Section 3 Rel650 Setting Examples; Setting Example For A Two-Ended Overhead Transmission Line In A Solidly Grounded Network - ABB REL650 Applications Manual

1MRK 506 334-UUS A
Section 3
3.1
Application manual
REL650 setting examples
Setting example for a two-ended overhead
transmission line in a solidly grounded network
The application example: a 138 kV line as shown in figure
A
REL 650
Y
ANSI11000108 V1 EN
Figure 5: Two-ended overhead transmission line in a solidly grounded network
The following data is assumed:
Table 2: Data for the line application example
Entity
Line length
Positive sequence impedance
Zero sequence impedance
High positive sequence source impedance at A
Low positive sequence source impedance at A
High zero sequence source impedance at A
Low zero sequence source impedance at A
High positive sequence source impedance at B
Low positive sequence source impedance at B
High zero sequence source impedance at B
Table continues on next page
REL650 setting examples
B
Z 1 = R 1 + jX 1
Z 0 = R 0 + jX0
REL 650
Value
50 km
0.05 + j 0.35 Ω/km ⇒ 2.5 + j17.5 Ω
0.15 + j 1.00 Ω/km ⇒ 7.5 + j50 Ω
j10 Ω (about 1 900 MVA)
j3.2 Ω (about 6 000 MVA)
j8 Ω
j5 Ω
j10 Ω (about 1 900 MVA)
j3.2 Ω (about 6 000 MVA)
j8 Ω
Section 3
4
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ANSI11000108_1_en.vsd
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