Abstract
Wind-induced disaster has become one of the most important disasters affecting the safe operation of power grid. In order to improve the effect of prevention and treatment of wind-induced disasters, it is very important to give early warning and real-time warning. Therefore, based on the climate characteristics of Shandong power grid, this paper presents the wind speed statistical law and the distribution characteristics of the number of days with strong wind. By analysing the mechanism of wind-induced disasters and combining the fault data of five years, the characteristics and rules of wind deviation and foreign short-circuit fault are obtained. On this basis, an early warning model of wind deviation based on the calibration of minimum air gap and the determination of maximum wind speed is established. At the same time, there is a short circuit model based on visual image information. Based on GeoServer platform, we will develop an early warning system for wind-induced disasters of transmission lines, which can provide real-time warning and early warning for wind-induced disasters. The application of the system can reduce the impact of wind damage on the transmission line, and effectively improve the operation reliability of the line.
Highlights
As the climatic environment becomes severe and extreme weather increases, the transmission lines erected in the open air are extremely susceptible to severe weather, causing the probability of line failures to increase
There have been many severe convective weather in local areas, especially in Liaocheng, Dezhou, Jinan, Binzhou and other areas, west-to-east downburst and tornado disasters have occurred many times, which are extremely destructive[1,2].The strong wind caused by severe convective weather sometimes exceeds the design wind speed of the line, and the transmission line fault caused by the wind disaster brings huge losses to the power system
The existing wind prevention system mainly relies on manual patrol and lacks online monitoring and automatic early warning systems.In order to better analyze the impact of wind on the failure of transmission lines based on the current situation of Shandong Power Network, this paper analyzes the impact mechanism of wind-induced disasters in combination with regional climate characteristics
Summary
As the climatic environment becomes severe and extreme weather increases, the transmission lines erected in the open air are extremely susceptible to severe weather, causing the probability of line failures to increase. The existing wind prevention system mainly relies on manual patrol and lacks online monitoring and automatic early warning systems.In order to better analyze the impact of wind on the failure of transmission lines based on the current situation of Shandong Power Network, this paper analyzes the impact mechanism of wind-induced disasters in combination with regional climate characteristics. At the same time from conducting statistical analysis of wind-induced disaster fault data in the past five years, combining with online micrometeorological monitoring and visualization image information, this paper establishes wind deviation and foreign body short-circuit models, realizing real-time monitoring of multi-channel environmental wind disasters and early warning of hidden defects, reducing the impact of wind damage on transmission lines and effectively improving the reliability of line operation
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