Title: IEEE P519 – Standard for Harmonic Control in Electric Power Systems
Scope:
This standard establishes goals for the design of electrical systems that include both linear and nonlinear
loads. The voltage and current waveforms that may exist throughout the system are described, and waveform
distortion goals for the system designer are established. The interface between sources and loads is described
as the point of common coupling and observance of the design goals will reduce interference between electrical equipment.
The voltage and current distortion limits in this standard shall apply at the user point of common coupling
(PCC) to overall installation containing harmonic producing loads (nonlinear equipment). Users are directed
to other applicable standards such as IEEE 1547 or IEEE 2800 for current distortion limits of inverter-based
resources (IBR) installations. Until IEEE 2800 is published, users shall continue to use footnote “c” under
Tables 2 through 4 in this standard for IBR connected to transmission systems. If an installation has a mix
of harmonic producing loads and IBR at the same facility, users are directed to use Figure 1 in this document
to determine whether IEEE 519 limits apply at the PCC.
This standard addresses steady-state limitations. Transient conditions exceeding these limitations may be
encountered. This document sets the quality of power that is to be provided at the point of common coupling.
This document does not cover the effects of radio-frequency interference; however, guidance is offered for
wired telephone systems.
The limits given in this document are based on assumptions which are technically justifiable at the PCC
between the system owner/operator and user. These assumptions, and therefore the limits in this document,
are not necessarily valid at any other point in the power system. For this reason, the limits given in this
document are not intended to be used for the evaluation of equipment.