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Method and system for detecting flood depth of substation

A detection method and substation technology, applied in the theoretical field, can solve problems such as low inversion accuracy

Active Publication Date: 2022-07-12
CHINA ELECTRIC POWER RES INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In order to solve the problem of low inversion accuracy of traditional flood depth inversion based on digital elevation models, the present invention specifically relates to a substation flood depth detection method, the method comprising:

Method used

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  • Method and system for detecting flood depth of substation
  • Method and system for detecting flood depth of substation
  • Method and system for detecting flood depth of substation

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0058] like figure 1 Shown is a substation flood depth detection method of the present invention, comprising the following steps:

[0059] Step 1: Select the substation to be tested and the transmission tower near the substation within the predetermined flood coverage;

[0060] Step 2: Obtain secondary scattering between the substation and the water body and between the transmission tower and the water body based on prior knowledge;

[0061] Step 3: Perform polarization decomposition based on full-polarization synthetic aperture radar data to obtain secondary scattering components of transmission towers and substations;

[0062]Step 4: Based on the secondary scattering and secondary scattering components, solve the flood depth of the substation.

[0063] Below in conjunction with specific embodiment, the inventive step of the present invention is further explained:

[0064] Explanation for the determination of the flood range in step 1:

[0065] Flood Coverage Monitoring T...

Embodiment 2

[0104] The first transmission tower height h A , the height of the second transmission tower h B , substation wall height h C , substation perimeter l, transmission tower material and complex dielectric constant ξ T , Substation wall material and complex permittivity ξ B , the wavenumber k of the SAR image, the azimuth angle of the first transmission tower Azimuth of the second transmission tower Azimuth of the substation Incidence angle θ of the first transmission tower A , the second transmission tower incident angle θ B , substation incident angle θ C , the complex dielectric constant ξw of the flood water surface, the standard root height s of the water surface and the standard length L of the water surface.

[0105] like figure 2 It is shown that in the method of this patent, it is necessary to select the substation and two nearby transmission towers with different heights as the basic elements of the equation construction. h A , h B and h C are the heigh...

Embodiment 3

[0114] The invention also relates to a substation flood water depth detection system, comprising:

[0115]Selecting the tested target module: used to select the tested substation and the transmission tower near the substation within the predetermined flood coverage;

[0116] Obtaining secondary scattering module: used to obtain secondary scattering between the substation and the water body and between the transmission tower and the water body based on prior knowledge;

[0117] Obtaining secondary scattering component module: used for polarization decomposition based on full-polarization synthetic aperture radar data to obtain secondary scattering components of transmission towers and substations;

[0118] Solve flood depth module: used to solve the substation flood depth based on the secondary scattering and secondary scattering components.

[0119] The module for selecting the measured target includes a first water body range determination unit, a second water body range det...

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Abstract

The invention relates to a substation flood depth detection method and system, including: selecting a substation to be tested within a predetermined flood coverage area, and a transmission tower near the substation, and obtaining the distance between the substation and the water body and the For the secondary scattering between the transmission tower and the water body, the polarization decomposition is performed based on the full-polarization synthetic aperture radar data to obtain the secondary scattering components of the transmission tower and the substation. Based on the secondary scattering and secondary scattering components, the substation flood is solved. water depth. The invention relates to a substation flood depth detection method and system, which can calculate the flood depth more accurately, so as to quickly perform qualitative and quantitative statistical analysis on the disaster situation of important power facilities such as substations or transmission towers during or after a flood.

Description

technical field [0001] The invention belongs to a theoretical technical method, and relates to a substation flood depth detection method and system. Background technique [0002] Flood refers to the phenomenon of flooding and flooding of low-lying areas due to heavy rain, heavy rain or continuous rainfall. The impact of floods is comprehensive, which will harm the growth of crops, cause crop yield reduction or no harvest, endanger the safety of human life and property, damage the normal operation of power facilities, and affect the long-term stability of the country. [0003] At present, existing researches often use simple threshold segmentation and SAR data simulation simulation based on digital elevation model (DEM) to extract flood coverage. Simple threshold segmentation methods cannot distinguish between water bodies and shadows, resulting in a large false alarm rate. The water monitoring accuracy obtained by SAR data simulation based on digital elevation model (DEM) ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01C13/00
CPCG01C13/008Y02A10/40
Inventor 杨知费香泽贺兴容尹德君叶有名于佰龙欧文浩赵斌滨马潇王剑
Owner CHINA ELECTRIC POWER RES INST
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