IEEE C37.238-2011
IEEE Standard Profile for Use of IEEE 1588 Precision Time Protocol in Power System Applications
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About This Item
IEEE C37.238-2011 is a technical standard that defines a profile for using IEEE 1588 Precision Time Protocol in power system applications. It helps align time synchronization requirements across components, circuits, devices, and systems where accurate timing supports monitoring, control, and event correlation. For engineering teams working with utility and industrial power networks, this standard provides a focused framework for consistent implementation and interoperability.
What is IEEE C37.238-2011?
IEEE C37.238-2011 specifies how IEEE 1588 Precision Time Protocol should be applied in power system environments. Rather than describing the protocol in general terms, it narrows the scope to a profile intended for electrical power applications, where synchronized time is often needed for data comparison, disturbance analysis, and coordinated system operation. As a profile standard, it is used to guide implementation choices and improve consistency across equipment and designs that rely on common timing behavior.
Where is IEEE C37.238-2011 used?
This standard is typically used in power system automation, substation equipment, and other control environments where precise time alignment is important. It may be relevant to relays, monitoring devices, measurement systems, and communication infrastructure supporting grid operations or industrial power control. IEEE C37.238-2011 is especially useful where multiple devices must share a common time reference for sequence-of-events records, disturbance recording, and synchronized measurements within power and energy applications.
Why is IEEE C37.238-2011 important?
IEEE C37.238-2011 matters because time synchronization can directly affect the reliability and usefulness of power system data. A defined profile helps reduce implementation differences, support procurement decisions, and improve confidence in testing and integration. For organizations that depend on synchronized measurements or event logs, the standard can help limit compatibility risks and support more consistent performance across vendors and system designs. Since this edition is superseded, it is also useful as a reference point in legacy or transition projects.
- IEEE 1588 profile for power systems
- Time synchronization guidance
- Substation and grid applications
- Interoperability across devices
- Legacy reference document
- Publication Date: 2011
- Standard Status: Superseded
- Publisher: IEEE
- Subject: Power, Energy and Industry Applications; Components, Circuits, Devices and Systems
- Official IEEE: Doi link
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