This document provides definitions of electric power to quantify the flow of electrical energy in single-phase and three-phase circuits under sinusoidal, non-sinusoidal, balanced, and unbalanced conditions.
- Standard Committee
- PE/PSIM - Power System Instrumentation and Measurements
- Status
- Inactive-Reserved Standard
- PAR Approval
- 2006-12-06
- Superseded by
- 1459-2025
- Superseding
- 1459-2000
- Board Approval
- 2010-02-02
- History
-
- Published:
- 2010-03-19
- Inactivated Date:
- 2021-03-25
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/PSIM - Power System Instrumentation and Measurements
- Working Group
-
Nonsinus - WG on Nonsinusoidal Situations: Effects on Meter Performance and Definitions of Power
- IEEE Program Manager
- Sandra Maru
Contact Sandra Maru - Working Group Chair
- Alexander Emanuel
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.
1459-2025
IEEE Standard Definitions for the Measurement of Electric Power Quantities Under Sinusoidal, Nonsinusoidal, Balanced, or Unbalanced Conditions
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://standards.ieee.org/wp-content/uploads/2025/06/1459-2025_errata.pdf
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