IEEE 2030.101:2018

Scope
This guide covers the design, installation, and monitoring of time synchronization systems in power utility substations. This includes time sources such as Global Positioning Satellite (GPS), and time distribution systems such as Inter-Range Instrumentation Group Format B (IRIG-B), Network Time Protocol (NTP) or Simple Network Time Protocol (SNTP), and IEEE Std C37.238¿¿¿ plus IEC/IEEE 61850-9-3. This guide assumes that the time source and the intelligent electronic device (IED) have accurate clocks.
Purpose
Time synchronization is now critical to the smart grid, with substations using legacy systems and new standards for network time synchronization, a guide is needed to help ensure adequate system design is undertaken to support the applications relying on accurate and reliable time
Abstract
New IEEE Standard - Active. The design, installation, and monitoring of time synchronization systems in power utility substations is covered. This includes time sources such as Global Positioning Satellite (GPS) and time distribution systems such as Inter-Range Instrumentation Group Format B (IRIG-B), Network Time Protocol (NTP) or Simple Network Time Protocol (SNTP), and IEEE Std C37.238¿¿¿. The time source and the intelligent electronic device (IED) are assumed to have accurate clocks.