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Understanding and Applying TDD Limits for IEEE 519:2014 Compliance
This white paper explores the significance of Total Demand Distortion (TDD) in the context of IEEE 519:2014, detailing its calculation, measurement, and practical implications for power quality. It explains how TDD, normalized to maximum demand current, provides a more accurate indicator of potential voltage distortion than Total Harmonic Distortion (THD) alone. The paper also outlines the steps for configuring monitoring equipment and interpreting TDD data to ensure compliance with IEEE 519 limits.
Key topics include:
- Introduction to IEEE 519:2014 and Harmonic Distortion
- Defining Total Demand Distortion (TDD)
- Comparing TDD and THD
- Configuring Recorders for TDD Measurement
- Using ProVision for TDD Data Analysis
- Applying IEEE 519 TDD Limits
Why utilities should care:
Maintaining TDD within IEEE 519 limits ensures reliable voltage quality, minimizes equipment stress, and supports regulatory compliance. Accurate TDD monitoring helps identify problematic loads, optimize system performance, and reduce the risk of costly power quality issues.
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