Guide for Applying Harmonic Limits
on Power Systems
Prepared by the P519A Task Force
of the
Harmonics Working Group (IEEE PES T&D Committee)
and SCC22 - Power Quality
INTRODUCTION AND SCOPE
IEEE Standard 519-1992, IEEE Recommended Practices and Requirements for Harmonic Control in Electrical Power Systems, provides procedures for controlling harmonics on the power system along with recommended limits for customer harmonic injection and overall power system harmonic levels. This document provides example applications of the procedures and limits in IEEE 519-1992.
The following are specific objectives for this guide:
- Provide general harmonic evaluation procedures for different classes of customers (industrial, commercial, residential) and for the application of equipment on the utility system.
- Illustrate methods for evaluating harmonic levels at the point of common coupling (PCC). Examples should illustrate the concepts of the PCC, direction of harmonic current flow, the average maximum demand load current, the short circuit ratio (SCR), and the total demand distortion (TDD).
- Provide examples of measurement procedures for evaluating harmonic voltages and currents at the PCC. The measurement procedures should address the time variations and the statistical characteristics of the harmonic levels.
- Illustrate evaluation of harmonic levels for existing and new customers.
- Illustrate methods of harmonic control at the customer level and on the utility system. Describe possible concerns for filter applications and possible interaction with other customers.
Last updated January 24, 1999 by Erich W. Gunther