Method for forecasting ice coating of power grid

A technology of icing and power grids, applied in the field of electrical engineering, to achieve the effect of reducing losses and high forecasting accuracy

Active Publication Date: 2014-03-26
STATE GRID CORP OF CHINA +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a power grid icing prediction method that can meet the short-term icing information requirements of transmission lines in view of the current backwardness of power grid transmission line icing forecasting. The method is simple to operate, easy to implement, and accurate high rate

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] (1) From the weather forecast of the local meteorological station at the entrusted forecasting place, collect the ground real-time meteorological data of the southward weather station of the forecasting place, the upper-altitude real-time meteorological data of the 850hPa layer isobaric surface, and the upper-altitude real-time data of the 700hPa layer isobaric surface Meteorological data, as well as the ground real-time meteorological data of the weather station in the northward direction of the day's forecast, the upper-altitude real-time meteorological data of the 850hPa layer isobaric surface, and the upper-altitude real-time meteorological data of the 700hPa layer isobaric surface; Ground real-time meteorological data of meteorological stations, high-altitude real-time meteorological data of 850hPa layer isobaric surface, high-altitude real-time meteorological data of 700hPa layer isobaric surface, surface real-time meteorological data of the weather station nearest ...

Embodiment 2

[0025] Step (1) is the same as embodiment 1;

[0026] (21), according to the real-time meteorological data and weather forecast data collected in step (1), use conventional methods to judge whether the ground temperature of the entrusted forecast site is lower than the critical temperature of icing, that is, zero degrees, and the judgment result shows that the forecast of the entrusted forecast site If the daily surface temperature is not lower than zero, it is judged that the air temperature condition is not established;

[0027] (2) According to the real-time meteorological data and weather forecast data collected in step (1), use conventional methods to judge whether the forecasted daily rainfall of the entrusted forecast site is greater than zero, and the judgment result shows that the forecasted daily rainfall of the entrusted forecast site is not greater than zero, Make a judgment that the precipitation condition is not established;

[0028] (23), according to the real-...

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PUM

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Abstract

The invention provides a method for forecasting ice coating of a power grid. The method comprises the following steps of: (1) collecting meteorological data; (2.1) judging an air temperature condition; (2.2) judging a precipitation condition; (2.3) judging an inversion layer condition; (3) drawing a forecasting conclusion; and (4) publishing the forecasting conclusion. The invention has the advantages as follows: 1, the ice coating condition of the power grid in future two days can be forecast; 2, the forecasting accuracy is high; 3, the forecasting method is beneficial to the ice-removing work of transmission line operation staff, and the security and the stability of the power grid maintenance, so that the loss caused by ice disaster is reduced to the greatest extent.

Description

technical field [0001] The invention belongs to the technical field of electrical engineering, and in particular relates to a method for forecasting ice covering of a power grid. Background technique [0002] With the development of social economy, the dependence on electric power is increasing, and the threat of ice disaster to society is becoming more and more serious. Therefore, it is of great significance to strengthen meteorological analysis and establish a forecast and early warning of icing on the power grid. The icing of transmission lines is inseparable from the formation of winter climate, so the worldwide problem of meteorological forecasting is very difficult in terms of forecast accuracy and reliability, so this is the mature theory and method of icing forecasting so far. No real reason has yet emerged. At the same time, due to the strong influence of the plateau geography and climate of the Qinghai-Tibet Plateau in my country, the climatic conditions are compl...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01W1/10
CPCY02A90/10
Inventor 陆佳政杨莉李波方针张红先
Owner STATE GRID CORP OF CHINA
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