Parallel Voltage Regulation - ABB REG670 Commissioning Manual

Section 13
Testing functionality by secondary injection
13.10.3.8
264
= - ×
vl re vb re rline il re xline il im , ,
EQUATION2083-ANSI V1 EN-US
= - ×
vl im vb im , , xline il re rline il im
EQUATION2085-ANSI V1 EN-US
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
equation 114.
2
¦ V ¦ = (vl , re) + (vl , im)
L
EQUATION2087-ANSI V2 EN-US
4. Inject voltage for V
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
slightly higher then VSet + |(Rline+jXLine) · I
regulating voltage V
should be issued from the IED.
10. Reduce the injected voltage for V
confirm that the calculated value for load voltage is below VSet and a tap change
command is issued from the IED.

Parallel voltage regulation

Master follower voltage regulation
Generator protection REG670 2.2 ANSI and Injection equipment REX060, REX061, REX062
+ ×
, ,
- ×
, ,
2
equal to setting VSet.
B
is higher than VSet, and hence no tap change command
L
slightly below VSet + |(Rline+jXLine) · I
B
1MRK 502 073-UUS A
are according to
L
|. This will ensure that the
L
Commissioning manual
(Equation 112)
(Equation 113)
(Equation 114)
that is
B
| and
L
SEMOD175185-714 v2
SEMOD175185-716 v6