Intelligent anti-icing deicing system and method for high-voltage transmission line

Abstract

The invention provides an intelligent anti-icing deicing system and method for a high-voltage transmission line. The intelligent anti-icing deicing system comprises an alternating-current up-conversion module, an alternating-current down-converting module, an ice coating detection device, a frequency measurement meter, an up-conversion control module and an alternating-current down-conversion control module, wherein the alternating-current up-conversion module is arranged at the front end of an ice-coated circuit, the alternating-current down-converting module us arranged at the back end of ice-coated circuit, the ice coating detection device is arranged on the ice-coated circuit, the frequency measurement meter is arranged at the output end of the down-conversion module, the up-conversion control module is used for receiving a signal sent by the ice coating detection device and controlling the up-conversion module, and the alternating-current down-conversion control module is used for receiving a signal sent by the frequency measurement meter and controlling the alternating-current down-conversion module. In the invention, alternating-direct current is converted into high-frequency alternating current by utilizing the skin effect, so that the ice-coated circuit generates more heat; anti-icing and deicing is carried out through the heat generated by the ice-coated circuit;and deicing frequency is selected in intelligent grade according to change of meteorological conditions, without affecting power transmission and supply, so as to settle circuit ice coating with minimal energy consumption, and thus not only anti-icing but also deicing can be achieved. The intelligent anti-icing deicing system has simple structure and strong implementation, and can be widely applied tohigh-voltage transmission lines in areas with frequent snow disasters.

Description

technical field [0001] The invention relates to a high-voltage transmission line deicing system and method. Background technique [0002] With the abnormal changes in the global climate, icing disasters on transmission lines have become more frequent in recent years, and the problem of icing on transmission lines has become more prominent. For example, in 2008, icing on transmission lines caused large-scale collapse of transmission towers, and the power grid was basically completely damaged, affecting more than 100 million people. Domestic electricity consumption directly affects the national economic loss of more than 40 billion yuan. Electricity is the lifeblood of the national economy, so it is imminent to solve the problem of icing on transmission lines. [0003] The mechanism of damage caused by icing is not the same, and the current methods to solve the icing of transmission lines are also various, but the current methods such as mechanical deicing, short-circuit deic...

AI Technical Summary

Problems solved by technology

[0004] To sum up, the ideas to solve the problem of icing can be divided into anti-icing technology and ice-melting technology, but the current method to solve the icing of transmission lines can only be anti-icing or deicing, not both

First of all, manual operation is difficult to grasp the best deicing period, and deicing will inevitably cause other damage to the power transmission system

For example, in the current short circuit deicing method, a short circuit is carried out between two towers. When the short circuit generates a large current and heat generation in the transmission line, it will inevitably generate a huge magnetic field, which will cause a huge torque on the transmission line and cause a large swing of the line.

Since the ice can only be melted when the line is iced to a certain extent, it cannot be prevented from the source of the line ice, so this method cannot effectively prevent the line from jumping when the ice does not fall off at the same time, and cannot prevent the wire from being on the insulator. ice flash accident

However, the current mechanical deicing method only stays in partial deicing and cannot stop it from the source, and all kinds of mechanical deicing methods will damage the transmission lines to varying degrees

[0005] A kind of tuned frequency conversion short-circuit melting ice proposed recently can't melt ice at the same time as power supply, can't use the electric energy transmitted by the transmission line itself, and needs another power supply, which makes it inconvenient to use in some mountainous areas, and the special geographical and climatic environment of mountainous areas Most of them are areas prone to disasters

Moreover, many deicing methods are not intelligent control, and the deicing with the lowest power consumption cannot be performed according to the amount of ice.

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