| 摘要 |
<p>The winding testing unit (100) provides systems and methods for determining normal and/or abnormal characteristic signatures of same-voltage windings residing in a device, such as transformer (102), without the need for a comparison to past historical data. A plurality of characteristic signatures [H(f)'s] (134) are determined for each of a plurality of windings. A plurality of differential characteristic signatures [H(f)'s] are then determined from a plurality of H(f) pairs selected from the plurality of H(f)'s (134). The differential H(f)'s are compared and at least one significant asymmetry is identified between the differential H(f)'s.</p> |
