The importance of generator operating conditions on PD data evaluation

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI:10.1109/ELINSL.2002.996006

H. van Breen, E. Gulski, J. Smit, H. Verhaart, W. de Leeuw

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引用次数: 11

Abstract

This paper summarizes the results of a preliminary study on the influence of generator operating conditions on its partial discharge (PD) activity. This study covers results from the field measurements as well as from laboratory investigations. The turbo generator discussed in this paper showed an extra PD source at high temperature. This extra PD source was activated at high temperatures and vanished at lower temperatures. The activation and the de-activation process had a clear hysteresis character. Both the measurements on the turbo generator and in the laboratory showed that there is certain dependence between the internal PD and the actual temperature of the stator coil. Due to the fact that in practice the moment at which a periodic measurement is performed does not always represent the PD activity of a generator under all its operating conditions, it is of practical interest to investigate the dependences between the power, temperature and the actual PD activity. A full investigation into the relation between generator operating conditions and its PD activity is justified.

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发电机运行工况对PD数据评估的重要性

本文综述了发电机运行条件对其局部放电(PD)活性影响的初步研究结果。这项研究涵盖了现场测量和实验室调查的结果。本文所讨论的汽轮发电机在高温下显示出一个额外的PD源。这种额外的PD源在高温下被激活，在较低的温度下消失。激活和去激活过程具有明显的滞后特征。在汽轮发电机和实验室的测量表明，内部PD与定子线圈的实际温度之间存在一定的相关性。由于在实践中，执行周期性测量的时刻并不总是代表发电机在其所有工作条件下的局部放电活动，因此研究功率，温度和实际局部放电活动之间的依赖关系具有实际意义。充分调查发电机运行条件与其PD活动之间的关系是合理的。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)

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