Spraying coating process for preventing interphase short circuit of reactor

An interphase short circuit and reactor technology, applied in circuits, inductance/transformer/magnet manufacturing, coating, etc., can solve the problem of equipment accidents that cannot prevent interphase short circuit, interturn short circuit, economic losses of power users in the power sector, interphase short circuit, turn short-circuit and other problems, to achieve the effect of simple and feasible operation, simple transformation, and elimination of short-circuit faults

Active Publication Date: 2012-05-30
陕西合容电力设备有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, outdoor stacked air-core series reactors and current-limiting reactors operating in substations frequently have small animals such as weasels and cats enter and climb, causing equipment accidents such as phase-to-phase short-circuits and inter-turn short-circuits of series reactors and current-limiting reactors. occurred, seriously affected the safe operation of the power grid, and caused unnecessary economic losses to the power sector and the majority of power users.
However, in the prior art, there is generally no better solution for this, and only a layer of insulating varnish is applied to the outer wall of the reactor. However, this method still cannot prevent the series reactor, limiting The occurrence of equipment accidents such as phase-to-phase short circuit and inter-turn short circuit of flow reactor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] The metal flanges at both ends of the star frame of the reactor and the post insulator are treated with silicone rubber insulating paint. The silicone rubber insulating paint is sprayed 4 to 5 times during the treatment, and the spraying thickness is 2 to 3mm.

[0026] Use short wires to simulate small animals climbing in the reactor interval, and the two ends of the short wires are respectively set on the outside of the star arm coating of the processed star frame.

[0027] Apply a voltage of 12.7kV according to the test requirements, keep the voltage constant after rising to a certain level, cut off the power after 10 seconds, observe whether there is a breakdown point on the outer coating of the star frame on the short-circuit side, and repeat the above test three times. The test results are shown in Table 1:

[0028] Table 1

[0029] serial number

Voltage (kV)

duration(s)

Whether the process is abnormal

Appearance of the coating after the t...

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PUM

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Abstract

The invention discloses a spraying coating process for preventing the interphase short circuit of a reactor. The invention has the technical scheme that the process comprises the following steps: firstly, carrying out conventional trimming work procedure on the reactor; spraying zinc chromate primer and polyurethane ash paint; then, carrying out grinding and cleaning; completely covering a coil and a wiring teminal of the reactor; using a special spray gun for carrying out spraying coating on the exposed metal part of the reactor under the condition of the pressure of 0.6 + / - 0.1 MPa; carrying out secondary spraying coating after the primary spraying coating is completed and the glue liquid surface is vulcanized; and carrying out repeated spraying coating until the coating layer thicknessreaches 2.5 + / - 0.5 mm. At the same time, brushing coating enhancing treatment is carried out at corner angles and turning corners with relatively thin spraying coating thickness. The reactor carrying out the spraying coating by the process can effectively avoid the interphase short circuit accidents caused by bird and beast climbing. The invention can be used for the production of the reactor, and can also be used for reforming the reactors operating in a transformer station, the reformation can be completed without large-scale equipment such as a crane and the like, in addition, the operation is convenient, and the implementation is easy.

Description

technical field [0001] The invention relates to a reactor production process, in particular to a spraying process for preventing phase-to-phase short circuit of the reactor. Background technique [0002] With the acceleration of my country's power grid construction and the expansion of scale, the number of substations is also increasing. In recent years, outdoor stacked air-core series reactors and current-limiting reactors operating in substations frequently have small animals such as weasels and cats enter and climb, causing equipment accidents such as phase-to-phase short-circuits and inter-turn short-circuits of series reactors and current-limiting reactors. It has seriously affected the safe operation of the power grid and caused unnecessary economic losses to the power sector and the majority of power users. However, in the prior art, there is generally no better solution for this, and only a layer of insulating varnish is applied to the outer wall of the reactor. How...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01F41/00B05D1/38B05D3/12
Inventor 刘全峰梁艺超张长久覃朝云王新彤张建军肖志国潘卓王淑慧李良杰安光辉
Owner 陕西合容电力设备有限公司
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