Unity AI Insights: Active Power Flatline Flag Calculation

Last Modified on 2025-07-31 23:08:53 +0200

This calculation detects flatlines onfu_image.png to use as an input to Reduced AC Capacity Smart Events. The calculation runs once overnight on all inverters of a given PV site. It requires “day of” historical data.

image-20250529-150124.png

Calculation logic

  • Given a data frame or series of fu_image.png, calculate current_inter.pngfor every interval.

  • Look at a rolling window of default_window.pngintervals and calculate the max for each window. Note: If data is flatlined for length window.pngdata_diff.pngwill be ~0 for length window_one.png

  • If this value is less than diff.png mark as True. Else, False.

  • If True, mark all intervals within the window as True i.e. propagate backwards.

  • Filter for intervals where sun_height.png

Inputs

Signals

Segment Apcode

Mloc Apcode

CalcType

CalcPeriod

MType

Inverter

ActivePower

Final

SiteTR

Power

Site

SunHeightAngle

Calculated

SiteTR

Angle

Configuration Parameters

Parameter

Value

Notes

DEFAULT_WINDOW

4

min number of intervals that must be flatlined to be marked as flatlined

DEFAULT_DIFF_THRESHOLD

1

max interval-by-interval difference infu_image.pngwithin the window to be marked as flatlined

MIN_SUN_HEIGHT

10

only mark flatlines above min sun height

Outputs

Signals

Segment Apcode

Mloc Apcode

CalcType

CalcPeriod

MType

Unit

Inverter

ActivePowerFlatlineFlag

Calculated

siteTR

Flag

-

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