The purpose of this study is to determine whether the currently applied condition monitoring (CM) techniques are sufficient and effective for early detection of copper corrosion fault in transformers and to establish a more relevant CM technique for early detection of such fault. In this study, experimental work is carried out by applying appropriate methods on different commercial insulating mineral oils for the detection and identification of additional related by-products of copper corrosion process, if any. The major finding of this experimental investigation includes identification of additional by-products, which could be useful to establish a more effective CM technique. Furthermore, the role of sulphur compounds in copper corrosion fault is considered, and a relevant reaction mechanism of formation CSD is developed based on the findings of the related by-products. It is concluded that, the application of a relevant CM technique is necessary for establishing a cost-effective condition based maintenance (CBM) to minimize the economic losses, hazardous effects on human life and the environment.

中文翻译：

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油浸式变压器绕组腐蚀性硫沉积的相关状态监测

本研究的目的是确定当前应用的状态监测 (CM) 技术是否足以有效地早期检测变压器铜腐蚀故障，并建立更相关的 CM 技术来早期检测此类故障。在这项研究中，通过对不同的商业绝缘矿物油应用适当的方法进行实验工作，以检测和识别铜腐蚀过程的其他相关副产物（如果有）。这项实验研究的主要发现包括对额外副产品的识别，这可能有助于建立更有效的 CM 技术。此外，还考虑了硫化合物在铜腐蚀故障中的作用，并根据相关副产物的发现发展了形成CSD的相关反应机制。结论是，应用相关的 CM 技术对于建立具有成本效益的基于状态的维护 (CBM) 以最大限度地减少经济损失、对人类生活和环境的危害影响是必要的。