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Method for determining high-risk tower system according to height difference and span

A high-risk, pole-tower technology, applied in image data processing, electrical digital data processing, special data processing applications, etc., can solve problems such as low work efficiency, icing on wires, and inability to analyze poles and towers, so as to improve efficiency and reduce workload Effect

Pending Publication Date: 2021-11-12
GUIZHOU POWER GRID CO LTD
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Problems solved by technology

[0002] The transmission line is an important part of the power system and bears the heavy responsibility of power transmission. In recent years, the transmission line has been frequently attacked by severe cold and ice and snow weather. The transmission towers and wires in heavy ice areas are seriously covered with ice. Occurs, seriously endangering the safe operation of the power system; due to the large number of transmission towers spanning lots, when performing online monitoring and mechanical analysis of transmission tower lines, it is often impossible to analyze all towers, and the state of the towers has a high The characteristics of the risk are difficult to describe uniformly. At this time, how to narrow the scope of monitoring and analysis and determine the tower objects that need to be focused on is very important; and the existing technology does not have a method that can determine the high-risk tower system, resulting in the inspection of transmission towers. There are problems such as heavy workload and low work efficiency in monitoring and analysis

Method used

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  • Method for determining high-risk tower system according to height difference and span
  • Method for determining high-risk tower system according to height difference and span
  • Method for determining high-risk tower system according to height difference and span

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Embodiment Construction

[0034] The specific steps of the technical solution of the present invention are as follows:

[0035] Step 1. Select the same tower type "three towers and two stalls" system under the same voltage level, with different height differences and span ranges to construct a 3D simulation model.

[0036] The tower system of the same tower type selected in the above step 1 is: the three towers in the "three towers and two gears" are all composed of the same type of towers.

[0037] Step 1 The method for selecting multiple height differences is: set the line with the ratio h / l>0.1 of the suspension point height difference h of two adjacent towers to the span l>0.1 as the interval division standard of the line with large height difference and span, in order to quantify the difference The height difference of the span line is based on the ratio of h / l, and different ratios are set for selection. For example: according to the above definition, the selection interval can be set as h / l>0.1...

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Abstract

The invention discloses a method for determining a high-risk tower system according to a height difference and a span. The method comprises the following steps: step 1, selecting three-tower two-span systems of the same tower type under the same voltage grade and different height difference and span ranges to construct a three-dimensional simulation model; step 2, applying an icing load and a wind load to the selected three-tower two-span systems, simulating stress conditions of towers under different load conditions, and performing finite element mechanical simulation analysis to obtain mechanical characteristics of the towers; and step 3, according to the mechanical characteristics of the towers, statistically determining the towers in high-risk states. The method is used for early warning of anti-icing and disaster reduction of a power transmission line, can determine towers in a height difference and span range which should be focused on in a high-risk area, and can reduce the workload and improve the efficiency.

Description

technical field [0001] The invention belongs to the monitoring technology of ice-covered transmission towers, in particular to a method for determining a high-risk tower system according to height difference and span. Background technique [0002] The transmission line is an important part of the power system and bears the heavy responsibility of power transmission. In recent years, the transmission line has been frequently attacked by severe cold and ice and snow weather. The transmission towers and wires in heavy ice areas are seriously covered with ice. Occurs, seriously endangering the safe operation of the power system; due to the large number of transmission towers spanning lots, when performing online monitoring and mechanical analysis of transmission tower lines, it is often impossible to analyze all towers, and the state of the towers has a high The characteristics of the risk are difficult to describe uniformly. At this time, how to narrow the scope of monitoring a...

Claims

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Application Information

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IPC IPC(8): G06F30/23G06T17/00G06F119/14
CPCG06F30/23G06T17/00G06F2119/14
Inventor 吴建蓉毛先胤曾华荣文屹何思捷胡智浩胡荣俊杨涛范强黄欢阳林郝艳捧
Owner GUIZHOU POWER GRID CO LTD
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