Active Standard

IEEE/IEC 60255-118-1-2018

IEEE/IEC International Standard - Measuring relays and protection equipment - Part 118-1: Synchrophasor for power systems - Measurements

This 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. It describes time tag and synchronization requirements for measurement of all three of these quantities. It specifies methods for evaluating these measurements and requirements for compliance with the standard under both static and dynamic conditions. It defines a phasor measurement unit (PMU), which can be a stand-alone physical unit or a functional unit within another physical unit. This document does not specify hardware, software or a method for computing phasors, frequency, or rate of change of frequency.

Sponsor Committee
PE/PSRCC - Power System Relaying and Control
Learn More About PE/PSRCC - Power System Relaying and Control
Status
Active Standard
PAR Approval
2013-06-14
Superseding
C37.118.1-2011
Board Approval
2018-09-27
History
Published:
2018-12-19

Additional Resources

Downloads
60255-118-1-2018_downloads.zip

Working Group Details

Society
IEEE Power and Energy Society
Learn More About IEEE Power and Energy Society
Sponsor Committee
PE/PSRCC - Power System Relaying and Control
Learn More About PE/PSRCC - Power System Relaying and Control
Working Group
C37.118.1_WG - Synchrophasor Measurements for Power Systems
IEEE Program Manager
Malia Zaman
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Working Group Chair
Kenneth Martin

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C37.118.1-2011

IEEE Standard for Synchrophasor Measurements for Power Systems

Synchronized phasor (synchrophasor) measurements for power systems are presented. This standard defines synchrophasors, frequency, and rate of change of frequency (ROCOF) measurement under all operating conditions. It specifies methods for evaluating these measurements and requirements for compliance with the standard under both steady-state and dynamic conditions. Time tag and synchronization requirements are included. Performance requirements are confirmed with a reference model, provided in detail. This document 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 ROCOF.

Learn More About C37.118.1-2011

C37.118.1a-2014

IEEE Standard for Synchrophasor Measurements for Power Systems -- Amendment 1: Modification of Selected Performance Requirements

Modifications in this amendment include some performance requirements with related text updates to correct inconsistencies and remove limitations introduced by IEEE Std C37.118.1(TM)-2011. It was discovered that a few requirements were not achievable with the published models as was intended and others were extremely difficult to meet with available hardware. This amendment modifies requirements in Table 4 through Table 10. Text was modified to support the requirement modification. Testing described in 5.5.9 was clarified, and Table 11 (formerly Table 12) was modified to match. Annex C was modified to keep it consistent with the rest of the document.

Learn More About C37.118.1a-2014

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