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首页> 外文期刊>IEEE Transactions on Energy Conversion >Detection and location of interturn short circuits in the stator windings of operating motors
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Detection and location of interturn short circuits in the stator windings of operating motors

机译：检测和定位运行中的电机定子绕组中的匝间短路

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摘要

One major cause of motor failures is breakdown of the turn insulation leading to puncture of the groundwall. Early detection of interturn shorts during motor operation would eliminate consequential damage to adjacent coils and the stator core reducing repair costs and motor outage time. In addition to the benefits gained from early detection of turn insulation breakdown, significant advantages would accrue by locating the faulted coil within the stator winding. Fault location would not only increase the speed of the repair, but would also permit more optimal scheduling of the repair outage. This work was successful in practically implementing a theory to predict changes in the axial leakage flux resulting from stator winding interturn shorts and in developing an algorithm to locate the position of the faulted coil. An experimental setup consisting of a 200 hp motor loaded by a generator was used to validate this theory. Suitable transducers were developed and installed on this motor. Measurement using this experimental configuration clearly validated the theoretical model. On the basis of this experimental work an instrument to continuously monitor for shorted turns is under development.
机译：电机故障的主要原因之一是匝间绝缘层破裂，导致接地壁刺穿。在电动机运行期间及早发现匝间短路将消除对相邻线圈和定子铁芯的后续损坏，从而减少维修成本和电动机中断时间。除了尽早发现匝间绝缘击穿而获得的好处之外，通过将故障线圈定位在定子绕组内还可以获得显着的好处。故障定位不仅可以提高维修速度，而且可以使维修中断的调度更为优化。这项工作成功地实践了理论以预测由定子绕组匝间短路引起的轴向漏磁通量的变化，并成功开发了定位故障线圈位置的算法。由发电机加载的200 hp电动机组成的实验装置用于验证该理论。开发了合适​​的传感器并将其安装在此电动机上。使用该实验配置进行的测量清楚地验证了理论模型。在这项实验工作的基础上，正在开发一种能够持续监测短路情况的仪器。

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