Toshiba GR200 Series Instruction Manual page 95

Line differential protection ied

Hide thumbs Also See for GR200 Series:

Table of Contents

DIFL applied to double circuit line with a fault (Fault current outflowing)

Figure 2.6-13 shows that a fault occurs in the line GJ; we can see an outflow current induced

by the fault on the line HK. At the station-A, we can find the outflow significantly when the

fault occurs in close proximately to the station-B. The degree of the outflow current depends

on the conditions of the power sources at the station-A and the station-B, but a half of the fault

current flows out to the line HK. Thereby, the user should have an attention for the DIFL

settings when the DIFL function is applied for the double-circuit lines.

Figure 2.6-13 DIFL applied for double circuit

6F2S1914 (0.49)

GRL200 (Soft 033 & 037)

Chapters

Table of Contents