PHASOR ESTIMATION DURING CURRENT TRANSFORMER SATURATION
摘要
<p>The present invention relates to a method, device and computer program product for determining at least one property of a current (Ip) running through the primary winding of a transformer operating in saturation using an unreliable detected current (Is) running through the secondary winding of the transformer. According to the invention a first reliable extreme point (EP1) of a cycle of the current in the secondary winding is detected and compared with an absolute time reference. Based on the comparison a first property of the current running through the primary winding in the form of the phase angle is then determined.</p>
申请公布号
WO2009118048(A1)
申请公布日期
2009.10.01
申请号
WO2008EP53749
申请日期
2008.03.28
申请人
ABB TECHNOLOGY AG;AKKE, MAGNUS;WESTMAN, BJOERN;AASHUVUD, HENRIK