Statistical Flicker Level Analyzer
Perform statistical analysis of instantaneous flicker level signal
The Statistical Flicker Level Analyzer app computes the short-term flicker severity (Pst) and long-term flicker severity (Plt) and displays the cumulative probability function (CPF) of an instantaneous flicker level signal (S5 signal).
You must have a Control System Toolbox™ license to use the Statistical Flicker Level Analyzer app.
Open the Statistical Flicker Level Analyzer App
MATLAB® command prompt: Enter
Digital Flickermeter block: Click Open statistical analysis
Short-term interval (Tst) — Short-term interval value
IEC Standard = 600 s (default) | Custom value (s)
When you select IEC standard = 600 s, the short-term interval observation period is 10 minutes (600 seconds). This setting corresponds to the time specified in the IEC 61000-4-15 standard.
Select Custom value (s) to specify the short-term interval observation period, in seconds. The default value is 300.
N — Number of short-term intervals
1 (default) | positive integer
Number of short-term intervals used to measure the long-term flicker severity (Plt).
Start time (s) — Analysis start time
0 (default) | positive scalar
Time of the beginning of the observed period, in seconds.
Number of classes — Number of classes
256 (default) | positive integer
Number of classes that are used by the tool to compute the cumulative probability function of the instantaneous flicker level.
Load — Load S5 signal
Load the S5 signal into the app. Choose between From Workspace and From file.
Help — Open documentation
Open the documentation page.
Compute — Compute cumulative probability function and flicker levels
Compute the percentiles P0.1s, P1s, P3s, P10s, and P50s, which are the flicker levels exceeded for 0.1%, 1%, 3%, 10%, and 50% of the time during the observed period. Computes the short-term flicker severity (Pst) and long-term flicker severity (Plt) and displays the cumulative probability function (CPF) of the S5 signal.