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Northern area power grid icing numerical forecast correction method considering solar radiation

A technology for regional power grids and solar radiation, applied in forecasting, data processing applications, instruments, etc., can solve problems such as insufficient consideration of short-term solar radiation temperature rise, deviation of transmission line icing forecast, and achieve high forecast accuracy and simple method. Reliable, Accurate Results

Active Publication Date: 2016-12-07
STATE GRID HUNAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current grid icing numerical model in commercial operation does not fully consider the short-term temperature rise caused by solar radiation, and there is a certain deviation in the icing prediction of transmission lines in the northern region.

Method used

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  • Northern area power grid icing numerical forecast correction method considering solar radiation
  • Northern area power grid icing numerical forecast correction method considering solar radiation
  • Northern area power grid icing numerical forecast correction method considering solar radiation

Examples

Experimental program
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Effect test

Embodiment 1

[0033] On November 6-9, 2015, a large-scale severe icing process occurred in Liaoning Province. Taking Dalian City as an example, the icing process was analyzed by using the numerical forecast and correction method of icing in northern regions considering solar radiation of the present invention. The numerical forecast is corrected, and the specific steps are as follows:

[0034] (1), meteorological data collection. From the weather forecast of the local meteorological station on November 6, 2015, the ground and high-altitude real-time meteorological data and forecast weather data of the day were collected, including precipitation data and temperature data.

[0035] (2) Icing data collection. Collect the live information of transmission line icing in Liaoning Province on November 6, 2015 and the numerical forecast information of transmission line icing on November 7-12, 2015:

[0036] On November 6, 2015, the icing areas of transmission lines were Dalian and Yingkou;

[003...

Embodiment 2

[0068] On November 23-24, 2015, an icing process occurred in Henan Province. The numerical forecast correction method for the icing process in the northern region considering solar radiation of the present invention was used to correct the numerical forecast of the icing process. The specific steps are as follows:

[0069] (1), meteorological data collection. From the weather forecast of the local meteorological station on November 22, 2015, the ground and high-altitude real-time meteorological data and forecast weather data of the day were collected, including precipitation data and temperature data.

[0070] (2) Icing data collection. Collect the live information of icing on transmission lines in Henan Province on November 22, 2015 and the numerical forecast information on icing on transmission lines on November 23-26, 2015:

[0071] On November 22, 2015, the transmission lines were basically free of ice;

[0072] Numerical forecast results of transmission line icing on No...

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Abstract

The invention discloses a northern area power grid icing numerical forecast correction method considering solar radiation. The method comprises the following steps that ground and high-altitude real-time meteorological data and forecast meteorological data of the day are acquired from the day's weather forecast of a local meteorological station of northern areas, wherein the real-time meteorological data and the forecast meteorological data include temperature data; local power transmission line real-time icing data and numerical mode forecast icing data of the northern areas are collected; inversion of daily solar radiation intensity in the period of real-time icing and forecast icing is performed by using the temperature data; a coordinate system is established with the daily solar radiation intensity acting as the abscissa and the highest temperature acting as the ordinate, and the position of a calculating day in the coordinate system is determined; and the numerical mode icing forecast result is corrected. According to the method, the existing power grid icing model can be corrected so as to further meet the icing process of the northern areas and enhance the accuracy of power grid icing prediction; and the method has the advantages of being simple and reliable, high in operability and high in forecast accuracy.

Description

technical field [0001] The invention relates to the field of electrical engineering, and relates to a method for forecasting and correcting ice-covered numerical values ​​of power grids in northern regions in consideration of solar radiation. Background technique [0002] Ice disasters can easily cause large-scale power outages in the power grid. For example, in early 2008, many provinces in southern my country suffered from large-scale and long-term snow and ice disasters. More than 700,000 towers were covered with ice, and large-scale power outages lasted for 7 days. The property loss of the power grid was 250 million. More than 100 million yuan has seriously affected the normal production and life of the people. According to historical statistics, the southern region of my country is a region of repeated ice coverage, and the northern region is rarely covered with ice. Especially after 2008, there have been a large number of researches on the icing of power grids in the so...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06
CPCG06Q10/04G06Q50/06
Inventor 陆佳政李丽徐勋建郭俊杨莉张杰冯涛
Owner STATE GRID HUNAN ELECTRIC POWER
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