General Power System Data (Power System Data 1); Setting Notes - Siemens SIPROTEC Manual

Functions
2.1 General
Addr. Parameter
142 Therm.Overload
143 TRANSFORMER
144 V-TRANSFORMER
145 P. INTERFACE 1
146 P. INTERFACE 2
147 NUMBER OF RELAY
148 GPS-SYNC.
149 charge I comp.
160 L-sections FL
2.1.2

General Power System Data (Power System Data 1)

The device requires some plant and power system data in order to be able to adapt its functions accordingly,
depending on the actual application. The data required include for instance rated data of the substation and the
measuring transformers, polarity and connection of the measured quantities, if necessary features of the circuit
breakers, and others. Furthermore, there are several function parameters associated with several functions
rather than one specific protection, control or monitoring function. The Power System Data 1 can only be
changed from a PC running DIGSI and are discussed in this section.

2.1.2.1 Setting Notes

Polarity of the current transformers
In address 201 CT Starpoint, the polarity of the wye-connected current transformers is specified (the fol-
lowing figure also goes for only two current transformers). The setting determines the measuring direction of
the device (forward = line direction). A change in this setting also results in a polarity reversal of the earth
current inputs I
44
Setting Options
Disabled
Enabled
NO
YES
Not connected
connected
Enabled
Disabled
IEEE C37.94
Disabled
Enabled
IEEE C37.94
2 relays
3 relays
4 relays
5 relays
6 relays
Enabled
Disabled
Enabled
Disabled
1 Section
2 Sections
3 Sections
or I .
E EE
Default Setting
Disabled Thermal Overload Protection
NO Transformer inside protection
zone
connected Voltage transformers
Enabled Protection Interface 1 (Port D)
Disabled Protection Interface 2 (Port E)
2 relays Number of relays
Disabled GPS synchronization
Disabled charging current compensation
1 Section Line sections for fault locator
C53000-G1176-C169-5, Release date 02.2011
Comments
SIPROTEC, 7SD5, Manual