Completing The Test; Directional Underpower Protection Guppdup; Verifying The Settings - Hitachi RED670 Commissioning Manual

Section 11
Testing functionality by secondary injection
NO TRIP signal should appear due to symmetrical condition.
14. Deactivate the CLOSECMD. Decrease one current with 120% of the current unsymmetrical
level compared to the other two phases. Activate CLOSECMD and measure the operating time
of the CCPDSC protection.
Use the TRIP signal from the configured binary output to stop the timer.
15. Deactivate the CLOSECMD. Decrease one current with 80% of the current unsymmetrical level
compared to the other two phases. Activate CLOSECMD.
NO TRIP signal should appear.
11.5.11.2

Completing the test

Continue to test another function or end the test by changing the TESTMODE setting to Off. Restore
connections and settings to the original values, if changed for testing purposes.
11.5.12

Directional underpower protection GUPPDUP

Prepare the IED for verification of settings as outlined in section
section
11.5.12.1

Verifying the settings

The underpower protection shall be set to values according to the real set values to be used.
The test is made by means of injection of voltage and current where the amplitude of both current
and voltage and the phase angle between the voltage and current can be controlled. During the test,
the analog outputs of active and reactive power shall be monitored.
1. Connect the test set for injection of voltage and current corresponding to the mode to be used
in the application. If a three-phase test set is available this could be used for all the modes. If a
single-phase current/voltage test set is available the test set should be connected to a selected
input for one-phase current and voltage.
Table 39:
Set value: Mode
L1, L2, L3
Arone
PosSeq
L1L2
Table continues on next page
172
"Preparing for test" in this chapter.
Calculation modes
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Formula used for complex power calculation
* *
= × + ×
S U I U I
L 1 L 1 L 2 L 2
EQUATION1697 V1 EN-US
*
= × - ×
S U I U
L L 1 2 L 1 L L 2 3
EQUATION1698 V1 EN-US
*
= × ×
S 3 U I
PosSeq PosSeq
EQUATION1699 V1 EN-US
* *
= × -
S U ( I I )
L L 1 2 L 1 L 2
EQUATION1700 V1 EN-US
1MRK 505 378-UEN Rev. K
"Requirements" and
*
+ ×
U I
L 3 L 3
*
I
L 3
Line differential protection RED670
Commissioning manual
SEMOD55625-106 v4
SEMOD175027-3 v5
SEMOD175027-7 v7
(Equation 83)
(Equation 84)
(Equation 85)
(Equation 86)