ABB Relion 650 Series REL650, Руководство по вводу в эксплуатацию

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Table 13: 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 Z F Test angle
• Z F arctan[(X0 + 2 · X1) / (R0 + 2R1)] For single-phase faults
• Z
F
arctan(X1/R1) For two-phase faults
6.11.2.1 Measuring the operate limit
1.
Set the test point (|Z| fault impedance and Z
F
impedance phase angle ) for a
condition that meets the requirements in table 13 .
2. Subject the IED to healthy normal load conditions for at least two seconds.
3. Apply a fault condition.
Check that the distance-to-fault value displayed on the HMI complies with
equations
18 , 19 and 20
p
Z
x
X1
-------
100
×
=
EQUATION123 V1 EN
(Equation 18)
in % for two- and three-pole faults
x
3 Z
p 100
X0 2 X1
×
= ×
+ ×
EQUATION124 V1 EN
(Equation 19)
in % for single-phase-to-ground faults
p
3 Z
×
x
X0 2 X1 XM
± ×
+
---------------------------------------------
100
×
=
EQUATION125 V1 EN
(Equation 20)
in % for single-phase-to-ground faults with mutual zero sequence current.
1MRK 506 331-UUS A
Section 6
Testing functionality
141
Commissioning Manual