| Title: |
The Influence of the Effect of Grounding and Corona Current to the Field Strength the Corona Onset and the Breakdown Voltage of Small Air Gaps |
| Authors: |
Leandros A. Maglaras; Athanasios L. Maglaras; Frangiskos V. Topalis |
| Contributors: |
The Pennsylvania State University CiteSeerX Archives |
| Source: |
http://www.wseas.us/e-library/transactions/power/2008/25-485.pdf. |
| Publication Year: |
2008 |
| Collection: |
CiteSeerX |
| Subject Terms: |
Method; Grounding Effect |
| Description: |
In the present paper the values of the field strength at Corona onset and Breakdown in small air gaps in connection to the effect of grounding is investigated. The effect of grounding is occurred due to the fact that in air gap arrangements one electrode is usually grounded. The field distribution is analyzed with the Finite Element Method. The corona onset and the breakdown voltage are experimentally measured. The maximum value of the field strength at corona onset and breakdown are calculated for the different arrangements with one electrode grounded and with the electrodes symmetrically charged, and are compared. It is resulted that the effect of grounding influences the field distribution, the corona onset, and the breakdown voltage of small air gaps greatly. The effect is intense in the non-symmetrical rod-plate air gaps and less significant in the symmetrical ones, rod-rod and sphere-sphere. The values of the corona onset and the breakdown voltages are much higher in the arrangement with one electrode grounded, and in the rod-plate air gaps with the rod grounded. The correspondent values of the field strength are almost equal for the two different cases. In longer air gaps the corona current suspends the breakdown, the effect of grounding is vanished, and the field strength at breakdown is higher in the arrangement with the plate grounded. Relations between the field strength, the gap length and the rod’s diameter, as well as between the corona current and the breakdown voltage and field strength arise. The principle of action-reaction is valid. |
| Document Type: |
text |
| File Description: |
application/pdf |
| Language: |
English |
| Relation: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.590.6930 |
| Availability: |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.590.6930; http://www.wseas.us/e-library/transactions/power/2008/25-485.pdf |
| Rights: |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
| Accession Number: |
edsbas.73AB94C1 |
| Database: |
BASE |