Delta RPI-H3 Service Manual download pdf (Page 26)

6. Active/Reactive Power Control and

Low Voltage Ride Through (Optional)

There are 2 settings for active power and 4 settings for reactive power control

based on the requirement from network operator.

6.1 Active Power Control

6.1.1 Power Limit

Users can reduce inverter output power by set percentage of actual or rated

power.

6.1.2 Power vs. Frequency

According to VDE-AR-N 4105 (5.7.3.3)：

At frequencies between 50.2Hz and 51.5Hz, all adjustable power generation

systems shall reduce (for frequency increase) or increase (for frequency

decrease) the active power Pm generated instantaneously (at the time of

exceeding the mains frequency 50.2Hz; freezing the value on the current level)

with a gradient of 40% of Pm per Hertz).

According to CEI 0-21 (8.5.3.2)：

Within a frequency range from 50.3Hz to 51.5Hz, all adjustable production

plants equipped with static converters have to be able to reduce the currently

generated active power in case of an increase of the frequency with a variable

droop of 2% to 5% with a default value of 2.4% (with corresponds to a power

gradient of 83.3%/Hz).

User can set all necessary settings to meet the requirements from network

operator. Please refer to actual Power vs. Frequency for the settings

procedure.

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Delta RPI-H3 Service Manual Page 26