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Multi-information integration-based thunder and lightning monitoring and forecasting method for electric transmission and transformation equipment

A power transmission and transformation equipment and multi-information technology, which is applied in the field of thunderstorm monitoring and forecasting based on multi-information synthesis, can solve the problem of too many empty reports, and achieve the effects of good reliability, strong practicability and high accuracy

Active Publication Date: 2015-11-18
STATE GRID CORP OF CHINA +2
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AI Technical Summary

Problems solved by technology

Lv Weitao and others integrated a variety of observation data, designed and developed the lightning approach warning system, and carried out commercial operation, but there were many empty reports

Method used

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  • Multi-information integration-based thunder and lightning monitoring and forecasting method for electric transmission and transformation equipment
  • Multi-information integration-based thunder and lightning monitoring and forecasting method for electric transmission and transformation equipment

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Select a case of power transmission and transformation lines affected by lightning disasters collected by the power department, and use the developed thunderstorm potential and nowcasting model based on the synthesis of multiple information data to monitor and forecast the area and probability of thunderstorms (historical cases returns).

[0029] (1) Monitoring of icing hazards on transmission lines

[0030] At 08:20 on April 29, 2013, phase A (left line) of the 500kV Sanjiang Second Circuit tripped and a lightning strike with a current intensity of -14.3kA occurred near No. 61 to No. 62 towers. According to the on-site investigation, it is located near the No. 61 tower of the third group of Liaojialing, Xiaoxi Tower, Yiling District, Yichang City. When monitoring with the observation data of the new generation Doppler weather radar, it was found that there was a thunderstorm in Yichang at 08:00 on April 29. The lightning locator observed dense lightning from 08:00 to ...

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Abstract

The invention provides a multi-information integration-based thunder and lightning monitoring and forecasting method for electric transmission and transformation equipment, which is characterized by comprising the steps of 1, establishing a thunderstorm potential forecasting model and establishing a Hubei province thunderstorm potential forecasting equation; 2, establishing a thunderstorm nowcasting model, and selecting a radar composite reflectivity factor (CR), an echo top height (ET) and a vertical integrated liquid water (VIL) as nowcasting factors to lock the thunderstorm based on the stepwise decreasing FAR method; at the same time, in combination with the monitoring information of a lightning position finder, forecasting the possible area wherein the thunderstorm appears within 30 minutes in the future; 3, establishing a thunder and lightning monitoring and forecasting system for a power transmission line. According to the technical scheme of the invention, the precipitation area and the probability of the thunderstorm in different areas can be accurately forecasted. The method is high in accuracy, strong in practicability and good in reliability.

Description

technical field [0001] The invention relates to a lightning disaster meteorological monitoring and forecasting method, in particular to a thunderstorm monitoring and forecasting method based on multi-information synthesis. Background technique [0002] The historical statistics of the power industry show that in the faults of power transmission and transformation lines and equipment, line tripping or insulator flashover accidents caused by lightning strikes account for 70%-80% of power transmission and transformation line fault accidents. With the development of power transmission and transformation lines in power systems, the losses caused by lightning strikes will continue to increase. It is particularly important to realize real-time monitoring and forecasting of lightning, take effective measures to prevent lightning strikes, and minimize unnecessary losses caused by lightning strikes. At present, the lightning forecast is mainly based on a single data, which is not tim...

Claims

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Application Information

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IPC IPC(8): G01W1/10G01S13/95
CPCG01S13/95G01W1/10G01W1/16G01W2203/00Y02A90/10
Inventor 阮羚苟阿宁周月华高正旭周悦黄俊杰熊宇
Owner STATE GRID CORP OF CHINA
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