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Table 1 (IEEE 519-2022, pg.17) voltage distortion limits
| Bus voltage V at PCC | Individual harmonic (%) | Total harmonic distortion THD (%) |
|---|---|---|
| V ≤ 1.0 kV | 5.0 | 8.0 |
| 1 kV < V ≤ 69 kV | 3.0 | 5.0 |
| 69 kV < V ≤ 161 kV | 1.5 | 2.5 |
| 161 kV < V | 1.0 | 1.5* |
What is the limit of harmonic?
In music theory, limit or harmonic limit is a way of characterizing the harmony found in a piece or genre of music, or the harmonies that can be made using a particular scale. The term limit was introduced by Harry Partch, who used it to give an upper bound on the complexity of harmony; hence the name.
What is voltage harmonics?
In an electric power system, a harmonic of a voltage or current waveform is a sinusoidal wave whose frequency is an integer multiple of the fundamental frequency. Harmonic frequencies are produced by the action of non-linear loads such as rectifiers, discharge lighting, or saturated electric machines.
What is IEEE standards for harmonics?
IEEE Std 519-1992, IEEE Recommended Practices and Requirements for Harmonic Control in Electric Power Systems (IEEE 519) [1], provides a basis for limiting harmonics. This document does an excellent job of defining the limits but there are some application issues that require the reader to use his or her judgment.
