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Understanding and Managing Total Harmonic Distortion in Modern Power Systems
This white paper explores the origins, calculation, and measurement of Total Harmonic Distortion (THD) in power distribution systems, emphasizing its increasing prevalence due to non-linear loads such as modern lighting and motor controls. It details how THD affects power quality, the risks it poses to equipment, and the importance of continuous monitoring and analysis to maintain system reliability and efficiency.
Key topics include:
- Introduction to Total Harmonic Distortion
- Linear vs. Non-Linear Loads
- Sources and Effects of Harmonic Distortion
- Measurement and Calculation of THD
- Impact of Harmonics on Power Systems
- Monitoring Tools and Harmonic Analysis
- Case Studies: Lighting and Motor Loads
Why utilities should care:
Rising non-linear loads amplify THD, threatening equipment longevity, power quality, and operational reliability. Proactive monitoring and analysis enable early detection of issues, support compliance, and optimize system performance to prevent costly failures.
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