ABB Relion 670 series - Measuring the Operate Limit

The result is displayed on the local HMI or via PCM600. Distances to faults for the last 100 recorded
disturbances can be found on the local HMI under Main menu/Disturbance Records /Disturbance
#n(n = 1–100)/General Information
If PCM600 is used, the result is displayed on the recording list after upload, including loop selection
information.
Table 41: Test settings
Parameter Condition
I
Healthy conditions V = 69.3 V, I = 0 A & ZF = 0°
Impedance |Z| Test point
Note:
• Z
x
£ (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
current
Impedance angle ZF Test angle
• ZF arctan[(X0 + 2 · X1) / (R0 + 2R1)] For single-phase faults
• ZF arctan(X1/R1) For two-phase faults
11.14.14.3 Measuring the operate limit
M14955-48 v7
1. Set the test point (|Z| fault impedance and ZF impedance phase angle ) for a condition that meets
the requirements in
Table 41.
2. Subject the IED to healthy normal load conditions for more than the prefault recording time in
DRPRDRE function.
3. Apply a fault condition.
Check that the distance-to-fault value displayed on the HMI complies with
Equation 132, Equation
133 and Equation 134
p
Z
x
X1
-------
100×=
EQUATION123 V1 EN-US (Equation 132)
in % for two- and three-pole faults
x
3 Z
p 100
X0 2 X1
×
= ×
+ ×
EQUATION124 V1 EN-US
(Equation 133)
in % for single-phase-to-ground faults
p
3 Z×
x
X0 2 X1 XM±×+
---------------------------------------------
100×=
EQUATION125 V1 EN-US
(Equation 134)
1MRK 504 165-UUS Rev. J Section 11
Testing functionality by secondary injection
Transformer protection RET670 287
Commissioning manual
© 2017 - 2021 Hitachi Power Grids. All rights reserved