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专利名称：Method And Device For Enhancing The
Reliability Of Generator Ground FaultDetection On A Rotating Electrical Machine
发明人：Henrik Johansson,Joseph Menezes,Stefan
Roxenborg,Tord Bengtsson
申请号：US13972305申请日：20130821
公开号：US20130335097A1公开日：20131219
专利附图：
摘要：A method for enhancing the reliability of generator ground fault detection
based on a signal injection scheme, wherein the generator includes a winding. Themethod includes injecting a test signal at a predefined frequency to the winding,measuring an electrical quantity of a response signal in the winding resulted from theinjected test signal, and detecting a ground fault based on the measured value of theelectrical quantity. The method further includes continuously determining the frequencyof the response signal, and discarding the present measured value corresponding to thedetermined frequency when the determined frequency deviates from the predefinedfrequency with a first threshold value.
申请人：Henrik Johansson,Joseph Menezes,Stefan Roxenborg,Tord Bengtsson
地址：Vasteras SE,Vasteras SE,Vasteras SE,Vasteras SE
国籍：SE,SE,SE,SE
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