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Understanding Flicker Standards: Ensuring Accurate Power Quality Measurement
This white paper reviews the evolution of flicker standards, including IEEE 141, IEEE 1453, and IEC 61000-4-15, and explains how modern measurement instruments, such as PMI recorders, utilize these standards to accurately assess and address voltage fluctuation issues that cause light flicker. The paper details the theory behind flicker, its causes, and the statistical methods used to quantify short-term (Pst), long-term (Plt), and instantaneous (IFL) flicker, highlighting the importance of standardized measurement for effective power quality management.
Key topics include:
- Introduction to Flicker and Its Impact
- Overview of Major Flicker Standards
- Flicker Theory and Human Perception
- Causes of Flicker in Power Systems
- Flicker Measurement Techniques
- Flickermeter Functional Breakdown
- Statistical Analysis of Flicker Data
Why utilities should care:
Accurate flicker measurement enables effective identification and mitigation of power quality issues, reducing customer complaints and equipment wear. Standardized methods ensure consistent data, facilitating regulatory compliance and informed decision-making for system improvements.
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