, , , ,vl re vb re rline il re xline il im= - × + ×
EQUATION2083-ANSI V1 EN-US (Equation 112)
, , , ,vl im vb im xline il re rline il im= - × - ×
EQUATION2085-ANSI V1 EN-US (Equation 113)
where:
vb is the complex value of the busbar voltage
il is the complex value of the line current (secondary side)
rline is the value of the line resistance
xline is the value of the line reactance
For comparison with the set-point value, the modulus of U
L
are according to
equation 114.
¦ V
L
¦ = (vl , re)
2
+ (vl , im)
2
EQUATION2087-ANSI V2 EN-US (Equation 114)
4. Inject voltage for V
B
equal to setting VSet.
5. Inject current equal to rated current I2Base.
6. Confirm on the local HMI that service values for bus voltage and load current are
equal to injected quantities.
7. Confirm that the calculated value for load voltage, displayed on the local HMI, is
equal to that derived through hand calculations.
8. When setting OperationLDC set to Enabled, the voltage regulation algorithm
uses the calculated value for load voltage as the regulating quantity to compare
against VSet and the voltage deadband limits VDeadband and VDeadbandInner.
9. While injecting rated current I2Base into the IED, inject a quantity for V
B
that is
slightly higher then VSet + |(Rline+jXLine) · I
L
|. This will ensure that the
regulating voltage V
L
is higher than VSet, and hence no tap change command
should be issued from the IED.
10. Reduce the injected voltage for V
B
slightly below VSet + |(Rline+jXLine) · I
L
| and
confirm that the calculated value for load voltage is below VSet and a tap change
command is issued from the IED.
13.10.3.8 Parallel voltage regulation
SEMOD175185-714 v2
Master follower voltage regulation
SEMOD175185-716 v6
Section 13 1MRK 502 073-UUS A
Testing functionality by secondary injection
264 Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
Commissioning manual
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