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Method for treating insulating oil for transformer

A transformer insulating oil and treatment method technology, applied in the direction of transformer/inductor cooling, etc., can solve the problems of long treatment time, incomplete removal of moisture and impurities, and low filtration accuracy, and achieve the effect of short treatment time

Inactive Publication Date: 2011-07-27
CHINA GEZHOUBA GRP MECHANICAL & ELECTRICAL CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the existing vacuum oil filter has the disadvantages of insufficient vacuum degree and low filtration accuracy, which leads to incomplete removal of moisture and impurities, and the processing time is also long, especially for large-capacity power transformers with voltage levels of 750kv and above , The treatment of insulating oil in the on-site installation of reactors does not meet the engineering requirements

Method used

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  • Method for treating insulating oil for transformer
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Effect test

Embodiment 1

[0024] A processing method for transformer insulating oil, the method comprises the following three steps:

[0025] First-stage oil treatment: use pressure oil filter 1 to filter the particle size and impurities in the insulating oil under pressure;

[0026] Second-stage oil treatment: use the first vacuum oil filter 3 to vacuum degas and dehydrate the insulating oil treated by the first stage;

[0027] The third stage oil treatment: use the second vacuum oil filter 5 to inject the insulating oil treated by the second stage into the transformer, and perform hot oil circulation degassing and dehydration treatment to dry the transformer 6 .

[0028] like figure 1 As shown, the treatment method of 750kv power transformer insulating oil includes three steps, and its specific implementation method is: the first-stage oil treatment method: connect the oil outlet pipe of the pressure oil filter 1 to the inlet at the top of the first oil tank 2 Oil valve, the oil inlet pipe of the p...

Embodiment 2

[0034] A processing method for 850kv power transformer insulating oil, the method comprises the following three steps:

[0035] First-stage oil treatment: use pressure oil filter 1 to filter the particle size and impurities in the insulating oil under pressure;

[0036] Second-stage oil treatment: use the first vacuum oil filter 3 to vacuum degas and dehydrate the insulating oil treated by the first stage;

[0037] The third stage oil treatment: use the second vacuum oil filter 5 to inject the insulating oil treated by the second stage into the transformer, and perform hot oil circulation degassing and dehydration treatment to dry the transformer 6 .

[0038] Same as Example 1, press figure 1 Connect the equipment as shown, so that the main control indicators: oil insulation electric strength, moisture content, gas content and dielectric loss, etc. meet the standard value of the 850kv transformer voltage level. The implementation effect of this embodiment is the same as that...

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Abstract

The invention relates to a method for treating insulating oil for a transformer. The method comprises the following three treatment steps: first-stage oil treatment: using a pressure oil filter to carry out pressure filtering on granules and impurities in the insulating oil; second-stage oil treatment: using a first vacuum oil filter to carry out vacuum degassing and dewatering on the insulating oil undergoing the first-stage treatment; and third-stage oil treatment: using a second vacuum oil filter to inject the insulating oil undergoing the first-stage and second-stage treatment into a transformer to undergo cyclic hot oil degassing and dewatering treatment to dry the transformer. The method has the following beneficial effects: the insulating oil is independently treated by stages; after the technical indexes of the oil reach the specified values, the oil is injected into the machines on the next stages to be treated until the indexes of the oil undergoing the third-stage treatment are qualified; respective advantages of pressure filtering and vacuum filtering are fully and reasonably used; and the method is especially suitable for treating the insulating oil during field installation of high-capacity power transformers and reactors with voltage being 750KV and above.

Description

technical field [0001] The invention relates to a treatment method for insulating oil in a power system, in particular to a treatment method for transformer insulating oil. Background technique [0002] Insulating oil is mainly composed of high-quality epoxy resin and special solvents, and is mainly used in many different equipment and products in the field of power transmission and power generation, such as power transformers, distribution transformers, design protection circuit boards, computer parts, switches devices and reactors, etc. Because insulating oil has excellent waterproof, moisture-proof, dust-proof, anti-corrosion, anti-aging and other characteristics, it is widely used in the insulation protection of electronic components. [0003] In the construction of power transformers, in order to improve the insulation strength, trace moisture content, gas content, dielectric loss coefficient and other indicators of the insulating oil, the transformer insulating oil mu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01F27/14
Inventor 陈训耀韩满国曾建洲
Owner CHINA GEZHOUBA GRP MECHANICAL & ELECTRICAL CONSTR
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