flickermeter

A flickermeter is an electronic instrument used to measure and analyze flicker, a visual phenomenon characterized by rapid, repeated fluctuations in light intensity. Flicker can be caused by various electrical disturbances, such as fluctuating voltage or load changes in power systems, and can lead to visual discomfort or health issues in sensitive individuals.

The primary function of a flickermeter is to quantify flicker severity through specific parameters, most notably the short-term flicker severity index (Pst) and the long-term flicker severity index (Plt). These indices provide standardized metrics to evaluate the impact of voltage fluctuations on human perception. Flickermeters typically operate by analyzing voltage signals or luminous intensity variations, often incorporating filtering and signal processing techniques to accurately extract flicker characteristics.

Flickermeters are widely used in power quality assessment, manufacturing, and research to ensure electrical systems comply with standards such as IEC 61000-4-15, which defines flicker measurement methods. They facilitate the detection of problematic sources of electrical disturbance, assisting engineers in troubleshooting and designing more stable power systems.

Modern flickermeters can be portable or integrated into grid monitoring networks. They often feature digital displays, data logging capabilities, and communication interfaces for remote monitoring and analysis. The accurate measurement of flicker levels assists utility companies and industrial facilities in minimizing flicker-induced issues, ensuring compliance with regulatory standards, and improving overall electrical system stability.