IEEE 519

IEEE 519
Title	IEEE 519
Status	active
Abbreviation	IEEE 519
Publisher	Institute of Electrical and Electronics Engineers
First published	1981
Latest revision	2014

IEEE 519

IEEE 519 is a technical standard published by the Institute of Electrical and Electronics Engineers that sets recommended practices and limits for harmonic control in electrical power systems; it is widely referenced in utility, industrial, and regulatory contexts involving alternating current distribution, transmission, and generation. The standard is used by engineers, planners, and regulators across utilities such as Pacific Gas and Electric Company, Con Edison, National Grid plc, equipment manufacturers like General Electric, Siemens, and organizations including Electric Power Research Institute and American Public Power Association to manage power quality and protection coordination.

Overview

IEEE 519 provides guidance on acceptable levels of harmonic voltage and current distortion for users such as industrial plants serving Steelworks or Semiconductor Manufacturing facilities, transmission providers like Independent System Operator (ISO) New England, and distribution utilities such as Duke Energy and Edison International. The document addresses interactions among sources including variable frequency drives, rectifiers, energy storage systems and rotating machines like synchronous condensers and induction generators, and it dovetails with equipment standards from Underwriters Laboratories and test procedures used by American National Standards Institute. Stakeholders such as Federal Energy Regulatory Commission staff, North American Electric Reliability Corporation planners, and regional bodies like California Energy Commission often cite it in interconnection agreements.

Scope and Objectives

The primary objective is to limit harmonic distortion to reduce equipment overheating, misoperation, and losses in assets owned by entities such as Consolidated Edison and Tokyo Electric Power Company, while enabling connection of contemporary loads from manufacturers like ABB and Schneider Electric. The scope covers voltage distortion at point of common coupling for systems operating at frequencies standardized by organizations like International Electrotechnical Commission and equipment rated to standards from National Electrical Manufacturers Association and Institute of Electrical and Electronics Engineers committees. It balances interests of independent generators such as GE Renewable Energy wind farms, industrial customers like ArcelorMittal, and transmission operators such as American Transmission Company.

Harmonic Distortion Limits and Measurement

IEEE 519 specifies numeric limits for total harmonic distortion and individual harmonic components referenced to system voltage and current, defining measurement practices with instruments comparable to those from Keysight Technologies and Fluke Corporation. Limits are expressed as percentages and per-unit values related to short-circuit ratio at the point of common coupling, considerations used by entities like Entergy Corporation and TransCanada for interconnection studies. Measurement intervals, windowing, and instrument accuracy are discussed in the standard in a manner adopted by testing laboratories such as Underwriters Laboratories and research groups at Massachusetts Institute of Technology and Pennsylvania State University.

Compliance and Implementation Practices

Implementing the standard involves contractual provisions in interconnection agreements between parties including Exelon generation owners and utilities like PG&E; mitigation options include passive and active filters from vendors such as Eaton and Toshiba and design changes at facilities like Boeing plants. Compliance procedures are integrated into planning tools used by Siemens PTI and ETAP software, and enforcement mechanisms appear in tariffs managed by regulators such as Public Utility Commission of Texas and Ofgem. Economic considerations and cost allocation for mitigation are often negotiated among stakeholders like Industrial Customers of Utilities and municipal utilities represented by American Public Power Association.

Impact on Power System Equipment and Operation

Adherence to harmonic limits reduces aging and failure rates of transformers supplied by manufacturers like Hitachi Energy and Mitsubishi Electric, limits nuisance tripping of protective relays from vendors such as Schweitzer Engineering Laboratories, and decreases losses in cables and motors used by corporations like Ford Motor Company and Caterpillar Inc.. It affects operation of distributed resources including photovoltaic power stations and combined heat and power plants, and informs design of substations employed by National Grid plc and TenneT Holding. Network studies by entities such as RWE and EDF demonstrate impacts on thermal loading, resonance risk, and system stability when non-linear loads proliferate.

History and Revisions

The standard originated in 1981 and has been revised to reflect technological change, with notable updates in the 1990s and the 2014 revision influenced by research at institutions like University of Illinois Urbana–Champaign and Imperial College London. Committees within IEEE Power & Energy Society and contributors from utilities including Southern Company and manufacturers such as ABB have guided amendments, responding to increased penetration of power electronics from firms like Rockwell Automation and large-scale inverter-based resources developed by Tesla, Inc..

International Adoption and Related Standards

IEEE 519 has influenced and been referenced alongside international standards from International Electrotechnical Commission such as IEC 61000 series, regional codes from European Committee for Electrotechnical Standardization, and national regulations implemented by agencies like Bureau of Indian Standards and Standards Australia. Many transmission operators and utilities in jurisdictions including Germany, Japan, Canada, Brazil, and South Africa incorporate its limits or equivalent criteria into grid codes and interconnection requirements, interacting with grid planning documents from organizations like ENTSO-E and Asia-Pacific Economic Cooperation energy working groups.

Category:Electrical power quality standards