Transmission Network Security Analysis Based On Risk Theory

With the expanding scale of the electricity transmission networks, the structure of the growing complexity of the capacity of its risk relative weakening of the electricity transmission networks cause frequent accidents, security problems have become increasingly prominent. In particular, in recent years, more frequent natural disasters are brought to the transmission networks of the great test. Grid component failures are caused by power grid outage root causes of the accident, many long-term components of the electricity transmission networks in the outdoor environment, and its status by the greater impact of weather conditions. Now, how to improve the security and reliability of transmission networks has become a pressing problem.Transmission networks to carry out risk assessment is for a better understanding of the risk to its existence and to take targeted measures to reduce the risk of rectification. At present, the power grid or safety evaluation of risk assessment theory and method has been very rich, but practicality is not strong. This article from the perspective of the risk of transmission networks for security analysis and research to explore the power grids in the risk assessment approach. Transmission networks in the process of risk assessment, the paper communicate with DC-based fault analysis of the expected, based on OPF model is based on constructing optimal load reduction model to explore the LINGO software-based solution of DC-based trend of the optimal load reduction model. In addition, risk assessment on the grid the main risk indicators in detail and put forward to reduce the risk of transmission networks initiatives. Throughout, the thesis to follow the principle of practicality to enhance analysis and research question, demonstrates the theory with practice, the theoretical discussion of the actual Service thinking.