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首页> 外文会议>International Conference on Probabilistic Methods Applied to Power Systems >Modelling transformer short-circuit reliability using multi-stress accelerated test data
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Modelling transformer short-circuit reliability using multi-stress accelerated test data

机译：使用多应力加速测试数据建模变压器短路可靠性

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The high level of reliability experienced by power transformers has led to the situation that a large number of aged units are still operating in the power systems. However, uncertainty on how transformers behave when aged causes concerns over the existence of possible hidden failure modes, which have yet to be revealed by failure data. In order to establish whether aged transformers are able to maintain their operational capability when exposed to system events, such as short-circuits, multi-stress parameter analysis is required. In this paper the procedure of modelling multi-stress accelerated test data is demonstrated by using the results of a previously published paper concerning the combined effect of ageing and short-circuit forces. The results are subsequently used to determine the short-circuit reliability of transformers, through the use of a cumulative damage model. It is shown that reliability models can be constructed and justified based on an understanding of the failure mode. However, application of the results remains tentative due to the recognised shortcomings of the modelling procedure.
机译：电力变压器经历的高水平可靠性导致大量老年单位仍在电力系统中运行的情况。但是，当变形金刚在老年后如何表现出不确定性的不确定性因存在可能的隐藏失败模式而涉及，这尚未被故障数据透露。为了确定老化变压器是否能够在暴露于系统事件时能够保持其运行能力，例如短路，需要多应力参数分析。本文通过使用关于老化和短路力的组合效果的先前公布的文章的结果来证明建模多应力加速测试数据的步骤。随后使用累积损伤模型来确定变压器的短路可靠性。结果表明，基于对故障模式的理解，可以构造和证明可靠性模型。然而，由于建模程序的公认缺点，结果仍然暂定暂定。

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