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Sensitive Online PD-Measurements of Onsite Oil/Paper-Insulated Devices by Means of Optimized Acoustic Emission Techniques (AET)
- Source :
- IEEE Transactions on Power Delivery. 20:158-162
- Publication Year :
- 2005
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2005.
-
Abstract
- Recently developed monitoring-systems show the need as also the possibilities for online- and offline-onsite-diagnostics. The limit in sensitivity for electrical pd-measurements according to IEC 60270 which is reached using filters for sinusoidal disturbances and compensation for corona impulses is still not satisfactory. The acoustic partial discharge measurement (pd-measurement) is also a well known and reliable method often used by transformer manufacturers in testing. In laboratory setups a gain in sensitivity of the acoustic in comparison to the electrical pd measurements could be established. This is reached by adapting the sensors to the propagation path, a modern but moderately priced acquisition hardware and the introduction of new signal processing algorithms. The developed sophisticated measuring systems show remarkable results in online acoustic pd-measurements onsite.
Details
- ISSN :
- 08858977
- Volume :
- 20
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Power Delivery
- Accession number :
- edsair.doi...........03b9c004dbb100a0c1ece63cc555dc92