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Micrometeorological data based electric power circuit icing thickness prediction method

An ice-covered thickness, power line technology, applied in forecasting, data processing applications, calculations, etc., can solve the problems of no longer being able to accurately reflect the growth of ice-covering, loss of meaning, high complexity, etc., and achieve good application prospects, positive effect of actual value

Inactive Publication Date: 2013-04-03
STATE GRID ZHEJIANG LINAN POWER SUPPLY +1
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Problems solved by technology

However, this model strictly based on mathematical derivation has a big defect, that is, when the resolution of the required meteorological parameters does not meet the requirements, the mathematical formula of the model loses its meaning and can no longer accurately reflect the growth of ice cover
[0008] At the same time, the icing of transmission lines is affected by many factors, and there is a high degree of complexity and nonlinearity between each influencing factor and the thickness of icing.
According to relevant reports, there are more than a dozen existing physical models of wire icing, but according to authoritative departments, none of the models has been fully verified by comparison with actual icing data

Method used

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  • Micrometeorological data based electric power circuit icing thickness prediction method
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  • Micrometeorological data based electric power circuit icing thickness prediction method

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Embodiment Construction

[0031] Features of icing power lines in micro-meteorological environment:

[0032] 1. The local temperature is around zero, and under the influence of breeze and high humidity, it is easy to be covered with ice, and it is easy to cause unbalanced icing and cause the pole to fall.

[0033] 2. Icing is more likely to occur under certain micro-topographic conditions, such as: proximity to lakes, windward outlets, mountain watersheds, etc.

[0034] 3. The difference in altitude also has an important impact on the icing of conductors.

[0035] The power line icing prediction method proposed by the present invention is developed according to the characteristics of power line icing under the above-mentioned micro-meteorological conditions, and the software flow of its algorithm is shown in figure 1 .

[0036] The present invention is a method for predicting ice coating thickness of power lines based on micro-meteorological data. The predicted meteorological data is input into the a...

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Abstract

The invention relates to a micrometeorological data based electric power circuit icing thickness prediction method and belongs to the technical field of electric power circuit icing monitoring and management and icing disaster warning. By the method, predicted meteorological data are inputted into an artificial neural network model for operation so that corresponding icing thickness is obtained, wherein the meteorological data include wind speed, wind direction, air temperature, humidity, air pressure and rain capacity. The method is capable of accurately predicting the electric power circuit icing thickness under the micrometeorological condition, and can be applied to icing monitoring and management and icing disaster warning.

Description

technical field [0001] The invention relates to a method for predicting the icing thickness of power lines based on micrometeorological data, and belongs to the technical field of icing monitoring and management of power lines and early warning of icing disasters. Background technique [0002] As a special meteorological condition, icing has seriously affected the safe operation of many overhead power lines in my country. At the beginning of 2008, a severe freezing disaster happened once in 50 years in southern my country. From the perspective of the national power grid, the tentacles of the snow disaster covered Hunan, Jiangxi, Hubei, Henan, Sichuan, Chongqing, Anhui, Zhejiang, Fujian and even the entire southern China. The ground wire of the transmission line is suspended, the conductor is twisted and deformed, the insulator is broken, and the iron tower collapses, bringing unprecedented harm to the power grid. Among them, the direct regulation system of the Central China ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04
Inventor 资斌李志强麻立群陈新君
Owner STATE GRID ZHEJIANG LINAN POWER SUPPLY
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