The Integrated Energy and Communication Systems Architecture
Volume III:
Models
EPRI Project Manager
Joe Hughes
Cosponsor
Electricity Innovation Institute Consortium for Electric Infrastructure to Support a Digital Society (CEIDS)
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THE INTEGRATED ENERGY AND COMMUNICATION SYSTEMS
ARCHITECTURE, EPRI,
The breadth of the Integrated Energy and Communications Systems Architecture (IECSA) is enormous – spanning from the complex interactions of market trading to real time, self-healing power system control to the emerging market of home automation – all needing to be linked through a robust, integrated communication system. To accomplish this, the power system will need to be supported by an equally robust and self-healing communications and automation infrastructure; however, building such large-scale distributed information processing systems is not easy. It is a very complex task to design an architecture that reconciles requirements of an industry with the complexities of distributed processing systems.
There are limits to human ability to understand such complexity and to solve large sets of system equations. The problem must be broken down or divided into a series of smaller problems that can be solved. Modeling is one of the proven and well-accepted engineering techniques that simplify the system, so that we can better understand the system being developing. System simplification is achieved through the introduction of levels of abstraction, which allow the modeler to focus on one particular aspect of the system at a time. [1]
The scope and purpose of Volume III of the IECSA is to outline the technical details behind the development of the IECSA model. This volume will present to the reader the following topics:
· Basic modeling concepts used to capture the industry requirements.
· Guide to Notation used to express the modeling concepts.
· Definition of basic rules used to document the architecture.
· Guide to understanding the structure and organization of the content within the model.
The IECSA model captures the collective industry requirements as defined by project stakeholders (see list of contributing stakeholders in Volume II Appendix B). These requirements have been collected using the process outlined in the stakeholder engagement plan (Volume II Appendix A) and distilled into the abstract structural and behavioral modeling elements. Information on the architectural analysis processes may be found in Volume IV. Future and follow-on projects may serve to enhance the richness and completeness of these requirements and supporting modeling elements.
Architecture must evolve over time to reflect the new
business needs and technological approaches.
It is the recommendation of the IECSA team that the overall enterprise
architecture and intermediate work product developed during the IECSA project
(processes, templates, tools, and recommendations) serve as the basis for
future projects. The IECSA team has made significant achievements in the
application of standards based systems engineering methodologies towards the
definition of the Enterprise Architecture. This architecture will provide
significant benefit to improved system management in support of business
requirements, at lower cost, faster time-to-market, and increased technical
ability. That is, the benefits of the enterprise architecture can be summed up
using three words: [2]
· Better. Working towards a common business vision and common technical infrastructure.
· Faster. Significant issues have been previously thought out.
· Cheaper. Don’t reinvent the wheel every time a new system is built.
Where the