IEEE 1646-2004

IEEE 1646-2004 defines communication delivery time performance requirements for electric power substation automation, helping engineers assess how quickly messages must move across substation systems. In power, energy and industry applications, timing can affect monitoring, control, and event handling, so this standard provides a clear basis for evaluating delivery performance. IEEE 1646-2004 is useful for aligning system expectations with operational needs where communication latency and consistency are important.

About IEEE 1646-2004

This technical document addresses the time performance of communication delivery within electric power substation automation environments. It focuses on requirements that help define acceptable message delivery timing, which is important when coordinating protection, control, and supervisory functions. IEEE 1646-2004 supports a more consistent approach to specifying and reviewing communication performance, especially where substation systems must exchange information predictably. For buyers and engineers, it is a reference for understanding delivery-time expectations in a specialized power-system context.

Where is IEEE 1646-2004 used?

This standard is typically relevant in electric power substations and related automation systems where communication timing affects operational behavior. It may be used when specifying or reviewing substations networks, automation devices, relay communications, and control interfaces that support monitoring and switching functions. IEEE 1646-2004 is also useful in engineering workflows that compare vendor equipment or system designs against defined delivery-time expectations. In practice, it helps keep substation communication performance aligned with the demands of power-system operations.

Importance in practice

In practice, IEEE 1646-2004 helps reduce uncertainty around communication timing in substation automation projects. Clear delivery-time requirements support procurement decisions, system design, testing, and acceptance checks by giving teams a shared performance target. That can improve consistency across equipment and help limit operational risk in time-sensitive power applications. IEEE 1646-2004 is especially valuable when communication delays need to be understood and controlled as part of overall system performance.

• Electric power substation automation
• Communication delivery time requirements
• Protection and control system coordination
• Performance specification and testing
• Power, energy and industry applications