scope:

This Publicly Available Specification (PAS) defines a methodology for power system domain experts to determine and describe their user requirements for automation systems, based on their utility business needs. This methodology was originally developed as part of the IntelliGrid Architecture developed by the Electrical Power Research Institute (EPRI), as a means to implement the "IntelliGrid vision" of the automated, self-healing, and efficient power system of the future. The IntelliGrid methodology is a subset of the science of systems engineering. Systems engineering methodology separates the concepts of "user requirements" from "technical specifications": user requirements define "what" is needed without reference to any specific designs or technologies, while technical specifications define "how" to implement the automation systems in order to meet the user requirements.