发明名称 |
Partial corona discharge detection |
摘要 |
A method of detecting partial corona discharge in a targeted circuit of an electrical apparatus, comprises the steps of: wrapping a Rogowski coil around a leg of the targeted circuit to produce a Rogowski coil signal that represents electrical current rate of change in the leg of the targeted circuit; coupling the Rogowski coil signal to a three-dimensional display device that may represent the dimension of time, the dimension of amplitude as a function of a time, and the dimension of duration of amplitude as a function of time in successive periods of that have a preselected duration; monitoring the display device to detect deviations of the duration of amplitude as a function of time from a normal waveform in the leg of the targeted circuit; and correlating ones of the detected deviations of the duration of amplitude as a function of time from a normal waveform that exceed a preselected deviation level as indicative of partial corona discharge within the targeted circuit. |
申请公布号 |
US8193818(B2) |
申请公布日期 |
2012.06.05 |
申请号 |
US20090354151 |
申请日期 |
2009.01.15 |
申请人 |
HOROWY JOHN;CLEMENTS NEAL D.;HAMILTON SUNDSTRAND CORPORATION |
发明人 |
HOROWY JOHN;CLEMENTS NEAL D. |
分类号 |
G01R31/08;G01R31/12;H01H9/50 |
主分类号 |
G01R31/08 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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