Oil-immersed capacitor bidirectional tensile polypropylene electric heat aging experiment system and method

By designing an electrothermal aging test system for biaxially oriented polypropylene (BOPP) used in oil-immersed capacitors, the problem of unclear electrothermal aging characteristics of BOPP films in existing technologies was solved. This system enables aging experimental research under multi-physical field coupling, improving operational convenience and experimental results.

CN122109654APending Publication Date: 2026-05-29XI AN JIAOTONG UNIV +3
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Filing Date
2024-12-10
Publication Date
2026-05-29

AI Technical Summary

Technical Problem

Existing technologies lack easily operable electrothermal aging equipment, making it impossible to conduct aging tests on BOPP films under the influence of electricity, heat, and impregnating agents, resulting in unclear electrothermal aging characteristics of BOPP films.

Method used

A biaxially oriented polypropylene (BOPP) electrothermal aging test system for oil-immersed capacitors is designed, comprising an electrothermal aging test chamber, a cleaning and drying unit, a circuit unit, a vacuum unit, and an oil injection port. The system ages the BOPP film by applying an electric field, a thermal field, and an impregnating agent, combined with microstructure characterization and electrical performance testing.

Benefits of technology

This method enables aging experiments under multi-physics coupling conditions, is easy to operate, and allows for a better understanding of the electrothermal aging laws and mechanisms of BOPP films.

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Abstract

A kind of oil-immersed capacitor bidirectional tensile polypropylene electric heating aging experiment system and method, in the method, build electric heating aging experiment cavity, electric heating aging experiment cavity is supported on hot stage, the bottom in electric heating aging experiment cavity is equipped with base support;Wash and dry electric heating aging experiment cavity and BOPP film sample;BOPP film sample is placed in electric heating aging experiment cavity, BOPP film sample is clamped and supported in the base support via ground electrode and high voltage electrode, high voltage electrode and ground electrode are connected to direct current power supply via protection resistance;Electric heating aging experiment cavity is pumped and injects benzyl methyl benzene solution, the BOPP film sample is immersed in the benzyl methyl benzene solution in electric heating aging experiment cavity;Hot stage and direct current power supply are opened, record experiment start time and experimental temperature;After electric heating aging experiment, power off, remove BOPP film sample, BOPP film sample is cleaned with alcohol and then bagged for standby.
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