评估灭弧介质燃弧时固态碳产生判据的方法及相关装置

By using density functional theory and an improved Gibbs free energy minimization method, the criteria for solid carbon generation during arc extinguishing medium arcing are evaluated, solving the problem of existing algorithms ignoring solid carbon and realizing effective control of solid carbon generation, thus protecting the insulation performance of circuit breakers.

CN115719621BActive Publication Date: 2026-07-17XI AN JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
XI AN JIAOTONG UNIV
Filing Date
2022-11-15
Publication Date
2026-07-17

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Abstract

本发明公开了一种评估灭弧介质燃弧时固态碳产生判据的方法及相关装置，基于密度泛函理论，在适当的泛函和基组下构建优化分子的几何模型，进行频率分析，计算待研究气体各个粒子的物性参数。根据NIST标准数据格式对各粒子的热力学参数进行拟合。最后基于改进吉布斯自由能最小化方法计算等离子体组分，从而得到燃弧过程中固体碳生成的判据和抑制方法。本发明通过密度泛函理论和改进吉布斯自由能最小化法计算分析了不同初始比例的氧气对固体碳生成的影响，从而通过控制灭弧气体中氧气的含量来抑制固态碳的形成，避免其对安装在断路器中的固体部件表面的电气绝缘性能产生劣化影响。
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