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Dustproof device for transformer and voltage design method of dust collecting electrode thereof

The technology of a dust-proof device and design method, which is applied in the field of high-voltage power equipment, can solve problems such as abnormal heating of transformers, achieve the effects of solving abnormal heating, improving dust removal effect, and simple overall structure

Active Publication Date: 2019-05-17
STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In view of the above problems, the present invention proposes a transformer dust-proof device and its design method for dust-collecting electrode voltage. Based on the three objectives of electric field strength, dust particle charge and dust removal efficiency, an optimal dust-collecting electrode voltage optimization model is designed, which can effectively Filter out the dust sucked into the cooler, improve the dust removal effect, and effectively solve the problem of abnormal heat generation when the transformer is working

Method used

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  • Dustproof device for transformer and voltage design method of dust collecting electrode thereof
  • Dustproof device for transformer and voltage design method of dust collecting electrode thereof
  • Dustproof device for transformer and voltage design method of dust collecting electrode thereof

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Embodiment 1

[0048] Such as figure 1 As shown, the embodiment of the present invention provides a transformer dustproof device, including: frame 1, dust collecting pole 2, corona pole 3 and power supply box 4;

[0049] The frame 1 is used to be installed on the cooler of the transformer; in a specific implementation manner of the embodiment of the present invention, the cross section of the frame 1 is rectangular, including four sides connected in sequence;

[0050] The dust collecting pole 2 is arranged on the frame 1 and connected to the positive pole of the power supply box 4 for absorbing the dust sucked into the cooler; The dust electrode 2 adopts a metal plate with a certain thickness;

[0051] The corona electrode 3 is arranged on the frame 1, and it is arranged in parallel with the dust collecting electrode 2, preferably, it is located between adjacent dust collecting electrodes 2, that is, the number of dust collecting electrodes 2 is more than that of the corona electrode. 3 mo...

Embodiment 2

[0060] An embodiment of the present invention provides a dust-proof device dust collector voltage design method, which specifically includes the following steps:

[0061] Step (1): Establish a mathematical model of the electric field strength e(v) changing with the dust collector voltage v in the dustproof device of the transformer; in a specific implementation of the embodiments of the present invention, it is specifically:

[0062] When the voltage of the dust-collecting pole of the transformer dust-proof device is v, the electric field intensity e(v) in the transformer dust-proof device is:

[0063]

[0064] In the formula, L C Indicates the distance between the dust collecting pole and the corona pole;

[0065] The expression of the dust collector voltage v is:

[0066]

[0067] Among them, δ represents the relative density of air, m represents the correction coefficient, L D Indicates the diameter of the corona wire;

[0068] Step (2): Establish a mathematical m...

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Abstract

The present invention discloses a dustproof device for a transformer and a voltage design method of a dust collecting electrode thereof. The dustproof device comprises a frame, a power box, a dust collecting electrode and a corona electrode. The frame is mounted on a cooler of the transformer; the dust collecting electrode is arranged on the frame and connected with a positive electrode of the power box for adsorbing the dust sucked into the cooler; the corona electrode is arranged on the frame in parallel with the dust collecting electrode, connected with the negative electrode of the power box and is formed by staggered vertical corona wires and transverse corona wires. The invention designs an optimal voltage model of the dust collecting electrode based on the three objectives of electric field strength, dust particle charge and dust removal efficiency; the dust sucked into the cooler can be effectively filtered out; the dust removal effect is improved; and the problem of abnormal heating of the transformer during operation can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of high-voltage electric equipment, and in particular relates to a transformer dust-proof device and a dust-collecting electrode voltage design method thereof. Background technique [0002] With the rapid development of the economy, the electricity consumption of the whole society is increasing year by year. In order to meet the electricity demand of the society, the scale of the power system is rapidly expanding, and the ±800kV converter stations, 1000kV substations and 500kV substations are increasing day by day. As the core equipment in the entire substation, the transformer affects the safe transmission of electric energy. Due to the large capacity and high heat generation, high-voltage transformers generally use air-cooled coolers to dissipate heat, and use fans to draw air forcefully. Therefore, sundries such as poplar flocs are often sucked into the equipment by using them, causing a layer of flocs to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B03C3/04B03C3/47B03C3/41B03C3/66G06F17/50
Inventor 陈昊谭风雷刘柱揆张海华朱超陶玉波张珺珲许驰
Owner STATE GRID JIANGSU ELECTRIC POWER CO LTD MAINTENANCE BRANCH