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| 摘要: |
| 基于可拓理论，在传统油中溶解气体分析DGA(Dissolved Gas Analysis)三比值法基础上，提出一种可拓集变压器故障诊断方法。首先，建立三比值法的物元模型，然后给出点对区间的可拓相关函数，利用该函数计算进行变压器故障诊断。仿真计算证明该方法能克服传统三比值法的编码不全，不能诊断多重故障的缺陷，提高了诊断精度。 |
| 关键词: 油中溶解气体分析 可拓集 变压器 故障诊断 |
| DOI： |
| 分类号:TM411 TM855 |
| 基金项目: |
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| Extension set method for power transformer fault diagnosis |
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LI Zheng MA Hong-zhong
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| Abstract: |
| Based on extension theory and conventional DGA(Dissolved Gas Analysis) three-ratio method, the extension set method to diagnose transformer fault is proposed. The matter-element models are established first for the three-ratio method. Then the extended relation functions of a point to an interval are offered, which are used to diagnose transformer faults. Simulation proves that the proposed method can overcome the drawbacks of the conventional three-ratio method,i.e. incomplete coding and lack of multi -fault diagnosis. It enhances diagnosing accuracy. |
| Key words: dissolved gas analysis,extension set,transformer,fault diagnosis |
