Research on communication security of substation automation system based on IEC 62351

With the development of information technology,the information security of power industry has become a serious problem which could impact the stability of power system.The release of IEC 62351 gives guarantee for substation communication system and network.We propose a security model for the standard typical application by analyzing IEC 62351 and security access.The model includes authentication,confidentiality and integrity.The design of this model is tightly associated with IEC 62351 and complies with the existing information security mechanism of power system automation.The model can be used in IED security access and control of the substation under network by analyzing example.