Delta H10E, Operation And Installation Manual

Page: 26 / 51

For response to a decrease in frequency, when a disturbance results in a
decrease in frequency below the continuous operation range (f
LLCO
), Delta
H9E inverter will increase the power output linearly with the decrease in
frequency until the lower limit frequency range (f
Pmax
) is reached. When a
disturbance results in a decrease in frequency that falls below f
stop-ch
, Delta
H9E inverter with energy storage will increase the power output level through
the grid-interactive port linearly with the decrease in frequency until f
Pmax
is
reached, the maximum discharge rate of the energy storage is reached, or the
state of charge of the energy storage is exhausted.
26
Active/Reactive Power Control