Principles of power factor testing of complete generator stator windings

Conference Record of the 2004 IEEE International Symposium on Electrical Insulation Pub Date : 2004-09-19 DOI:10.1109/ELINSL.2004.1380628

F. Emery

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Abstract

This is a follow up to a paper presented at the 2002 ISEI Symposium. IEEE 286-2000 -"Recommended Practice for Measurement of Power Factor Tip-Up of Electric Machinery Stator Coil Insulation" provides a section devoted to the power factor testing of complete generator stator windings. This work will review IEEE 286-2000 recommended procedures and present actual findings when these procedures are implemented. Power factor testing of complete stator windings provides data that is limited in its scope and value. Careful analysis of the data is very important and an understanding of what the data is indicating must be interpreted correctly to obtain meaningful results. Power factor data taken on individual stator coils are compared with power factor data measure on complete phase groups in a stator. The effect exhibited by guard electrodes is presented in order to obtain a better understanding of the resulting data. It is the purpose of this paper to draw attention to the value and the limitations of the power factor test when performed on complete windings.

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发电机定子绕组整机功率因数测试原理

这是在2002年ISEI研讨会上发表的一篇论文的后续文章。IEEE 286-2000 -“电机定子线圈绝缘功率因数上升测量推荐规程”提供了一个专门用于完整发电机定子绕组功率因数测试的部分。这项工作将回顾IEEE 286-2000推荐的程序，并在实施这些程序时提出实际的发现。完整定子绕组的功率因数测试提供的数据在其范围和价值上是有限的。仔细分析数据是非常重要的，并且必须正确解释数据所表明的内容，以获得有意义的结果。将单个定子线圈的功率因数数据与定子完整相组的功率因数数据进行了比较。为了更好地理解所得到的数据，提出了保护电极所表现出的效果。本文的目的是引起人们对在完整绕组上进行功率因数测试的价值和局限性的注意。

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 2004 IEEE International Symposium on Electrical Insulation

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