The Study of Substation Automation Remote Communication for Multi-granularity Access Control System

摘要

This paper based on the demands of access control of substation automation system, analyzed two operation objects of access control including information model and information exchange service of IED, and designed a multi-granularity access control system according to RBAC and granularity of the object and access policy. The design of the system is centralized in logical, and distribute in realization. It provides a centralized control for user's access, the access policy is generated by privilege verify and implemented in the distributed IED. And instance of remote configuration is illustrated to demonstrate that the design can fulfill the needs of access control in substation automation.