Power frequency online anti-icing and de-icing method for power transmission line

A method of melting ice and a technology of transmission lines, which are applied in the installation of electrical components and cables, overhead installation, etc., can solve problems such as complicated operation, affecting normal power supply, and failure of transmission lines, and achieve improved power factor, simple and convenient use, The effect of eliminating harmonics

Active Publication Date: 2011-08-10
SOUTHWEST JIAOTONG UNIV +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this ice-melting method, the power transmission line does not work (no power transmission to the load) when the ice is melted, which affects the normal power supply, and the operation is complicated

Method used

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  • Power frequency online anti-icing and de-icing method for power transmission line
  • Power frequency online anti-icing and de-icing method for power transmission line
  • Power frequency online anti-icing and de-icing method for power transmission line

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specific Embodiment approach

[0022] figure 1 As shown, a specific embodiment of the present invention is: a method for power transmission line power frequency online anti-icing and thawing, and its specific method is:

[0023] A. In the adjacent left substation and right substation SS M , SS P Connect the left, right and middle dynamic reactive power compensation device SVG on the transmission line between M , SVG P , SVG N , left, right and middle dynamic reactive power compensation device SVG M , SVG P , SVG N They are respectively located in the substation SS on the left M Next to the right substation SS P Panghe two substations SS M , SS P In the middle, a temperature sensor is installed on the transmission line, and the temperature sensor is connected with the left, right and middle dynamic reactive power compensation device SVG M , SVG P , SVG N connected to the controller;

[0024] B. The temperature sensor monitors the temperature of the transmission line. When the detected temperatu...

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Abstract

The invention discloses a power frequency online anti-icing and de-icing method for a power transmission line, which comprises the steps which are as follows: three sets of dynamic reactive power compensation devices are connected with a power transmission line between a left side electric power substation and a right electric power substation which are adjacent; a temperature sensor is arranged on the power transmission line; when the temperature detected by the temperature sensor is lower than 0 DEG C, a controller controls the three sets of dynamic reactive power compensation devices into an anti-icing and de-icing working state; the reactive power compensation device at the left side generates a capacitive reactive current; the dynamic reactive power compensation device at the right side generates a capacitive reactive current; and the dynamic reactive power compensation device in the middle generates an inductive reactive current. The power frequency online anti-icing and de-icing method for the power transmission line can automatically implement anti-icing and de-icing under the conditions that the line is not stopped and the power supply is not influenced, guarantees the line from icing, guarantees the stability and safety of a power supply system under extreme disaster weather conditions such as freezing rain, ice and snow, and improves the running economical efficiency of the power system.

Description

technical field [0001] The invention relates to a power frequency online anti-icing and melting method for power transmission lines. Background technique [0002] Because of its vast land area, my country is one of the countries with the most serious icing on transmission lines in the world. Severe icing of transmission lines will lead to a sharp decline in the mechanical and electrical performance of transmission lines, leading to accidents. There have been icing accidents on transmission lines in Hunan, Hubei, Guizhou, Jiangxi, Yunnan, Sichuan, Henan and Shaanxi provinces in China. Icing accidents have seriously threatened the safe operation of the power system and caused huge economic losses. [0003] The main hazards of icing conductors are: ① Overload. The actual weight of the icing thickness of the wire exceeds the design value by a lot, which leads to mechanical and electrical accidents on the overhead transmission line. ② Accidents of non-scheduled deicing or unev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02G7/16
Inventor 李群湛易东舒泽亮郭锴解绍锋王晓茹周福林
Owner SOUTHWEST JIAOTONG UNIV
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