Multi-dimensional Risk Assessment Method for Electric Transmission Line

Since the traditional risk assessment method fails to fully reflect the special operating environment of the electric transmission line and its own characteristics, a multidimensional risk assessment method combining multiple factors is proposed. Firstly, according to the statistical method, the risk assessment model is established based on the historical fault and defect information of the electric transmission line. Secondly, the quantification process of the quantity of state of each component of the electric transmission line is derived, to obtain the risk assessment results with fault probability. Finally, the influence of factors such as the service life of the electric transmission line equipment, time and geographical location information of the electric transmission line and the operating status of the power grid on the risk value of the electric transmission line is studied. Examples show that the proposed method can well predict the risk of the electric transmission line, providing a good reference for the maintenance schedule and equipment replacement of the electric transmission line.