A New Ice Covering Model

In many regions, the transmission line was covered with ice because of the freezing rain. This increased the weight of the transmission line, and sometimes caused a series of accidents. Such as flashover, break of the line, the falling down of the pole or the tower, and so on. All of the available ice covering models are according to the related meteorology data and forecast the ice covering load of the glaze or the rime through theoretical model. And the results will be different from the practical situation. This paper includes five parts content. First of all, it is a review of the available ice covering forecasting models. And in this part, a new ice covering model will be put forward. It realizes the on-line monitoring of the covering ice. The second part will talk about the ice covering model from the mechanical properties of the transmission line. If we get the data of the strain change of the transmission line, we can calculate the stress change. In the third part we will establish connections between the strain change and the stress change of the transmission line, and from this connection we can derive the actual load. And in the fourth part we will compare the actual load we derived with the original load of the transmission line, and eliminating the affect of some factors, such as the wind, temperature and so on. Then we can isolate the change of the load which caused by ice covering.