IEC Recommended MATLAB Computational Model for Voltage Fluctuation and Flicker Analysis

Based on the MATLAB computational model for voltage fluctuation and flicker analysis recommended by the International Electrotechnical Commission (IEC), we can calculate various parameters related to voltage fluctuations and flicker phenomena. The model typically implements algorithms for short-term flicker severity (Pst) and long-term flicker severity (Plt) calculations using weighting filters and statistical processing of voltage samples. These parameters help engineers better understand power system performance and develop appropriate response strategies during voltage fluctuation and flicker events. The implementation may include functions for RMS voltage calculation, human eye-brain response simulation, and percentile statistical analysis. While we can reference IEC standards to ensure the accuracy of our computational model and results, it's important to note that these standards often require licensing fees for full access. Therefore, in practical applications, engineers should evaluate whether IEC standard compliance is necessary based on project requirements and regulatory constraints. When implementing the model, attention must be paid to the correctness and applicability of the standard specifications, particularly regarding sampling rates, measurement durations, and threshold values for different power system configurations. The MATLAB code should properly handle signal preprocessing, including anti-aliasing filtering and windowing functions, to ensure accurate flicker measurement according to the IEC methodology.