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Power grid wildfire disaster risk distribution diagram drawing method and system

A distribution map and power grid technology, applied in fire alarms, image data processing, 2D image generation, etc., can solve problems such as line tripping and power outages, unanalyzed power grid mountain fire disaster risk distribution, endangering the safe and stable operation of large power grids, etc. , to achieve the effect of convenient implementation, clear principle and strong practicability

Active Publication Date: 2018-01-16
STATE GRID HUNAN ELECTRIC POWER +3
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, with the construction and operation of UHV projects, a large number of UHV cross-regional lines gradually extend to areas prone to mountain fire disasters. When a large-scale mountain fire disaster breaks out, it is easy to cause multiple lines to trip and blackout for a long time at the same time, which greatly Affect the normal power supply, and even endanger the safe and stable operation of the large power grid in severe cases
Since the tripping of different transmission lines has different impacts on the power grid, areas with many wildfires are not necessarily areas with high risk of the power grid. The existing fire extinguishing equipment based on the number of fires can not minimize the risk of wildfire disasters in the power grid, which needs to be studied The method and system for drawing the distribution map of the power grid mountain fire disaster risk, which analyzes the risk distribution of the power grid under the conditions of the mountain fire disaster, and then guides the optimal deployment and control of fire extinguishing equipment to minimize the risk of the power grid
[0003] Patent ZL201510350841.X invented a calculation method for assessing the probability of mountain fire tripping on transmission lines, but this method cannot analyze the risk degree of power grids in different regions; patent CN105740642A discloses a MODIS satellite fire point accuracy based on multi-source remote sensing data Discriminant method, this method can only identify the number of fire points in different areas
[0004] In summary, none of the existing patents has analyzed the distribution of the risk of wildfire disasters in power grids, and cannot guide the optimal handling of wildfire disasters

Method used

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  • Power grid wildfire disaster risk distribution diagram drawing method and system
  • Power grid wildfire disaster risk distribution diagram drawing method and system
  • Power grid wildfire disaster risk distribution diagram drawing method and system

Examples

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Embodiment 1

[0032] This embodiment discloses a method for drawing a distribution map of a power grid mountain fire disaster risk, the method comprising:

[0033] Step 1. Obtain the prediction result of the power grid wildfire density for a certain day. The format of the prediction result is a grid point data file, and each grid point represents the number of wildfire fire points in the grid area.

[0034] Step 2: Analyze the set of transmission lines in each grid, and analyze the overlapping of the longitude and latitude of each tower of the transmission line with each grid. When the tower of the line falls in the grid, it means that the line passes through the grid; Lines do not pass through this grid.

[0035] Such as figure 1 As shown, the grid numbering method is as follows: the upper left grid is numbered 1, the upper right grid is numbered 2, the lower left grid is numbered 3, and the lower right grid is numbered 4. Through analysis, the set of transmission lines in each grid is o...

Embodiment 2

[0048] Corresponding to the foregoing method embodiments, this embodiment discloses a system for drawing a distribution map of mountain fire disaster risks in a power grid.

[0049] The system of this embodiment includes:

[0050] The first processing unit is used to divide the grid and obtain the grid fire density prediction results of each grid;

[0051] The second processing unit is used to analyze the set of transmission lines in each grid, and perform overlapping analysis on the longitude and latitude of each tower of the transmission line and each grid. When the tower of the line falls in the grid, it means that the line passes through the grid. Otherwise, it is considered that the line does not pass through the grid; and the grid risk degree of each line is calculated;

[0052] The third processing unit is used to calculate the power grid wildfire risk of each grid, and the calculation formula is as follows:

[0053]

[0054] In the formula, R i is the grid fire r...

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Abstract

The present invention relates to the power grid safety technology field, and discloses a power grid wildfire disaster risk distribution diagram drawing method and system to obtain the power grid riskdistribution situation under the wildfire disasters clearly and visually, and provide the decision support for taking the targeted wildfire disaster prevention measures. The method of the present invention comprises the steps of dividing the grids, and obtaining the power grid wildfire density prediction results of the grids respectively; analyzing the power transmission line set in each grid, superposing the longitudes and latitudes of the towers of the power transmission lines and the grids to analyze, when the towers of the lines are located in the grids, representing that the lines pass the grids, otherwise, determining that the lines do not pass the grids; calculating the power grid risk degree of each line; then calculating the power grid wildfire risk of each grid according to a correlation formula; and finally, ranking the power grid wildfire risk values of the grids, and matching colors according to the maximum value and the minimum value of the power grid wildfire risk valuesof the grids, thereby drawing a power grid wildfire disaster risk distribution diagram.

Description

technical field [0001] The present invention relates to the technical field of power grid safety, in particular to a method and system for drawing a mountain fire disaster risk distribution map of a power grid. Background technique [0002] In recent years, affected by the national policy of returning farmland to forests, my country's wildfire disasters have shown a trend of outbreaks, with an average of more than 50,000 wildfires per year. At present, with the construction and operation of UHV projects, a large number of UHV cross-regional lines gradually extend to areas prone to mountain fire disasters. When a large-scale mountain fire disaster breaks out, it is easy to cause multiple lines to trip and blackout for a long time at the same time, which greatly Affect the normal power supply, and even endanger the safe and stable operation of the large power grid in severe cases. Since the tripping of different transmission lines has different impacts on the power grid, area...

Claims

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Application Information

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IPC IPC(8): G06Q10/04G06Q50/06G08B17/00G06T11/00
Inventor 陆佳政郭俊简洲李波方针徐勋建杨莉
Owner STATE GRID HUNAN ELECTRIC POWER
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