Composite insulator interface heating source temperature calculation method, system, equipment and medium

By establishing the heat transfer model and temperature mapping relationship of composite insulator sheath, the temperature of the composite insulator interface heat source is calculated, which solves the problem of difficulty in obtaining the temperature of the interface heat source in the prior art, improves the accuracy of the evaluation of the operating state of composite insulators, and reduces the risk of grid safety accidents.

CN119647060APending Publication Date: 2025-03-18ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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Patent Information

Application Number
CN202411572820.8
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-11-06
Publication Date
2025-03-18

AI Technical Summary

Technical Problem

It is difficult for the prior art to directly obtain the temperature of the heat source of the composite insulator core rod-sheath interface, resulting in misjudgment of the operating status of the composite insulator, increasing the risk of grid safety accidents.

Method used

By establishing a composite insulator sheath heat transfer model, the temperature mapping relationship between the inside and outside of the composite insulator is constructed, and the temperature of the interface heat source is calculated using the sheath surface temperature, material parameters and environmental parameters.

Benefits of technology

The accurate calculation of the heat source temperature of the composite insulator interface is achieved, misjudgment is avoided, and the safety and stability of power grid operation and maintenance are improved.

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Abstract

The invention belongs to the technical field of power systems, and discloses a composite insulator interface heating source temperature calculation method, system and device and a medium, and the method comprises the steps: building a composite insulator sheath heat transfer model; based on the composite insulator sheath heat transfer model, constructing a composite insulator internal and external temperature mapping relation; the internal and external temperature mapping relation of the composite insulator is a linear function relation formed by the interface heating source temperature of the composite insulator, the surface temperature of the sheath of the composite insulator, material parameters and environmental parameters; and obtaining the current surface temperature, material parameters and environmental parameters of the composite insulator sheath, and calculating the current interface heating source temperature of the composite insulator based on the internal and external temperature mapping relation of the composite insulator. According to the method, the internal heating temperature of the composite insulator can be calculated, and technical support is provided for operation and maintenance of a power grid department, so that the operation state of the heating composite insulator can be determined conveniently, missed disposal opportunities caused by misjudgment are avoided, and serious power grid safety accidents caused by breakage of the composite insulator are prevented.
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