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Optimal configuration method for preventing icing flashover of transmission line composite insulator

A technology for composite insulators and optimized configuration, which is applied in the direction of testing dielectric strength, can solve problems such as insulator ice flash accidents, and achieve the effects of ensuring safe operation, promoting stable development, and strengthening the value of promotion and application

Active Publication Date: 2012-07-18
DANDONG ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY +1
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  • Description
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Problems solved by technology

[0005] Aiming at the problems existing in the above-mentioned prior art, the present invention provides an optimal configuration method for anti-icing flashover of composite insulators of transmission lines, which solves the problem of occasional occurrence of insulator ice flashing accidents in the prior art

Method used

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  • Optimal configuration method for preventing icing flashover of transmission line composite insulator
  • Optimal configuration method for preventing icing flashover of transmission line composite insulator
  • Optimal configuration method for preventing icing flashover of transmission line composite insulator

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Embodiment

[0035] Choose two kinds of composite insulators commonly used on 66kV lines, which are ordinary umbrella-type composite insulators FXBW 3 -66 and large creepage type composite insulator X1, the specific size is as follows figure 1 and Table 1.

[0036] Such as figure 2 As shown, the composite insulator is subjected to the pollution flashover test in steam hot fog by using the boost method. The composite insulator is placed in the fog chamber, waiting for it to be saturated and damp, and a constant voltage is applied to make it flashover. The same test is carried out several times, and finally Take the average value of 10 values ​​as the pollution flashover voltage.

[0037] Composite insulators are subjected to flashover tests under the environmental conditions of fog, ice, and secondary pollution after ice. The test chamber of the artificial ice-covered climate chamber is a cylindrical tank, and the internal structure is as follows: image 3 shown. The auxiliary system ...

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Abstract

The invention relates to an optimal configuration method for preventing icing flashover of a transmission line composite insulator, and is mainly used for preventing icing flashover of a transmission line composite insulator in the North. The method comprises the following steps of performing a pollution flashover test and a flashover test, obtaining a pollution flashover voltage and a flashover voltage, and then calculating the optimal length of an insulator chain through a formula. With the adoption of the method provided by the invention, the problem that the insulator icing flashover accident happens is solved, guarantee is provided for the safe operation of the transmission line and substation equipment, the safe operation of a power grid is ensured, the stable development of society and economy is promoted, thus the method has extremely strong promotion and application values.

Description

technical field [0001] The invention relates to a configuration method of transmission line insulators, in particular to an optimal configuration method for anti-icing flashover of transmission line composite insulators under light ice-covered conditions. . Background technique [0002] Composite insulators have excellent pollution resistance, and can maintain good insulation performance for a long time and operate safely in dirty and high-humidity environments. They are more and more widely used in power systems. Various types of power equipment in the national power grid , Most of the newly built lines and reconstructed lines mainly use composite insulators. [0003] In the winter and spring seasons in the eastern and northern (especially coastal) regions of the country, especially in recent years, due to the intensification of environmental pollution, low temperature weather frequently occurs repeatedly and lasts for a week or two or even longer. During this period, the...

Claims

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Application Information

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IPC IPC(8): G01R31/12
Inventor 崔文军李君民于鑫贾志东苏华锋
Owner DANDONG ELECTRIC POWER SUPPLY COMPANY OF STATE GRID LIAONING ELECTRIC POWER SUPPLY
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