Research On Method Of Power Communication Network Risk Assessment

Power communication network is the private communication network of power system operation and management, which is critical infrastructure of electric power system to ensure the safety and stability of power system operations. It has obvious characteristics of the industry and specific safety and reliability requirements. The risk assessment of power communication network has been an important problem of electric power communication system and an important means of electric power communication network safe operation.The communication management departments have paid high attention to security assessments of electric power communication network and have taken risk assessments .as an important step to achieve safe operations of power communication network management.On the basis of elaboration of research background and significance, domestic and overseas current research, this paper introduces the concept of risk, risk assessment methods, technology of power communication network, relevant risk assessment issue, methods of establishing power communication network risk assessment methodologies and evaluation system, using two methods of power communication network risk assessments, one based on AHP and the other based on BP neural network.For power communication network risk assessment based on AHP, the paper introduces principle of AHP first, which provides the theoretical basis for the risk assessment. On the basis of power communication network risk factor analysis, the index system of risk assessment is determined, and elaborated further in aspects of screening, validity and reliability verification methods, which guarantees the index system scientific and systemic. Lastly, the calculation results are analyzed basing AHP, and index system is further improved.For risk assessment of electric power communication network based on BP neural network, the paper firstly introduces the principle of BP neural network theory,network structure, and uses a variety of algorithms to determine the input layer, the hidden layer and output layer of BP neural network, and further establishes electric power communication network risk assessment model basing BP neural network,then proceeds training and testing on the model lastly.Overall, this paper provides systematic research on methods of power communication network risk assessment.