This international standard, part of IEC 60255, is for synchronized phasor measurement systems in power systems. It defines a synchronized phasor (synchrophasor), frequency, and rate of change of frequency measurements of ac current and voltage signals in both steady-state and dynamic power system conditions. It describes time tag and synchronization requirements for measurement of all these quantities and specifies methods for evaluating these measurements for compliance with the standard. It defines a phasor measurement unit (PMU), which can be a stand-alone physical unit or a functional unit within another physical unit. This standard does not specify hardware, software or a method for computing phasors, frequency, or rate of change of frequency.
- Standard Committee
- PE/PSRCC - Power System Relaying and Control
- Status
- Active PAR
- PAR Approval
- 2025-11-04
- Superseding
- 60255-118-1-2018
Working Group Details
- Society
- IEEE Power and Energy Society
- Standard Committee
- PE/PSRCC - Power System Relaying and Control
- Working Group
-
C59_60255-118-1 - IEEE/IEC International Standard - Measuring relays and protection equipment - Part 118-1: Synchrophasor for power systems - Measurements
- IEEE Program Manager
- Vanessa Lalitte
Contact Vanessa Lalitte - Working Group Chair
- Kenneth Martin
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