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About the ramp rate limiter
To avoid rapid changes in the active power and reactive power output, the Ramp rate limiter feature allows the power generating system to follow a defined gradient to increase or decrease the active power output after receiving a new setpoint from the grid operator/third party.
The ramp rate limiter feature is available for active and reactive power control and is applied to the grid operator/third-party setpoint. The functions are described below.
Active power
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Ramp up |
The ramp rate configured for ramp up only applies to the new setpoint from the grid operator/third party if this increases the active power output. |
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Ramp up/Ramp down |
You can define separate ramp rates for increasing and reducing the active power output:
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Soft start |
A soft start ramp rate will be applied when the active power at the point of common coupling is ≤ 0 W. The ramp rate remains in effect until the new setpoint is reached. Example: If the active power is 0 W and the setpoint is 0 %, then:
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Activation |
Via the toggle on the user interface or via a Modbus command |
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Configuration of ramp rates |
Via the toggle on the user interface or via a Modbus command |
Reactive power
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Ramp |
Applies to the new setpoint from the grid operator |
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Activation |
Only via the toggle on the user interface |
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Configuration of ramp rates |
Only via the user interface |
Examples
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Setpoint grid operator input signal |
Output signal |
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Ramp rate limiter off |
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Ramp up |
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Ramp up/ramp down |
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Soft start |
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