Using partial discharge measurement technology to implement predictive maintenance in high voltage motor and generator stator windings

1997 IEEE/PCA Cement Industry Technical Conference. XXXIX Conference Record (Cat. No.97CH36076) Pub Date : 1997-04-20 DOI:10.1109/CITCON.1997.599162

G. Stone, J. Kapler

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引用次数: 1

Abstract

Partial discharge (PD) tests can determine which motor and generator stator windings are experiencing insulation problems. A deteriorated winding has a PD activity which can be 30 times or more higher than a winding in good condition. This great difference in PD activity enables even nonspecialized maintenance personnel to identify the few motors or generators in a company which need further investigation and/or maintenance. After implementing on-line partial discharge tests companies can often confidently extend the outage between major machine inspections. This saves on outage costs and reduces the risk of a stator fault due to human error during maintenance. Finally, on older machines, if there has been no increase in partial discharge activity over time, then the life of the stator winding can be confidently extended, saving a considerable capital expenditure. The PD tests discussed cost virtually nothing to perform, once the sensors are installed, since existing company staff can do the tests in about 30 minutes during normal motor or generator operation.

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采用局部放电测量技术对高压电机和发电机定子绕组进行预测性维护

局部放电(PD)测试可以确定哪些电机和发电机定子绕组出现绝缘问题。劣化绕组的PD活性可能比良好绕组高30倍或更多。PD活动的这种巨大差异使非专业维护人员能够识别公司中需要进一步调查和/或维护的少数电机或发电机。在实施在线局部放电测试后，公司通常可以自信地延长主要机器检查之间的停机时间。这节省了停机成本，并降低了由于维护期间人为错误而导致定子故障的风险。最后，在较旧的机器上，如果随着时间的推移，部分放电活动没有增加，那么定子绕组的寿命可以自信地延长，节省了相当大的资本支出。一旦安装了传感器，所讨论的PD测试几乎不需要任何成本，因为现有的公司员工可以在电机或发电机正常运行的情况下，在大约30分钟内完成测试。

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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1997 IEEE/PCA Cement Industry Technical Conference. XXXIX Conference Record (Cat. No.97CH36076)

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