التفاصيل البيبلوغرافية
| العنوان: |
Corona processing of insulating oil |
| المؤلفون: |
Rohwein, G. J. |
| المساهمون: |
United States. Department of Energy. |
| المصدر: |
22. International power modulator symposium, Boca Raton, FL (United States), 24-27 Jun 1996 |
| بيانات النشر: |
Sandia National Laboratories |
| سنة النشر: |
1996 |
| المجموعة: |
University of North Texas: UNT Digital Library |
| مصطلحات موضوعية: |
42 Engineering Not Included In Other Categories, Breakdown, Transformers, Corona Discharges, 24 Power Transmission And Distribution, Insulating Oils, Electrical Testing, Dielectric Properties |
| الوصف: |
It is well known that sustained corona discharge in insulating oil lowers its dielectric strength and simultaneously reduces its corona resistance. Therefore, for operating stresses in the corona regime, activity typically increases with time and, if allowed to continue, eventually leads to breakdown of the oil and failure of the component or system. It is, therefore, common practice to periodically replace oil in devices such as large power transformers and switch gear before breakdown occurs. Sealed components such as capacitors are typically replaced. Recent experiments have demonstrated that the dielectric properties of corona weakened oil can not only be restored, but actually improved by a simple regeneration process. These experiments were carried out on high voltage pulse transformer windings which were operated at high rep rates until partial discharges formed. Reprocessing the oil after each operating cycle resulted in successively longer operational periods before partial discharges appeared. In a separate experiment, a process was developed to precondition transformer oil to raise its corona inception voltage before using it to insulate a high voltage component, thus giving it a longer initial service life for a given operating stress or permitting higher stress operation for limited operating times. |
| نوع الوثيقة: |
article in journal/newspaper |
| وصف الملف: |
4 p.; Text |
| اللغة: |
English |
| Relation: |
other: DE96012944; rep-no: SAND--96-0498C; rep-no: CONF-960685--5; grantno: AC04-94AL85000; osti: 266834; https://digital.library.unt.edu/ark:/67531/metadc670589/; ark: ark:/67531/metadc670589 |
| الاتاحة: |
https://digital.library.unt.edu/ark:/67531/metadc670589/ |
| رقم الانضمام: |
edsbas.3F77131A |
| قاعدة البيانات: |
BASE |