ABB Relion 670 Series Commissioning Manual page 147

1MRK 506 371-UUS E
•
•
•
The phase angle of the test voltages is equal to:
• arctan (
• arctan (
• Symmetric three-phase current, where the current is the summation of two currents that have
the same magnitude, but different frequencies.
I
50
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The first current I
phase angle 0º.
The second current I
the starting time of the test) and frequency:
•
•
Verifying the settings by secondary injection
It is advised to connect the analog output channels of the function block OOSPPAM to the internal
disturbance recorder (and in particular to the function block A4RADR) in order to perform a better
analysis of the tests.
If the device is in test mode, the recording of the disturbances are enabled by the setting in Main
menu/Settings/IED Settings/Monitoring/Disturbance report/DisturbanceReport/DRPRDRE:1:
set the parameter
Line distance protection REL670
Commissioning manual
the point RE (R , X
FwdR FwdX
a point which is related to the parameter
the point SE (R , X
RvsR RvsX
ForwardX / ForwardR ) for tests in the quadrant 1 and 2 of the R-X plane
ReverseX / ReverseR ) -180° for tests in the quadrant 3 and 4 of the R-X plane
I 20918
t
I A
10459
= = = =
tf
2 2
has frequency 50 Hz, magnitude 10459 A (that is, 1.162 A secondary) and
50
has magnitude 10459 A (that is, 1.162 A secondary), phase angle 180º (at
tf
49.5 Hz for the test as generator in the quadrant 1 and 2 of the R-X plane
50.5 Hz for the test as generator in the quadrant 3 and 4 of the R-X plane
When the trajectory of the impedance, that is seen by the protection function,
traverses the lens characteristic then a pole slipping is detected. The present
procedure avoids tests of points of the line SE-RE that are too close to the R-axis
because in that case the voltage is close to zero and, therefore, the impedance may
approach a not defined quantity 0/0.
The accuracy of the impedance reach is ±2% of the base impedance; that is
considered while evaluating the test results.
For the test as motor the frequency current may have 50.5 Hz in the quadrant 1 and
2 of the R-X plane and 49.5 Hz in the quadrant 3 and 4.
OpModeTest to On .
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)
ReachZ1 (boundary between zone 1 and zone 2)
)
Testing functionality by secondary injection
(Equation 16)
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Section 11
141