ABB RELION REF615R, Technical Manual

Page: 535 / 664

I I k I ZL ZL ZL
rly rly Zero Pos Pos
* * * ( ) /
= + − 0
GUID-DC024A67-96A6-42A0-A9CC-1D814F9CA607 V1 EN
(Equation 31)
where
I I A I B I C
0
3
= + +
( _ _ _ ) /
GUID-522CAF08-239C-4194-89BD-FC39A043568D V1 EN
(Equation 32)
k 1.0 (scaling factor)
ZL
pos
and ZL
zero
refer to positive and zero-sequence line impedances.
ZL
pos
RL
pos
+ j*XL
pos
ZL
zero
RL
zero
+ j*XL
zero
RL
pos
PosSeqR * LinLen
XL
pos
PosSeqX * LinLen
RL
zero
ZeroSeqR * LinLen
XL
zero
ZeroSeqX * LinLen
I*
rly
Ground-compensated phase current
I
rly
Non-compensated phase current
R1 is positive-sequence line resistance in ohm/(miles or Kms) and is provided as a setting
X1 is positive-sequence line reactance in ohm/(miles or Kms) and is provided as a setting
R0 is zero-sequence line resistance in ohm/(miles or Kms) and is provided as a setting
X0 is zero-sequence line reactance in ohm/(miles or Kms) and is provided as a setting
Line Length is the length of the line in the units of Km (kilometers) or miles and is provided
as a setting.
If R1 , X1 , R0 , X0 are given in ohm/mile, the length of the line Line Length should be given
in the unit of miles
If R1 , X1 , R0 , X0 are given in ohm/Km, the length of the line Line Length should be given
in the unit of Km.
Table 395 describes what are the voltage phasor and current phasor under different fault
types.
1MRS240050-IB C
Section 10
Recording functions
REF615R 529
Technical Manual