P519 - Standard for Harmonic Control in Electric Power Systems
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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 reduces interference between electrical equipment. The voltage and current distortion limits in this standard 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 are directed to 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 standard 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 standard sets the quality of power that is to be provided at the point of common coupling. This standard does not cover the effects of radio-frequency interference; however, guidance is offered for wired telephone systems. The limits given in this standard 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 standard, are not necessarily valid at any other point in the power system. For this reason, the limits given in this standard are not intended to be used for the evaluation of equipment.
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