Ice coating line weak link early warning method of transmission

The present invention discloses a transmission line icing weakness warning method, comprising the steps of: 1. determining weather forecast information, ice information, the information transmission line 2, an accurate model of stress calculation model based conductor of transmission line to solve Strain real-time profile of each stress value within the tower section, and calculates suffered unbalanced force on the tower, 3, Numerical analysis real-stress and ultimate stress values, graded for warning wire, limit comparison tower unbalanced force imbalance and force, be graded tower warning. The present invention can be implemented in the Intelligent power system is determined on ice during breakage of the transmission line conductors. By comprehensive collection of information, using stall stress values ​​from the calculation model and stress calculation model accurately representing the line profile measurement, thereby accurately judge whether the line is disconnected at risk, to avoid the traditional method is not determined directly, the accuracy is low, consumption long time shortcomings.