Advanced Transformer Winding Deformation Diagnosis: Moving from Off-line to On-line
Advanced Transformer Winding Deformation Diagnosis: Moving from Off-line to On-line
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DOI：
10.1109/tdei.2012.6396941
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发表时间：
2012-12-01
影响因子：
3.1
通讯作者：
Blackburn, Trevor
中科院分区：
文献类型：
--
作者：
Bagheri, Mehdi;Naderi, Mohammad Salay;Blackburn, Trevor
近十年来，变压器的在线监测和诊断得到了广泛的研究和讨论。本研究集中于在线变压器绕组变形诊断将应用于各种技术的变压器时出现的问题。从技术角度来看，在用在线方法并最终用智能方法取代离线方法之前，必须解决和克服实际挑战。因此，对现有的离线变压器绕组变形诊断方法进行了详细讨论。研究了在线短路阻抗测量的数学计算。提出了在线变压器传递函数测量装置。深入洞察与在线变压器绕组变形识别方法相关的问题，描述现有在线方法的特征，解释在线测量背后的概念，并努力打开应对挑战的讨论之门。最后以400 MVA升压变压器为例，以阐明频率响应分析（FRA）方法在故障检测方面的能力，而短路阻抗只能展示对变压器状况的一些粗略了解。
On-line monitoring and diagnosis of transformers have been investigated and discussed significantly in last decade. This study has concentrated on issues arising while on-line transformer winding deformation diagnosis is going to be applied on transformers with various kinds of techniques. From technical perspective, before replacing off-line methods by on-line methods and eventually by intelligent approaches, practical challenges must be addressed and overcome. Hence, available off-line transformer winding deformation diagnosis methods are discussed precisely. Mathematical calculation in on-line short circuit impedance measurement is investigated. On-line transformer transfer function measurement setup is presented. A profound insight to the problems pertaining on-line transformer winding deformation recognition methods, characterizes existing online methods, explains the concepts behind online measurements and striving to open the discussion doors towards challenges are discussed. In the end a 400 MVA step up transformer has been taken as a case in order to clarify the capability of Frequency Response Analysis (FRA) method in fault detection while short circuit impedance could only demonstrate some rough understanding about transformer condition.