Qv Monitoring - Woodward easYgen-2000 Series User Manual

ID Parameter
4989 Mns. decoupl.
by time-dep.
volt.
4.4.2.9

QV Monitoring

General notes
37535B
CL Setting range Description
[Default]
No The control unit does not automatically reset the alarm when the fault condi‐
tion is no longer detected.
The alarm must be acknowledged and reset by manually pressing the appro‐
priate buttons or by activating the LogicsManager output "External acknowl‐
edgement" (via a discrete input or via an interface).
2 On Time-dependent voltage monitoring does cause a decoupl-ing.
[Off] Time-dependent voltage monitoring does not cause a de-coupling.
In case of mains undervoltage some grid codes require a special
monitoring function to avoid the import of inductive reactive power
at the mains interchange point. The monitoring function measures
close to the generator. For this reason the QV monitoring is a func‐
tion of generator voltage and generator reactive power. To prevent
malfunction, a minimum current (parameter
be configured.
QV monitoring is triggered if the following conditions are fulfilled:
(Refer to Fig. 81 for details)
QV monitoring is configured to "On" (parameter
n
3292 Ä p.
Measured reactive power is higher than the configured "Reac‐
n
tive power threshold" (parameter
Measured average current is higher than the configured "Min‐
n
imum current" (parameter
Measured voltages are below the configured "Limit under‐
n
voltage" (parameter
As a result Timer 1 and Timer 2 are starting. If the delay time
"Delay step 1" (parameter
csManager 07.29 becomes TRUE and the corresponding alarm
message "QV monitoring 1" is indicated. If the delay time "Delay
step 2" (parameter
07.30 becomes TRUE and the corresponding alarm message "QV
monitoring 2" is indicated.
If parameter "Mains decoupling by QV" (parameter
is configured to "On" the decoupling function is assigned to "Delay
step 1" (parameter
easYgen-2200/2500 | Genset Control
Configure Monitoring > Mains > QV Monitoring
150)
3287 Ä p.
3285 Ä p.
3283 Ä p.
3284 Ä p. 151) has exceeded, LogicsManager
3283 Ä p. 151).
The LogicsManager command flags 07.29 and 07.30
can be additionally used to cause other actions
according to the corresponding regulations of the grid.
Configuration
3287 Ä p. 150) must
3291 Ä p. 150)
150)
150)
151) has exceeded, Logi‐
3296 Ä p. 151)
149