Power transmission line tower lightning strike risk evaluation method based on data mining technology

A transmission line and data mining technology, applied in data processing applications, instruments, calculations, etc., can solve problems such as the inability to consider the guiding role of lightning strike operation experience, the inability to accurately assess the lightning strike risk of transmission line towers, and the correction and evaluation method of tower information.

CN104463700AActive Publication Date: 2015-03-25STATE GRID CORP OF CHINA +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2015-03-25

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Abstract

The invention discloses a power transmission line tower lightning strike risk evaluation method based on the data mining technology. The power transmission line tower lightning strike risk evaluation method based on the data mining technology comprises the steps that the coordinates of a power transmission line tower, the structure information of the tower and insulating configuration information are input into a GIS, and the elevation information around the tower and the cloud-to-ground lightning density degree of the position where the tower is located are extracted by means of the GIS; topographic feature parameters are calculated according to the elevation information; calculation is conducted according to the coordinates of the tower, the structure of the tower and the insulating configuration information, so that a predicted value of the lightning strike trip-out rate of the tower is obtained. The power transmission line tower lightning strike risk evaluation method based on the data mining technology is characterized by further comprising the steps that the obtained topographic feature parameters of the tower, the obtained cloud-to-ground lightning density degree, the obtained predicted value of the lightning strike trip-out rate and obtained lightning strike trip records are input by means of data mining software, a data mining model is established, and the probability of lightning strike trips of the base tower is analyzed and output; the lightning strike trip probability of the tower is compared with the lightning strike trip probability of a tower to which lightning strike strips happen once, so that the lightning strike trip risk grade of the tower is evaluated, and reliable data support is provided for lightning protection design of a power transmission line and lightning protection differentiation transformation of the power transmission line.
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Description

technical field

[0001] The invention relates to the application field of lightning prevention and control for transmission lines, in particular to a data mining technology-based lightning strike risk assessment method for transmission line towers, which is applicable to the assessment of lightning strike risk for high-voltage, ultra-high voltage and ultra-high voltage overhead transmission line towers in power systems. Background technique

[0002] Operation statistics show that lightning strikes have become the main cause of transmission line tripping. Although various lightning protection measures have been taken, the tripping rate due to lightning strikes is still high. Although lightning protection measures such as line arresters can effectively reduce the lightning tripping rate, due to the high cost, it is impossible to popularize and try them on a large scale on transmission lines. Existing studies have shown that the lightning protection performance of transmission l...

Examples

Embodiment Construction

[0022] The technical solutions in the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0023] figure 1 Shown is the structure schematic diagram of the lightning strike risk assessment method for transmission line towers based on data mining technology in the present invention, and the method includes the following steps:

[0024] Step 10: Input the coordinates of transmission line towers into the GIS system, and use the GIS system to extract the elevation information within a certain range around the transmission line towers and the location of the towers according to the digital elevation map (DEM) and the distribution map of the ground flash density Ground flash density level and ground inclination;

[0025] Specifically, the digital elevation map (DEM), ground flash density distribution map and tower coordinate information of the area where the tower is located are input into the GIS ...