ABB RED670 Commissioning Manual page 267

1MRK 505 378-UUS Rev. J
11.13.14.2 Single ended fault locator
Table 47:
Parameter
I
Healthy conditions
Impedance |Z|
Impedance angle ZF
Measuring the fault distance
1. Set the test point (|Z| fault impedance and ZF impedance phase angle) for a condition that meets
the requirements in Table 47.
2. Subject the IED to healthy normal load conditions for at least two seconds.
3. Apply a fault condition.
4. Check the fault distance under disturbance records or function status.
Check that the distance-to-fault value displayed on the HMI complies with Equations 112,
114.
p
EQUATION123 V1 EN-US
in % for two-pole and three-pole faults
p
EQUATION124 V1 EN-US
in % for single-phase-to-ground faults

p
IECEQUATION18001 V1 EN-US
in % for single-phase-to-ground faults with mutual zero sequence current.
Line differential protection RED670
Commissioning manual
Test settings
Condition
V = 69.3 V, I = 0 A & ZF = 0°
Test point
Note:
•
•
•
Test angle
•
•
Z
x
×
------ - 100
=
X1
×
3 Z
= ×
x 100
+ ×
X0 2 X1

3 Z

X
100
  
X0 2 X1 M
© 2017 - 2021 Hitachi Power Grids. All rights reserved
£ (X0 + 2 · X1)/3 For single-phase faults
Z
x
£ X1 For three and two phase faults
Z
x
£ (X0 + 2 · X1 + XM)/3 For single-phase fault with mutual zero-sequence
Z
x
current
ZF arctan[(X0 + 2 · X1) / (R0 + 2R1)] For single-phase faults
ZF arctan(X1/R1) For two-phase faults
Section 11
Testing functionality by secondary injection
GUID-88FF03E2-BB5C-4662-840D-C9A02F7A3D0F v1
GUID-8A5CE857-8844-4288-B19A-9AE1217DC9D4 v2
113
(Equation 112)
(Equation 113)
(Equation 114)
and
261