Icing degree classifying system for power transmission line

Abstract

The invention discloses an icing degree classifying system for a power transmission line, aiming at solving the problem that the systematized icing degree classifying system which causes the influence of local meteorology and topographical feature on icing degree is not established in the prior art. The icing degree classifying system comprises a system module, a high-resolution reanalysis circulation data ERA-40 database, an NCEP / NCAR reanalysis database, an area icing observation database, an area meteorology database, an area topography database and a displaying and printing system, wherein the system module is used for classifying the icing degree of the power transmission line and is controlled through a CPU; the high-resolution reanalysis circulation data ERA-40 database, the NCEP / NCAR reanalysis database, the area icing observation database, the area meteorology database and the area topography database are respectively connected with the input ends of the system module; and the displaying and printing system is connected with the output end of the system module. On the premise of ensuring the safe running of the power transmission line, the icing degree classifying system saves project investment, reduces later maintenance cost, prolongs the service life of the power transmission line, and provides the advanced and applicable technique for the design of the power transmission line in future, thus having good economic benefit and social benefit.

Description

Technical field [0001] The invention relates to an ice zone division system module, in particular to a transmission line ice coating grade division system. Background technique [0002] my country is one of the countries with more severe ice on transmission lines. In the last 30 years, there have been many large-scale ice disaster accidents. For example, in January 1984, the power grids in East China and Guizhou were disconnected due to large-scale icing; at the beginning of 1996, the 35-220 kV line in Fujian Province was overwhelmed. Ice caused more than 200 broken poles; during the Spring Festival of 2005, in Hunan, Hubei, Guizhou and Chongqing, due to continuous large-scale rain and snow, the worst ice disaster occurred in 50 years, 17 power supply lines were paralyzed. It affects production and life for more than a month; in 2008, due to continuous rain, snow and freezing weather, large areas of transmission lines were covered with ice, transmission towers were overwhelmed, ...

AI Technical Summary

Problems solved by technology

Huang Xinbo et al. conducted research on the relationship between line icing and local meteorological factors, and the results showed that: the formation of ice, the process of automatic shedding and meteorological conditions are closely related, and the formation of line icing requires specific environmental conditions; using a single ambient temperature, Humidity, wind speed and other meteorological factors have poor reliability in icing prediction, especially the false alarm rate is too high, and the accuracy of icing prediction using multiple meteorological factors is relatively high

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