IEEE 1159.3 PQDIF Task Force


IEEE Std 1159.3-2019 was published on 2019 May 1 and is valid until 2029. This is IEEE's recommended practice for exchanging data between monitors and software using IEEE Power Quality Data Interchange Format (PQDIF).

IEEE Std 1159.3-2003 provided the industry with the first specification for PQDIF and was valid for five years. It was reaffirmed in 2009.

Between 2014 and 2018, the IEEE P1159.3 Task Force completed the following changes to IEEE 1159.3:

The physical structure of PQDIF remains unchanged between IEEE Std 1159.3-2003 (2008) and IEEE Std 1159.3-2019, making PQDIF both backward and forwards compatible. Changes to the logical structure to support new capability are in the form of additional tag and ID values. This allows software that reads PQDIF to maintain compatibility by simply ignoring unrecognized tag and ID values.

IEEE Std 1159.3-2019 is available for purchase from the IEEE Standards website.


Recommended Practice for Power Quality Data Interchange Format (PQDIF)


IEEE 1159.3 provides the power quality industry with the specification for PQDIF, which is an open and accepted data format standard for the transfer of power quality data between instruments and computers. This transfer standard allows the processing and analysis of power quality measurements using multi-vendor and multi-device data. Wider acceptance of PQDIF as a power quality data transfer format will significantly add to the value of power quality monitoring and open new opportunities for the resolution, planning, and understanding of power quality activities. Being able to exchange data between software systems will allow other functions needed in a power quality monitoring campaign, including validation, trending, comparison, overlay, and more.

Task Force Officers

Chair Vice Chair Secretary
Daniel Sabin
Schneider Electric
800 Federal Street
Andover, Massachusetts 01810
Kevin Kittredge
Electrotek Concepts
100 Cummings Center, Suite 229C
Beverly, Massachusetts
Joseph Grappe
Duke Energy Progress
1418 Mechanical Boulevard
Garner, North Carolina 27529

Documents Library

The task force maintains a PQDIF Software Developers Kit (SDK), source code, example files, overview documentation, and test programs in a Documents Library.

Meeting Information

The task force normally meets with the working groups and task forces of the IEEE Power Quality Subcommittee. See the PQ Subcommittee's next Meeting Schedule for more information.

Submit Change Requests

If you wish to submit a change or addition to IEEE 1159.3, send an email.


IEEE | IEEE Power & Energy Society
IEEE PES Transmission and Distribution Committee | IEEE PES Power Quality Subcommittee

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This page is maintained by Dan Sabin and was last updated on 2020 August 31.