332
Fault locator (FLOC)
&KDSWHU
0RQLWRULQJ
For double lines, the fault equation is:
(Equation 68)
Because the D
A
distribution factor according to equation 66 or 69 is a function of p, the
general equation 68 can be written in the form:
(Equation 70)
Where:
(Equation 71)
(Equation 72)
(Equation 73)
Where:
I
0P
is a zero sequence current of the parallel line,
Z
0M
is a mutual zero sequence impedance and
D
A
is the distribution factor of the parallel line, which is:
(Equation 69)
U
A
I
A
p Z
1L
I
FA
D
A
--------
R
F
I
0P
Z
0M
⋅
+
⋅
+
⋅ ⋅
=
D
A
1
p
–
(
)
Z
A
Z
A L
Z
B
+
+
(
)
Z
B
+
⋅
2 Z
A
Z
L
2 Z
B
⋅
+
+
⋅
-----------------------------------------------------------------------------
=
p
2
p K
1
K
2
K
3
R
F
⋅
–
+
⋅
–
0
=
K
1
U
A
I
A
Z
L
⋅
----------------
Z
B
Z
L
Z
A DD
+
---------------------------
1
+
+
=
K
2
U
A
I
A
Z
L
⋅
----------------
Z
B
Z
L
Z
A DD
+
---------------------------
1
+
⋅
=
K
3
I
F A
I
A
Z
L
⋅
----------------
Z
A
Z
B
+
Z
1
Z
A DD
+
---------------------------
1
+
⋅
=
Summary of Contents for REO 517
Page 10: ... RQWHQWV ...
Page 16: ...6 Introduction to the application manual KDSWHU QWURGXFWLRQ ...
Page 64: ...54 Blocking of signals during test KDSWHU RPPRQ IXQFWLRQV ...
Page 88: ...78 Scheme communication logic ZCOM KDSWHU LQH LPSHGDQFH ...
Page 146: ...136 Unbalance protection for capacitor banks TOCC KDSWHU XUUHQW ...
Page 166: ...156 Dead line detection DLD KDSWHU 3RZHU V VWHP VXSHUYLVLRQ ...
Page 378: ...368 Monitoring of DC analog measurements KDSWHU 0RQLWRULQJ ...
Page 384: ...374 Pulse counter logic PC KDSWHU 0HWHULQJ ...
Page 412: ...402 Serial communication modules SCM KDSWHU DWD FRPPXQLFDWLRQ ...
Page 440: ...430 LED indication module KDSWHU DUGZDUH PRGXOHV ...