Simple Partial Discharge Detector Rear Amplifier and Counter Circuit Design and Application
碩士 === 國立成功大學 === 電機工程學系碩博士班 === 97 === Partial discharge (PD) detection involves detecting the interior isolation status of power equipment to prevent breakdown. The main object of this thesis is to develop the rear circuit for a simple PD detector, which is based on the 8052 microcontroller and co...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2009
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| Online Access: | http://ndltd.ncl.edu.tw/handle/32051494582146367167 |
| Summary: | 碩士 === 國立成功大學 === 電機工程學系碩博士班 === 97 === Partial discharge (PD) detection involves detecting the interior isolation status of power equipment to prevent breakdown. The main object of this thesis is to develop the rear circuit for a simple PD detector, which is based on the 8052 microcontroller and combined with a filter-amplifier circuit that was designed in our laboratory. The simple detection system not only can be used to count the number of PD events from acoustic emission (AE) waveforms using an oscilloscope, but also works without an oscilloscope for the long-term monitoring. We applied the developed simple PD detector to sense the discharge signals in gas isolation switchgear (GIS). The counting numbers of PD signals show that the system can determine the gravity of PD in the power equipment. The system is associated with a lower cost as compared with the commercial PD apparatus, and is used with various filter-amplifier circuits to detect internal isolation status in various pieces of power equipment.
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