A P28 voltage flicker study is a critical analysis conducted to evaluate the impact of voltage flicker on power quality within electrical power systems. It assesses voltage fluctuations caused by varying loads and identifies potential sources of flicker, such as large motor starting, arc furnaces, or other intermittent loads. The primary objective is to ensure compliance with IEEE Standard 1453-2015 (P28), which provides guidelines for assessing voltage flicker and its effects on sensitive equipment and human comfort.