V
rated
: Rated Voltage
Q
rated
: Rated Reactive Power
Regulation: Isochronous
Regulation: With droop
V
real
0.98 x V
rated
V
rated
Q
rated
2
Q
rated
0
Droop
Q
{{
Fig. 172:
Voltage controller - behavior with and without droop, diagram
The resulting voltage setpoint is calculated as follows: V'Set = VSet - (Qreal * (Vrated *
droop factor) / Qrated)
Function Droop Tracking
The droop tracking for frequency/voltage control is implemented such that when the
control is switched to frequency/voltage control with droop the frequency/voltage real
value does not change at the current active/reactive load. This is provided by pre-
calculating a setpoint offset, which is needed to hold rated frequency/voltage at present
load.
This is a feature in applications where for example the load sharing over communication
interface gets lost and the number of generators remains the same.
Droop Tracking On/Off
The easYgen allows disabling the droop tracking for frequency and voltage generally. This
makes sense in applications where the number of generators can vary during running in
droop mode.
Load sharing in Droop mode On/Off
Multiple easYgens are load sharing under each other, if they run islanded from mains or
they control export/import power at a common interchange point. For dynamic reasons it
makes sense to disable the load sharing, when the easYgens running in droop or can fall
into droop mode (Missing member case).
340
easYgen-3000XT Series
B37574
4 Configuration
4.4.4.3.9 Droop
Released