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Method for evaluating adsorption degree of transformer oil paper insulation on-line dehydration molecular sieve

A transformer oil and paper insulation technology, which is applied in scientific instruments, analytical materials, and the use of material absorption and weighing, etc., can solve the problems of large errors and achieve the effects of overcoming large errors, saving manpower, and accurate measurement

Active Publication Date: 2021-04-09
EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID +1
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  • Description
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Problems solved by technology

The method provided by the invention overcomes the defect that the current method for measuring moisture content at the port has relatively large errors, and is accurate in measurement, and can be used in the field working conditions of transformers

Method used

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  • Method for evaluating adsorption degree of transformer oil paper insulation on-line dehydration molecular sieve
  • Method for evaluating adsorption degree of transformer oil paper insulation on-line dehydration molecular sieve
  • Method for evaluating adsorption degree of transformer oil paper insulation on-line dehydration molecular sieve

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Embodiment Construction

[0036] In order to facilitate understanding of the present invention, the present invention enumerates the following examples. It should be clear to those skilled in the art that the implementation examples are only for helping to understand the present invention, and should not be regarded as a specific limitation on the present invention.

[0037] The following describes the specific implementation of the present invention according to the accompanying drawings.

[0038] figure 1 It is a schematic flow chart of the method for evaluating the adsorption degree of molecular sieves for on-line dehydration of transformer oil-paper insulation according to the present invention.

[0039] exist figure 1 , in step T01: Calculate and weigh the mass M of the required molecular sieve according to the excess moisture in the transformer oil-paper insulation system;

[0040] In step T02: put the transformer oil-paper insulation on-line dewatering material adsorption evaluation device in...

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Abstract

The invention relates to a method for evaluating the water absorption degree of a molecular sieve of a transformer oil-paper insulation system. The method comprises the following steps: according to the water content of the converter transformer oil paper insulation system, weighing a certain amount of M molecular sieve material and loading into a drying tank; acquiring data of the weight of the whole dehydration device, including a transformer drying tank, a dehydration material and insulating oil flowing in the transformer drying tank, namely, the weight m0 of the whole dehydration device at the moment t0; in view of the regeneration problem, when the water absorption capacity of the molecular sieve reaches 12% of the self weight of the molecular sieve, i.e., the weight m1 of the whole water removal device at the moment t1, switching the water removal device and carrying out regeneration treatment. According to the invention, the problem of inaccurate moisture measurement by a port method can be solved, the problem of influence of dynamic migration of moisture among insulation paper, insulation oil and a dehydration material on evaluation of the adsorption degree in the dehydration process can also be solved; meanwhile, the purpose of online dehydration of a molecular sieve and transformer oil paper insulation system without shutdown of the device is achieved.

Description

technical field [0001] The invention belongs to the field of on-line drying of oil-paper insulation for large-scale power transformers, and in particular relates to an evaluation method for the adsorption degree of molecular sieves for online dehydration of transformer oil-paper insulation. Background technique [0002] The transformer is the most important primary equipment in the substation. The safe operating life of the transformer mainly depends on the mechanical strength and electrical strength of the insulating material. The insulation material of transformer starts its aging process of insulation material faster or slower from the moment the transformer is produced. The moisture produced during the aging process seriously affects the safe and reliable operation of transformers. [0003] At present, the operation and maintenance theory of transformers is to deal with power outage maintenance or oil filtering, which will not only reduce the reliability of power syste...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02G01N15/08
CPCG01N5/02G01N15/08G01N2015/0866
Inventor 孙勇黎建平杨建新齐波姜克如马宇坤贾丰全罗朋振侯喆杨霄黄猛
Owner EXAMING & EXPERIMENTAL CENT OF ULTRAHIGH VOLTAGE POWER TRANSMISSION COMPANY CHINA SOUTHEN POWER GRID
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