Verifying The Signals And Settings; Measuring The Operate Limit - ABB Relion 670 Series Commissioning Manual

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Section 11
Testing functionality by secondary injection
11.13.14.2

Verifying the signals and settings

The Fault locator function LMBRFLO depends on other functions to work properly, that is, phase
selection information from distance protection function and analog information supplied by the trip value
recorder function. Check that proper binary initiate (pickup or tripping) and phase selection signals are
connected and voltage and current signals are configured (parameter settings).
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 24:
Parameter
I
Healthy conditions
Impedance |Z|
Impedance angle ZF
11.13.14.3

Measuring the operate limit

1.
Set the test point (|Z| fault impedance and ZF impedance phase angle ) for a condition that meets
the requirements in
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
and
p
EQUATION123 V1 EN-US
in % for two- and three-pole faults
210
Test settings
Condition
V = 69.3 V, I = 0 A & ZF = 0°
Test point
Note:
Test angle
Table
24.
Equation 54
Z
x
×
------ - 100
=
X1
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£ (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
1MRK 511 403-UUS Rev. K
GUID-0FDCCF3B-63C5-463E-AD67-2AE3633E9CE9 v1
M14955-48 v7
Equation
52,
Equation 53
(Equation 52)
Bay control REC670
Commissioning manual

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