1.1.2 Applying Model Based Systems Engineering approach to Smart Grid Software Systems Security Requirements

Smart Grid Systems are a classic example of a System of Systems. Smart Grid brings intelligence to the existing electric grid by integrating various software and devices from domains [1] such as Transmission, Distribution, Customer, Bulk Generation, Operations, Markets and Service providers. Security is very critical both from a reliability and compliance standpoint. Smart Grid as a System of Systems contains various Software Systems that provide the necessary intelligence and integration. Therfore building security within software systems is very critical as opposed to bolt on solution that is often deferred until deployment. System Architects face a tough challenge in understanding what are the various security requirements, how such requirements are applied to software systems at various interfaces, how to capture the system security artifacts and articulate it better to stakeholders. We describe how various model based systems engineering concepts are applied in capturing the requirements and how those requirements are applied to various components and interfaces and can provide traceability. © 2012 The Authors.