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Monitoring point distribution method and system based on power grid microtopography icing threat path extension analysis

An extended analysis, micro-topography technology, applied in seismic signal processing and other directions, can solve the problems of difficulty in accurately predicting the migration of icing hazards in micro-terrain and untimely monitoring of icing, so as to avoid problems in establishment and solution, improve pertinence, and achieve universality. good effect

Active Publication Date: 2021-04-09
STATE GRID HUNAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

It is used to solve the technical problems that it is difficult to accurately predict the occurrence and migration of micro-terrain icing hazards and the icing monitoring is not timely under the icing condition of the regional power grid

Method used

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  • Monitoring point distribution method and system based on power grid microtopography icing threat path extension analysis
  • Monitoring point distribution method and system based on power grid microtopography icing threat path extension analysis
  • Monitoring point distribution method and system based on power grid microtopography icing threat path extension analysis

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Effect test

Embodiment 1

[0051] The monitoring distribution method of the present embodiment based on the extension analysis of the power grid micro-terrain icing threat path includes the following steps:

[0052] (1) Data collection of ice-covered environment. Select a certain ice-covered area, and collect the terrain data of the area before the winter rain and snow freezing process, that is, the ice-covered micro-topography distribution data and numerical elevation terrain data in the area; collect the meteorological prediction data of the area, that is, the Forecasted temperature and humidity distribution data in this region during this process.

[0053] (2.1), Meteorological data sorting. Select the meteorological forecast data obtained in step (1), first grid the temperature forecast data, and require that the division of the grid is completely corresponding to the range of the numerical elevation grid, and then grid the humidity forecast data according to the same method.

[0054] (2.2), micro...

Embodiment 2

[0072] (1) Data collection of ice-covered environment. Collect relevant data on the icing process of Hunan power grid in the middle and late February of 2019, including Hunan topographical data, that is, the province's numerical elevation terrain data and micro-topographic latitude and longitude coordinate data; the 7-day temperature and humidity forecast data of the day before Hunan power grid appeared to be icing.

[0073] (2.1), Meteorological data sorting. Select the meteorological forecast data obtained in step (1), first grid the temperature forecast data, and require that the division of the grid is completely corresponding to the range of the numerical elevation grid, and then grid the humidity forecast data according to the same method.

[0074] (2.2), micro-topographic data sorting. According to the distribution of ice-covered micro-topography in the selected area obtained in step (1), the numerical elevation terrain data is used to establish the grid data of ice-co...

Embodiment 3

[0081] This embodiment provides a computer system, including a memory, a processor, and a computer program stored in the memory and operable on the processor. When the processor executes the computer program, the steps in any of the foregoing embodiments are implemented.

[0082] To sum up, the present invention makes full use of the information integration and comparative advantages of the optimized ant colony algorithm, establishes the micro-terrain icing path threat extension path, and obtains the micro-terrain icing development prediction result and monitoring distribution scheme. It has high practicability and good versatility, and effectively avoids the problems of establishing and solving physical models. It plays an important role in maintaining the safety and stability of the power grid and disaster prevention and mitigation. It also has certain enlightening significance for the dispatch management of transportation, construction and other industries.

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Abstract

The invention discloses a monitoring point distribution method and system based on power grid microtopography icing threat path extension analysis, and the method comprises the steps: selecting a to-be-analyzed region easy to ice, and collecting topographic data and meteorological prediction data of the region before the region is frozen by rain and snow in winter; implementing gridding; utilizing numerical elevation topographic data to establish icing micro-topographic grid data, and establishing icing micro-topographic heuristic factors; forming an icing environment multi-dimensional array; establishing a heuristic factor corresponding to the type of the meteorological prediction data; outputting an extension path of the microtopography icing threat by optimizing the ant colony algorithm according to a microtopography heuristic factor, the heuristic factor corresponding to the type of the meteorological prediction data and a distance heuristic factor and a pheromone factor of the ant colony algorithm; and monitoring and distributing key microtopography point locations and important power transmission lines on an extension path threatened by microtopography icing. According to the invention, the occurrence position and development condition of the icing threat can be directly obtained.

Description

technical field [0001] The invention relates to the field of power transmission line protection, in particular to a method and system for monitoring and arranging points based on the extension analysis of the power grid micro-terrain icing threat path. Background technique [0002] In southern China, once the freezing process of winter rain and snow occurs, it will often cause ice covering of transmission lines within a certain period of time and within a large range. In general, the icing process of the power grid caused by the intersection of cold and warm air masses mainly presents a dynamic development trend from north to south or from west to east. During the development process, due to the influence of terrain factors, the distribution of ice coverage is extremely uneven, especially in areas with micro-topography, which is prone to sudden aggravation of ice coverage, which poses a huge threat to the safe and stable operation of transmission lines. [0003] The improve...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30G01V1/36
CPCG01V1/30G01V1/36
Inventor 邸悦伦章国勇叶钰
Owner STATE GRID HUNAN ELECTRIC POWER
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