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Method and system for calculating icing actual condition of line based on height correction

A high-voltage line, high-level technology, applied in computing, computer-aided design, overhead line/cable equipment, etc., can solve the problems of high power consumption, low frequency of image collection, and blurred image collection, etc., to achieve reliable reference value, calculation Convenience, fast and reliable results

Inactive Publication Date: 2021-04-16
STATE GRID HUNAN ELECTRIC POWER +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method has the following problems: First, the power consumption of image acquisition is high, and the life is short, and it often needs to be replaced and repaired in winter; The collection frequency is low and the transmission is slow, which makes it difficult to meet the needs of real-time monitoring

Method used

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  • Method and system for calculating icing actual condition of line based on height correction
  • Method and system for calculating icing actual condition of line based on height correction
  • Method and system for calculating icing actual condition of line based on height correction

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Embodiment 1

[0032] This embodiment discloses a method for calculating the real-time icing condition of a line based on height correction, such as figure 1 shown, including:

[0033] Step S1. Obtain the real-time temperature and humidity of the transmission line through the temperature sensor and the humidity sensor on the wire rack respectively, and judge whether the real-time temperature and humidity meet the freezing conditions. The freezing conditions are that the temperature is less than or equal to 0 degrees and the humidity is greater than or equal to 85%; when the temperature and humidity meet the two conditions of freezing, execute the following step S2; otherwise, terminate the calculation.

[0034] Step S2: Establishing a power grid icing algorithm model based on the real-time data values ​​obtained by the detection equipment deployed at known heights where the high-voltage cables pass through to calculate the power grid icing. In this step, the specific calculation formula is ...

Embodiment 2

[0043] Corresponding to the above method, this embodiment discloses a line icing calculation system based on height correction, which includes a memory, a processor, and a computer program stored in the memory and operable on the processor. The steps of the above method are realized when the processor executes the computer program.

[0044] To sum up, the methods and systems for predicting icing of transmission lines based on sensor monitoring disclosed in the above-mentioned embodiments of the present invention have the following beneficial effects:

[0045] By realizing the calculation of cable icing at different altitudes on the known live data, the calculated value has high reliability, convenient and fast calculation, and high stability, providing reliable reference value for cable maintenance personnel.

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Abstract

The invention relates to the technical field of power grid icing monitoring, and discloses a method and system for calculating the icing actual condition of a line on height correction so as to improve the icing actual condition monitoring precision. The method comprises the steps of S1, acquiring the real-time temperature and humidity of a power transmission line through a temperature sensor and a humidity sensor on a power grid line frame respectively, and judging whether the real-time temperature and humidity meet the freezing condition or not, wherein the freezing condition is that the temperature is less than or equal to 0 DEG C and the humidity is greater than or equal to 85%; when the temperature and the humidity meet the two icing conditions, executing the following step S2; otherwise, ending the calculation; S2, establishing a power grid icing algorithm model according to the actual condition data value obtained by detection equipment deployed at the known height through which the line of the high-voltage cable passes, and carrying out power grid icing calculation; and S3, after the icing thickness of the height to be solved is calculated, continuously giving an alarm to the icing load of the high-voltage line according to a real-time temperature detection result.

Description

technical field [0001] The invention relates to the technical field of power grid icing monitoring, in particular to a method and system for calculating real-time icing conditions of lines based on height correction. Background technique [0002] Rime is formed when cold raindrops fall on objects with a temperature below freezing (0°C). If condensation is on the wires, ice the wires; that is, wires are iced. If all wires within a range are covered with ice, it means: the line is covered with ice. [0003] With the increase of ice coating, the weight of ice on wires, insulator strings and towers and the increase of wind pressure due to the increase of wind area after ice coating. When the combined load of ice and wind exceeds the strength allowable value of the above components, the line will be damaged. Affected by factors such as terrain, ground features, wind direction and wind force, the icing on both sides of the line pole tower may be uneven. . When there is a cert...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G1/02H02G7/00H02J13/00G06F30/28G06F111/10G06F113/04
Inventor 怀晓伟杨莉叶钰冯涛简洲邸悦伦
Owner STATE GRID HUNAN ELECTRIC POWER
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