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首页> 外文期刊>IEEE Industry Applications Magazine >Starting Current Analysis in Medium Voltage Induction Motors: Detecting Rotor Faults and Reactor Starting Defects
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Starting Current Analysis in Medium Voltage Induction Motors: Detecting Rotor Faults and Reactor Starting Defects

机译：中压感应电动机的启动电流分析：检测转子故障和电抗器启动缺陷

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摘要

The failure of Medium Voltage (MV) induction motors is a major concern in the steel industry since it can cause an unplanned outage resulting in significant economic consequences. Predictive maintenance based on offline and online testing of the induction motors is critical for maintaining reliable, efficient, and safe plant operations. Many years of experience has indicated that the MV induction motor failure rate can be reduced with periodic motor testing, resulting in improved plant reliability and productivity. It has been observed that false fault indications are commonly produced by commercially available test equipment. Considering that the application of multiple types of tests can improve outcome reliability, the effectiveness of a new test approach based on the analysis of the motor starting current was investigated for detecting defects in the rotor cage and reactor starting. An analysis of the starting data obtained from 614-MV induction motors operating at a steel mill over the past 10+ years showed that these two types of faults were present in 45-MV motors. Five successful case studies of rotor cage and four cases of reactor starting defects are presented in this article to demonstrate the advantages of starting current analysis for induction motor monitoring.
机译：中压（MV）感应电动机的故障是钢铁行业的主要问题，因为它可能导致计划外的停机，从而导致重大的经济后果。基于对感应电动机的离线和在线测试的预测性维护对于维护可靠，高效和安全的工厂运行至关重要。多年的经验表明，通过定期的电动机测试可以降低MV感应电动机的故障率，从而提高工厂的可靠性和生产率。已经观察到，错误的故障指示通常由市售的测试设备产生。考虑到使用多种类型的测试可以提高结果的可靠性，因此研究了一种基于电动机启动电流分析的新测试方法的有效性，该方法可用于检测转子笼和电抗器启动中的缺陷。对过去10多年来在一家钢厂运行的614-MV感应电动机的启动数据进行的分析表明，这两种类型的故障都存在于45-MV电动机中。本文介绍了五个成功的转子笼案例研究和四个案例反应堆启动缺陷案例，以证明启动电流分析在感应电动机监控中的优势。

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