谐波对变压器寿命损耗的影响

Conference Record of the 2006 IEEE International Symposium on Electrical Insulation Pub Date : 2006-06-11 DOI:10.1109/ELINSL.2006.1665344

A. Elmoudi, M. Lehtonen, H. Nordman

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引用次数: 83

摘要

在电力系统中使用非线性(固态)负载增加了人们对由于损耗增加而可能降低变压器寿命的认识。制造商和用户一直在使用IEEE C57.110-1989，该标准给出了变压器负载能力的保守估计。本文讨论了谐波对变压器的影响，提出了一个预测变压器热点温度的热模型。该模型考虑了时变的谐波负荷周期和环境温度。该模型应用于31.5 MVA、115times1.67% /6.3 kV的ONAF变压器

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Effect of harmonics on transformers loss of life

The use of non-linear (solid state) loads in power system has increased the awareness of the potential reduction of a transformer life due to the increased losses. Manufacturers and users have been applying IEEE C57.110-1989 which gives a conservative estimate of loading capability of transformers. In this paper, the effect of harmonics on transformers is discussed and a thermal model to predict a transformer hot spot temperature is presented. The model considers a time varying harmonic load cycle and ambient temperature. The model is applied on 31.5 MVA, 115times9times1.67%/6.3 kV ONAF transformer

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Conference Record of the 2006 IEEE International Symposium on Electrical Insulation

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