一种考虑绝缘老化与谐波影响的干式变压器匝间短路多物理场仿真分析方法
By constructing a multiphysics simulation model and combining insulation aging with multi-frequency harmonic excitation, the problem of inaccurate inter-turn short-circuit fault prediction in existing technologies is solved, and accurate analysis and optimized design of fault scenarios for dry-type transformers are realized.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- TAIYUAN UNIVERSITY OF TECHNOLOGY
- Filing Date
- 2025-04-22
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies fail to effectively consider insulation aging and harmonic effects when analyzing inter-turn short-circuit faults in dry-type transformers, resulting in an inability to accurately predict the fault evolution process and electromagnetic stress distribution. They also neglect the complex excitation scenarios and performance degradation of insulation materials in actual operating environments.
A multiphysics simulation model is constructed, which combines insulation aging and multi-frequency harmonic excitation. Through high-precision parameter assignment and visualization post-processing, the current density redistribution, local hot spot migration and magnetic flux anomaly of dry transformer under inter-turn short circuit fault are simulated, so as to achieve accurate prediction of fault scenarios.
It improves the accuracy of performance prediction under fault conditions of dry-type transformers, provides theoretical support for fault identification, structural optimization and thermal failure assessment, and enhances the operational reliability and safety of the equipment.
Smart Images
Figure CN120337668B_ABST