| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a system for diagnosing a winding of an electric equipment, which can diagnose the winding making up the electric equipment without disassembling the electric equipment, and if the winding is abnormal, which can diagnose the aspect of the abnormality. <P>SOLUTION: In the system 1 for diagnosing the winding of the electric equipment, a learning progression is carried out, wherein a learning-use winding 2B is connected with terminals T1, T2 in respective set states consisting of a normal state and a plurality of abnormal states, and an impulse voltage is applied to the learning-use winding 2B by using an impulse generating circuit 3. A diagnosing section 6 calculates equivalent circuit constants LC, RC as diagnostic information feature quantities, based on a voltage measured by a voltage measuring section 4, and stores them in a feature quantity space disposed in a memory 7. Similarly, a diagnosing progression is carried out, wherein an object winding to be diagnosed 2A is connected with the terminals T1, T2, and a voltage across the both ends of the object winding to be diagnosed 2A is measured, and the constants LC, RC of the winding 2A is calculated as state information feature quantities. Then, the nearest diagnostic information feature quantity with respect to the state information feature quantities is searched in the feature quantity space, and a diagnostic result is displayed on a display section 8. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
