Method for indirectly judging polymerization degree of insulation paper of oil-immersed transformer

An oil-immersed transformer and insulating paper technology, applied in the field of intelligent diagnosis, can solve the problems of lack of online micro-water sensor, low test efficiency, and difficult sampling of aging parts, so as to improve the safety of equipment operation and the personal safety of inspection personnel , Reduce economic losses, reduce maintenance costs and labor costs
CN114397332APending Publication Date: 2022-04-26ZHEJIANG ZHENENG TECHN RES INST +1
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
ZHEJIANG ZHENENG TECHN RES INST
Publication Date
2022-04-26

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Abstract

The invention relates to a method for indirectly judging the polymerization degree of insulation paper of an oil-immersed transformer. The method comprises the following steps: monitoring the content of micro-water in transformer oil by using a thin-film capacitance method; the absolute content of the micro-water in the oil is calculated through the relative humidity based on the indirect measurement method of the micro-water content in the oil with the relative humidity. The system has the advantages that degassing is not needed, the content of dissolved gas hydrogen and micro-water in transformer oil is monitored in real time, and a basis is provided for deriving the polymerization degree of insulation paper. The problems that in traditional polymerization degree detection, on-site paper sampling is needed, sampling is not uniform, the test period is long, the test efficiency is low, samples are dispersed, some aged parts are not easy to sample, and the measurement result cannot reflect the overall insulation aging degree are solved. In the detection process, the equipment does not need to be shut down or disassembled, the maintenance cost and labor cost of the equipment are reduced, the economic loss caused by shutdown is reduced, and the operation safety of the equipment and the personal safety guarantee of inspection personnel are improved.
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Description

technical field

[0001] The invention belongs to the technical field of electric power detection, and in particular relates to an intelligent diagnosis method for indirectly judging the polymerization degree of insulating paper of an oil-immersed transformer through insulating oil detection. Background technique

[0002] The degree of polymerization of cellulose molecules is the number of D-glucose monomers contained in a cellulose molecule (such as Figure 4 shown). The life of oil-immersed transformer actually refers to the life of insulating paper. The criterion for the life of insulating paper mainly depends on the mechanical properties. The aging state of the transformer insulating paper can be judged by testing the degree of polymerization of the insulating paper in the transformer.

[0003] However, the existing method for testing the degree of polymerization of insulating paper in transformers has the following disadvantages: it is necessary to take paper samples on...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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