Deicing method based on electric transmission line cable deicing robot
A technology of road cables and robots, applied in the field of robotic deicing of power transmission lines, can solve problems such as negative effects of mechanical deicing, tower collapse failures, and exceeding design strength
Active Publication Date: 2014-01-01
STATE GRID CORP OF CHINA +2
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Problems solved by technology
When the icing is serious, the unbalanced force on both sides of the tower will exceed its design strength, resulting in tower failure
When line robot deicing is used, even if the transmission line is not seriously iced, there may be unbalanced forces on the tower that exceed its design strength, which will lead to negative effects of mechanical deicing
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[0042] A non-limiting embodiment is given below in conjunction with the accompanying drawings to further illustrate the invention.
[0043]In the project, it is the trend of future deicing technology to use line deicing robot to deicing the continuous line. A large unbalanced tension difference will be generated. When the unbalanced tension difference is too large to reach the design limit of the tower, the tower will collapse and twist, which will not only fail to effectively de-ice, but also cause secondary accidents. Therefore, the inventor proposes a corresponding deicing method for the feature that the deicing robot can deicing multiple times in one gear line.
[0044] Its deicing method comprises the following steps:
[0045] A. Calculate the horizontal tension of each gear in the transmission line, and obtain the horizontal tension value of each gear when ice is covered;
[0046] B. Compare the horizontal tension values obtained in step A to obtain the one with the ...
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The invention discloses a deicing method based on an electric transmission line cable deicing robot. The electric transmission line cable deicing robot moves to conduct deicing on electric transmission line cables in the deicing process. The deicing method includes the following steps of calculating every spans of horizontal tension of the cables in an electric transmission line to obtain values of the horizontal tension of every spans when the electric transmission line is coated by ice, comparing the obtained values of the horizontal tension of every spans to obtain the maximum value in the values of the horizontal tension of every spans, starting a deicing motor of the deicing robot when the deicing robot moves to the cable with the maximum value in the values of the horizontal tension of every spans to remove half of the ice of the cable with the maximum value in the values of the horizontal tension of every spans, obtaining the maximum value in the rest of the values of the horizontal tension of every spans through the bubbling method, enabling the deicing robot to move to the cable with the maximum value in the rest of the values of the horizontal tension of every spans, and starting the deicing motor of the deicing robot to remove half of the ice of the cable with the maximum value in the rest of the values of the horizontal tension of every spans till the ice coatings of all the cables are totally removed. The deicing method is safe, and unbalanced tension of a tower is reduced in the deicing process.
Description
technical field [0001] The invention relates to a deicing method, in particular to a method suitable for robot deicing of power transmission lines. Background technique [0002] Ice and snow on transmission lines often cause accidents such as line tripping, disconnection, pole down, and insulator flashover. In 2008, extreme ice and snow disasters occurred in southern my country, which caused the outage of more than 36,000 transmission lines of 10kV and above and more than 2,000 substations of 35kV and above, which caused great losses to my country's power grid and national economy. [0003] Since the 1950s, countries around the world have continued to study icing on transmission lines, exploring the mechanism of icing, the conditions for forming icing, and the defense methods for icing disasters. The current deicing methods are mainly divided into thermal deicing methods and mechanical deicing methods. The mechanical deicing method is represented by the development of the r...
Claims
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Inventor 游步新姜丁尤冯云川徐嘉冯豪谢云云张莲花殷明慧
Owner STATE GRID CORP OF CHINA