Design method of transformer accident oil discharge similarity reduced scale model

By designing the transformer accident oil discharge similarity scale model, the problems of high costs and non-repeatability in the existing technology are solved, and the effect of reducing experimental costs and improving data authenticity is achieved, providing an effective reference for the design of accident oil discharge system.

CN119647135AActive Publication Date: 2025-03-18KUNMING UNIV OF SCI & TECH
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Patent Information

Application Number
CN202411811541.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-10
Publication Date
2025-03-18
Estimated Expiration
2044-12-10

AI Technical Summary

Technical Problem

In the prior art, studying oil discharge problems after the explosion of a transformer usually depends on high-cost level experiments or numerical simulations, and lacks repeatability and high precision.

Method used

A transformer accident oil discharge similarity scale model is designed. By calculating the dimensionless parameters of the prototype transformer and the accident oil storage pit, a similar relationship between the scale model and the prototype is established to ensure that the scale model has a similar scale to the prototype in terms of liquid level height changes and oil discharge time.

Benefits of technology

It realizes the reduction of cost and repeatability through scale reduction model experiments, reduces the demand for computing resources, and improves the authenticity of data, providing an effective reference for the design and transformation of accident oil drainage systems.

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Abstract

The invention discloses a design method of a transformer accident oil discharge similarity reduced scale model, and aims to solve the problems of high cost, poor repeatability and the like of an existing in-situ or full-scale experiment, the design method is combined with similarity analysis to calculate reduced scale model design parameters under different transformer scales and different similarity ratios. Further calculating the similar scale of the oil discharge process between the reduced scale model and the prototype transformer, and finally manufacturing the reduced scale model according to the design parameters and carrying out an oil discharge experiment. Experimental results show that the method for simulating the oil discharge process of the transformer by adopting the reduced scale model is effective, and the experimental similarity design method provided by the invention can meet the requirements of the reduced scale experiment and can keep a good similarity relationship. In addition, an experimental value obtained by an experiment has good consistency with a theoretical value, and the reduced scale model can be verified by the experiment.
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