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Power transmission line icing early warning method based on micrometeorological and icing historical data

A technology of power transmission lines and historical data, applied in data processing applications, alarms, instruments, etc., can solve the problems of bad weather, bad traffic, large labor and material resources, etc.

Inactive Publication Date: 2018-11-30
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, during the icing season of the power grid, the operation and maintenance unit usually adopts the method of artificial ice observation for observation and early warning, but the icing-prone line sections are generally in mountainous areas, with complex terrain, bad weather, and bad traffic. Working under bad weather conditions, it generally takes more than 2-4 hours to reach the ice viewing point. In remote areas, ice viewing can only be guaranteed once a day at most, and most of the coverage occurs at night. The operation and maintenance unit will spend a lot of manpower, material resources, and financial resources on line inspection watch ice
Therefore, artificial ice observation does not meet the requirements of power grid icing early warning in terms of timeliness, accuracy, economy, etc., resulting in insufficient response speed of icing early warning, and there are blind spots in time and space.

Method used

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  • Power transmission line icing early warning method based on micrometeorological and icing historical data
  • Power transmission line icing early warning method based on micrometeorological and icing historical data
  • Power transmission line icing early warning method based on micrometeorological and icing historical data

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Experimental program
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Effect test

Embodiment

[0068] refer to figure 1 As shown, the transmission line icing warning method based on micro-meteorology and icing historical data provided in this example specifically includes:

[0069] S1. Use meteorological data to clarify ice-covered areas and routes in order to provide an accurate basis for early warning information;

[0070] S2. Obtain the on-site icing pull force value of the line in the icing area through the online monitoring device of the transmission line, and establish a calculation model for the equivalent icing thickness to calculate the equivalent icing thickness of the conductor. Specifically, as figure 2 shown, including

[0071] S21. Establish a static model for calculating the icing of the tower line to calculate the parameters of the icing of the wire

[0072] In the vertical plane (in the X-Y plane) composed of the main tower, the large and small towers and the overhead line, the force model of the overhead line when there is no wind and no external lo...

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Abstract

The invention discloses a power transmission line icing early warning method based on micrometeorological and icing historical data. According to the method, by applying a current online monitoring technology, icing monitoring and environmental micrometeorological monitoring are performed; the icing historical data is compared, so that the icing early warning becomes possible; the construction ofan anti-icing emergency system of a power grid is perfected; the difficult problem of application of the existing icing online monitoring technology is solved; the advantages of all-weather work and high timeless of the of the online monitoring technology are brought into full play; an ice condition acquiring mode mainly based on manual ice observation is turned; an efficient anti-icing early warning system with strong perception capability and fast response is established; and safe operation of the power grid in winter is guaranteed.

Description

technical field [0001] The invention relates to the technical field of early warning, in particular to an icing early warning method for transmission lines based on micro-meteorology and historical icing data. Background technique [0002] In recent years, accidents such as large-area flashovers, hardware damage, line galloping, downed poles, downed towers, broken lines and even large-scale power outages caused by icing on transmission lines have posed a serious threat to the safe operation of the power grid. my country is one of the countries with serious icing on transmission lines. In the large-scale ice and snow disasters in southern my country in early 2008, the national direct economic loss exceeded 100 billion yuan. Therefore, effective prevention and control of ice disasters is the primary issue to ensure the safe operation and development of my country's power grid. . [0003] At present, during the icing season of the power grid, the operation and maintenance unit ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/06G08B19/02
CPCG06Q10/0635G06Q50/06G08B19/02
Inventor 孙萌宋云海周震震王奇张厚荣陈彦州何珏尚佳宁肖耀辉罗征洋
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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