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Experimental control method for evaluating service life of transformer oil

A technology of transformer oil and control method, applied in the direction of material thermal development, etc., can solve the problems of inability to simulate the application environment of transformer oil, failure to protect, etc., and achieve the effects of correct results, precise control, and high system reliability.

Inactive Publication Date: 2012-03-21
CHINA PETROLEUM & CHEM CORP
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the problem existing in the prior art that only controls the sample temperature and oxygen flow rate, cannot truly simulate the actual application environment of transformer oil, and cannot protect against faults. A new control method for testing the service life of transformer oil

Method used

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  • Experimental control method for evaluating service life of transformer oil
  • Experimental control method for evaluating service life of transformer oil
  • Experimental control method for evaluating service life of transformer oil

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Experimental program
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Effect test

Embodiment 1

[0053] Attached figure 1 And attached figure 2 The test control method designed to evaluate the service life of transformer oil has been operated continuously for 8,500 hours in the actual test, and the control of various test parameters is stable. The temperature is 95°C, the oxygen flow rate is 34 ml / min, and the transformer operating voltage is 330 volts. , The test voltage is 8100 volts. The error of temperature control is less than 0.5%, and the error of oxygen flow control is less than 0.3%. The long-term durability test of the system is safe, reliable and error-free, with zero failure rate. There is no need to worry about the high test risk of high temperature and high pressure and the high test cost of 24-hour manual duty.

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Abstract

The invention relates to an experimental control method for evaluating service life of transformer oil, which mainly resolves the problems that in the prior art, only sample temperature and oxygen flow can be controlled, practical application environment of the transformer oil can not be simulated really, and fault protection can not be achieved. A temperature sensor is adopted to sample experimental temperature of the transformer oil, a gas quality flow sensor is adopted to sample oxygen flow supplied into the transformer oil, a voltage transducer is adopted to sample working voltage of a transformer, and a high voltage transducer is adopted to sample experimental high voltage. Sampled temperature, oxygen flow, working voltage of the transformer and experimental voltage information are inputted into a computer. The computer is communicated with a temperature control digital instrument, a gas quantity flow meter, an alternating current voltage stabilizer and an experimental high voltage instrument, thereby achieving the aims of automatic control and fault protection of temperature oxygen flow, working voltage of the transformer and experimental high voltage. The experimental control method for evaluating service life of transformer oil can be applied to evaluation experiments of service life of the transformer oil.

Description

technical field [0001] The invention relates to a test control method for evaluating the service life of transformer oil. Background technique [0002] Transformer oil is one of the basic materials used in power transmission systems. It mainly plays the role of insulation and cooling in oil-filled electrical equipment such as transformers, reactors, transformers, and switches. Due to the influence of oxygen, temperature, electric field, metal, insulating materials and other factors in the process of power transmission and transformation of electrical equipment, the transformer oil will undergo chemical reactions such as oxidation and cracking to generate a large amount of peroxides and alcohols, aldehydes, ketones, Acid and other oxides, and then generate insoluble matter such as oil sludge through condensation reaction, resulting in deterioration of oil quality and reduced service life. Therefore, the anti-oxidation performance of transformer oil is an important quality in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N25/22
Inventor 傅继瑜俞巧珍傅树琴郭志瑾
Owner CHINA PETROLEUM & CHEM CORP
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