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Uncovering the Hidden Impacts of Low Energy Lighting on Power Quality
This white paper examines the shift from incandescent to CFL and LED lighting following federal efficiency mandates, focusing on the resulting changes in power quality. Through waveform analysis and one-hour monitoring of each lamp type, the study reveals that while energy consumption drops significantly, CFLs and LEDs introduce higher harmonic distortion and lower power factor compared to traditional bulbs. These changes can increase VAR demand and stress on distribution infrastructure, potentially leading to higher operational costs and equipment wear.
Key topics include:
- Introduction: Legislative Background and Lighting Evolution
- Test Methodology and Initial Conditions
- Waveform Analysis of Incandescent, CFL, and LED Lamps
- Harmonic Distortion and Power Factor Findings
- Implications for Electrical Distribution Systems
Why utilities should care:
Understanding the trade-offs between reduced energy consumption and increased harmonic distortion is critical for maintaining grid reliability, managing transformer loading, and controlling operational costs as lighting technologies evolve.
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