GE RPV311, Technical Manual

Page: 148 / 295

Chapter 9
– TW Fault Locator
RPV311
148 RPV311-TM-EN-7
Figure 74
– Three terminal line application
5.1 Examples
Consider the TAP point located at 50% of line A-B and 50% of line C-B. Consider the
names and topology of
Figure 74 .
Example 1:
If the result of the fault location of the line A-B returns more than 50% of the length
of the line and the result of the fault location of line C-B also returns more the 50% of
the length, then we know the fault is in the L1’’ section, as in
Figure 74 Figure 75.
Example 2
Now consider the result of fault location on line A-B being at more than 50% of the
length and the result of the fault location on line C-B at less than 50%, then we know
the fault is in the L2 section, as in Figure 75 and Figure 76 show the location of the
faults in example 1 and 2, respectively.