SIGRA204b.tifFigure 3-24Defining the Input Format for the Fault Locator
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Fault Records3.10 Parameterizing fault records85SIPROTEC, SIGRA, ManualE50417-H1176-C070-B1, Edition 06.2017✧If you want to carry out a two-ended fault location, select the network node via Network Nodeat Opposite Line End.✧Specify the line data in the parameter table. The Device Settingscolumn in the table displays the original device settings coming from the RIO file. When a fault record is opened for the first time, the values from the RIO file are used as line data. You can change the line data manually. Click Add sectionto insert the parameter table for another line section. You can parameterize a maximum of 10 line sections. To delete a section, select it and click DeleteSec-tion.✧If necessary, activate the check box Consider Trigger Points to apply synchronized fault records for fault location. If a fault location fails, you can activate the check box Consider Trigger Points and try fault location again. With this option, it is possible to use the trigger points as reference for the synchronization. The precondition for this option is that the deviation between the trigger points of the same event is less than one cycle. For details, refer to chapter 5.15.✧Activate the check box Use the range between two cursorsif you want to specify the record range used for fault location manually.With this option, you can position the 2 cursors to select a range before starting fault location.The following table shows the definition of line data in the parameter table. FieldMeaningNameName of the line sectionLengthLength of the line section in km/miles1TypeType of the line section Available options are Overhead Line, Three-Core Cable, and Single-Core Cable.This information is used to determine appropriate values for the zero capacity.Central PhaseThe phase in the middle of the phase arrangement Resistance (R1)/Resistance Value (R1')Ohmic equivalent resistance (absolute in Ωor relative in Ω/km)Reactance (X1)/Reactance Value (X1')Inductive resistance (absolute in Ωor relative in Ω/km)Impedance (Z1)/Impedance Value (Z1')Impedance (absolute in Ωor relative in Ω/km)Line angleThe displacement of the line to the impedance phase.Capacity (Cb)/Capacity Value (Cb')Effective capacityIf the capacity value is not known, then you can also enter Value unknown. An appropriate value is then calculated automatically depending on the type of line.RE/RL, XE/XLGround impedance2matching over the conditioning: RE=R1*(RE/RL)kL Factor, kL AngleGround impedance matching over: kL = ZE/Z1Z0/Z1 Value, Z0/Z1 AngleGround impedance matching over: Z0/Z1
Fault Records3.10 Parameterizing fault records86SIPROTEC, SIGRA, ManualE50417-H1176-C070-B1, Edition 06.20171Depends on the input format, the remaining variables are calculated.
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