Multilin 845, Руководство по связи

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5-2 8 SERIES PROTECTIVE RELAY PLATFORM – COMMUNICATIONS GUIDE
CHAPTER 5: DNP / IEC104 POINT LISTS
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Note that a scale factor of ”/ 0.1” is equivalent to a multiplier of 10.
DNP ANALOG INPUT POINT 0(31) DEADBAND
Range: 1 to 100000000 in steps of 1
Default: 30000
The setting is the threshold value to define the condition to trigger unsolicited responses
containing analog input data. Each setting represents the default deadband value for
the associated analog input. For example, to trigger unsolicited responses from the
8 Series relay when phase A current changes by 15 A, the DNP CURRENT DEADBAND for
Phase A current should be set to “15”. Note that these settings are the deadband default
values. DNP object 34 points can be used to change deadband values from the default
for each individual DNP analog input point. Whenever power is removed and re-applied
to the 8 Series relay the new deadbands are in effect.
The binary output points for the DNP protocol, or the CSC/CDC points for IEC 60870-5-104
protocol, can be configured to a maximum of 16 points. The data source for each point is
user-programmable and can be configured by assigning FlexLogic operands. The menu
path for the binary output points (DNP) or CSC/CDC points (IEC 60870-5-104) is shown
below.
Path :
Setpoints > Device > Communications > DNP/IEC104 Point Lists > Binary Output /
CSC/CDC Points
Binary Output Point 0 ON
Binary Output Point 0 OFF
...
Binary Output Point 15 ON
Binary Output Point 15 OFF
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The DNP / IEC 60870-5-104 point lists always begin with point 0 and end at the first “Off”
value. Since DNP / IEC 60870-5-104 point lists must be in one continuous block, any points
assigned after the first “Off” point are ignored.
BINARY INPUT POINTS
The DNP binary input data points are configured through the DNP / IEC104 POINT LISTS
BINARY INPUT / MSP POINTS menu. When a freeze function is performed on a binary
counter point, the frozen value is available in the corresponding frozen counter point.
BINARY INPUT POINTS
Static (Steady-State) Object Number: 1
Change Event Object Number: 2
Request Function Codes supported: 1 (read), 22 (assign class)
Static Variation reported when variation 0 requested: 2 (Binary Input with status),
Configurable
Change Event Variation reported when variation 0 requested: 2 (Binary Input Change
with Time), Configurable
Change Event Scan Rate: 8 times per power system cycle
Change Event Buffer Size: 1024
Default Class for All Points: 1
POINT NAME/DESCRIPTION COUNTERS
The following details lists both Binary Counters (Object 20) and Frozen Counters (Object 21).
When a freeze function is performed on a Binary Counter point, the frozen value is
available in the corresponding Frozen Counter point. 8 Series relay Digital Counter values
are represented as 16 or 32-bit integers. The DNP 3.0 protocol defines counters to be
unsigned integers. Care should be taken when interpreting negative counter values.
BINARY COUNTERS