Re-locatable partial discharge transducer head
First Claim
1. An apparatus for detecting partial discharge in on-line electrical equipment, the apparatus comprising:
- (a) a partial discharge detector that, while in use, continuously monitors the electrical equipment and comprises;
(i) an electrically insulating elongate member that is adjustably extendible into the electrical equipment;
(ii) an ultrasonic transducer means mounted at or adjacent a first end of the elongate member for detecting an ultrasonic pulse or wave generated by the occurrence of a partial discharge in the equipment and outputting a signal corresponding to this detection; and
(iii) a RF transducer means for detecting at least the radio frequency (RF) pulses or waves generated by the occurrence of a partial discharge in the equipment and outputting a signal corresponding to this detection,said RF transducer means being adapted in operation to detect said radio frequency (RF) pulses or waves concurrently with the operation of the ultrasonic transducer means;
(b) a support means for the partial discharge detector that is in turn removably mountable to the electrical equipment such that both the ultrasonic transducer means and the RF transducer means are positioned within the equipment and the elongate member extends through the support means to a second end positioned external the equipment; and
(c) a signal processing and analyzing means that receives the signals output by both the ultrasonic transducer and the RF transducer means for detecting at least the radio frequency (RF) pulses or waves and provides an output indicative of detection of partial discharge on occurrence of such a discharge.
4 Assignments
0 Petitions
Accused Products
Abstract
An apparatus (10) for detecting the occurrence of partial discharge in electrical equipment, such as high voltage transformers. The apparatus comprises a detecting means including an ultrasonic transducer (11) mounted at one end of an electrically insulating elongate rod (13). The ultrasonic transducer (11) is adapted to detect ultrasonic pulses or waves generated by the occurrence of a partial discharge in the electrical equipment. A radio frequency (RF) transducer (17) is also utilized to detect radio frequency (RF) pulses or waves also generated by the partial discharge. The rod (13) can be mounted in the wall of the electrical equipment and so provide a mechanism for adjusting the position of the detecting means within the electrical equipment. The apparatus is also removable from the electrical equipment and re-locatable to other equipment.
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Citations
17 Claims
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1. An apparatus for detecting partial discharge in on-line electrical equipment, the apparatus comprising:
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(a) a partial discharge detector that, while in use, continuously monitors the electrical equipment and comprises; (i) an electrically insulating elongate member that is adjustably extendible into the electrical equipment; (ii) an ultrasonic transducer means mounted at or adjacent a first end of the elongate member for detecting an ultrasonic pulse or wave generated by the occurrence of a partial discharge in the equipment and outputting a signal corresponding to this detection; and (iii) a RF transducer means for detecting at least the radio frequency (RF) pulses or waves generated by the occurrence of a partial discharge in the equipment and outputting a signal corresponding to this detection, said RF transducer means being adapted in operation to detect said radio frequency (RF) pulses or waves concurrently with the operation of the ultrasonic transducer means; (b) a support means for the partial discharge detector that is in turn removably mountable to the electrical equipment such that both the ultrasonic transducer means and the RF transducer means are positioned within the equipment and the elongate member extends through the support means to a second end positioned external the equipment; and (c) a signal processing and analyzing means that receives the signals output by both the ultrasonic transducer and the RF transducer means for detecting at least the radio frequency (RF) pulses or waves and provides an output indicative of detection of partial discharge on occurrence of such a discharge. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification