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首页> 外文期刊>International journal of electrical and power engineering >Duval Triangle: A Noble Technique for DGA in Power Transformers
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Duval Triangle: A Noble Technique for DGA in Power Transformers

机译：Duval Triangle：一种用于变压器的DGA的高贵技术

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摘要

Monitoring and fault diagnosis of power transformers has always drawn the attention of all utilities worldwide. It has become important to detect the incipient fault of a power transformer at an early stage, diagnose properly and also to provide the remedies. Dissolved Gas Analyses (DGA) is widely used to detect incipient faults in oil filled power transformers. Various methods are used to interpret DGA results i.e., C.E.G.B. Rogers's ratio, IEC and IEEE ratio codes: Rogers, Dernenburg and Duval triangle methods. In this study, a relationship between the formations of hydrocarbon gases and the specific temperature and their solubility has been presented. For this study, more than couple of 100s of faulty transformer DGA sample reports from the different utilities in India (>10 years) with fault interpretation by different methods are collected. Against the same reports the Duval triangle, a graphical manual and software (MATLAB-7.4) are crossed compared.
机译：电力变压器的监视和故障诊断一直引起全世界所有公用事业的关注。尽早检测电力变压器的初期故障，正确诊断并提供补救措施已经变得很重要。溶解气体分析（DGA）被广泛用于检测充满油的电力变压器中的初期故障。使用多种方法来解释DGA结果，即C.E.G.B。 Rogers的比率，IEC和IEEE比率代码：Rogers，Dernenburg和Duval三角方法。在这项研究中，提出了碳氢化合物气体的形成与特定温度及其溶解度之间的关系。对于本研究，收集了来自印度不同公用事业公司（> 10年）的100多个故障变压器DGA样本报告，并通过不同方法进行了故障解释。针对相同的报告，比较了Duval三角形，图形手册和软件（MATLAB-7.4）。

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