Remote power limit

A remote power limit is a cap on real power sent to the plant from outside. It is given as a fraction of nameplate maximum real power, in per-unit. Plant or solar controllers can also calculate a real power limit for the solar assets and send it to them in watts. In monitoring data, the daily power curve has a flat top. Output stays fixed and does not rise with irradiance. Check first for an active power limit command or setpoint in the controller before you look for a hardware fault. Leave limited intervals out of any performance analysis, because the output during those intervals does not reflect the weather. Where a battery is involved, an alert can flag that the requested real power is above nominal power or above the operator limits. That alert means the setpoint was capped and could not be fully met.

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• sentence 1: support check: partial - Passage gives a power limit as a percentage of nameplate max real power in pu, but doesn't say it is a cap sent from outside the plant.
• sentence 4: support check: partial - Passage supports excluding saturated/limited data from modeling, but nothing about checking controller setpoints before hardware faults. -->