IEEE 859-2018
IEEE Standard Terms for Reporting and Analyzing Outage Occurrences and Outage States of Electrical Transmission Facilities
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About This Item
IEEE 859-2018 defines standard terms for reporting and analyzing outage occurrences and outage states of electrical transmission facilities. It provides a common technical language for describing how transmission equipment and systems are taken out of service, restored, or kept in a specific outage condition. This matters because consistent terminology supports clearer records, more reliable analysis, and better comparison of outage data across facilities and operating organizations.
What is IEEE 859-2018?
IEEE 859-2018 is a terminology standard focused on outage reporting for electrical transmission facilities. Rather than setting design requirements, it helps users apply consistent definitions when documenting outage events, outage states, and related operating conditions. In practice, this kind of standard supports structured analysis of transmission performance and helps reduce ambiguity in engineering, operations, and reliability records. It is especially useful where outages must be described precisely for review, tracking, or statistical evaluation.
Where is IEEE 859-2018 used?
This standard is typically used in transmission system operations, utility planning, and reliability reporting where outage records must be consistent and comparable. It is relevant to electrical transmission facilities, associated components, and monitoring workflows that track equipment availability or service interruptions. IEEE 859-2018 can also support internal maintenance documentation, outage investigations, and data collection for performance review. Its terminology is useful wherever teams need a common reference for reporting outage occurrences and outage states.
Why is IEEE 859-2018 important?
IEEE 859-2018 helps improve consistency in outage documentation, which is important for compliance, analysis, and operational decision-making. Clear terminology reduces misunderstandings when comparing outage events, reviewing reliability trends, or coordinating between engineering and operations teams. It can also support better data quality in records used for planning, performance assessment, and risk reduction. For organizations managing transmission assets, using a shared standard helps make outage reporting more precise and easier to audit.
- Standard outage terminology
- Transmission facility reporting
- Outage occurrence analysis
- Outage state definitions
- Consistency in reliability records
- Publication Date: 2019
- Standard Status: Active
- Publisher: IEEE
- Subject: Components, Circuits, Devices and Systems; Power, Energy and Industry Applications; Fields, Waves and Electromagnetics
- Official IEEE: Doi link
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