关键词: SCADA, 防御图, 证据网络推理, 安全评估

Abstract:

Supervisory control and data acquisition system,is a smart grid is an important part of power communication system,is the guarantee of the basis for the normal operation of.With the development of power system in the broad application of computer network technology,SCADA system is more dependent on the information system and the remote communication network,the network security threats grow rapidly.In view of the network security assessment of the problem,put forward a kind of defense of network evaluation model combining evidence reasoning,in order to reduce the uncertainty assessment process of.Through the example analysis,proved the validity of the approach.

Key words: SCADA;defense graph;evidential network reasoning;security assessment