Power grid icing growth trend forecasting method based on digital elevation model

Abstract

The invention provides a power grid icing growth trend forecasting method based on a digital elevation model. The method includes the following steps of firstly, setting up a power grid comprehensive geographic information platform; secondly, collecting data of the weather forecast at each time level; thirdly, obtaining a coordinate of each grid point; fourthly, correcting temperature data; fifthly, calculating the icing increment; sixthly, saving the icing increment into a file in the grid point mode; seventhly, repeating the fourth step, the fifth step and the sixth step; eighthly, drawing an icing growth distribution diagram at each time level; ninthly, marking icing growth data of an electric transmission line. The method has the advantages that the power grid icing conditions at multiple time levels can be forecasted, the operability is strong, the accuracy of forecasting of the power grid icing trend is high, the deicing work of the electric transmission line can be powerfully guided, and the method plays an extremely important and absolutely necessary role in keeping a power grid to be safe and stable and reducing ice damage losses.

Description

technical field [0001] The invention belongs to the technical field of power transmission and distribution, and in particular relates to a method for predicting the ice-covered growth trend of a power grid based on a digital elevation model. Background technique [0002] With the development of society, human beings rely more and more on electricity, and the threat of ice disasters to society is becoming more and more serious. Ice covering of power grid is one of the natural disasters that seriously endanger the safe and stable operation of transmission lines. Severe icing will lead to a sharp decline in the mechanical and electrical performance of the transmission line, causing power grid accidents such as tower collapse, disconnection, wire galloping, and icing flashover. Therefore, it is of vital significance to strengthen meteorological analysis and establish a forecast and early warning of ice-covered power grids. In particular, the prediction of power grid icing can r...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for predicting the growth trend of power grid icing based on a digital elevation model in view of the defect that the current traditional power grid icing prediction method does not take into account the influence of altitude on air temperature. Combined with the digital elevation model, the influence of altitude on air temperature can be corrected, and the growth trend of ice cover can be accurately predicted, with clear process, high accuracy and strong practicability