On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing
This paper presents experimental results of high-current impulse tests on six ground electrode configurations. A high impulse current generator is employed to inject different magnitudes of current into these rod electrodes, under both positive and negative impulse polarities. The effect of increasi...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2021-04-01
|
| Series: | Energies |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1996-1073/14/9/2401 |
| _version_ | 1797536609108754432 |
|---|---|
| author | Abdul Wali Abdul Ali Normiza Mohamad Nor |
| author_facet | Abdul Wali Abdul Ali Normiza Mohamad Nor |
| author_sort | Abdul Wali Abdul Ali |
| collection | DOAJ |
| description | This paper presents experimental results of high-current impulse tests on six ground electrode configurations. A high impulse current generator is employed to inject different magnitudes of current into these rod electrodes, under both positive and negative impulse polarities. The effect of increasing the number of rod electrodes, hence the resistance at DC or steady-state (RDC), on the impulse response of ground electrodes is analysed. From the analysis of the results, it was found that the larger the size of rod electrodes, the less current-dependent Z<sub>impulse</sub> becomes. The percentage of reduction of impulse impedance, Z<sub>impulse</sub> from its steady state, and R<sub>DC</sub> values are found to be independent of impulse polarity. However, as the voltage magnitudes were increased, an occurrence of breakdown was seen, with higher breakdown voltage seen in negative impulse polarity in comparison to positive impulse polarity. Relatively, the higher the breakdown voltage is, seen in the ground electrodes subjected to negative polarity, the faster the time to breakdown is. |
| first_indexed | 2024-03-10T12:03:10Z |
| format | Article |
| id | doaj.art-c6a86be637da4c5ca65ac84dc1800bf6 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T12:03:10Z |
| publishDate | 2021-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-c6a86be637da4c5ca65ac84dc1800bf62023-11-21T16:50:08ZengMDPI AGEnergies1996-10732021-04-01149240110.3390/en14092401On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field TestingAbdul Wali Abdul Ali0Normiza Mohamad Nor1Faculty of Engineering, Multimedia University, Cyberjaya 63100, Selangor, MalaysiaFaculty of Engineering, Multimedia University, Cyberjaya 63100, Selangor, MalaysiaThis paper presents experimental results of high-current impulse tests on six ground electrode configurations. A high impulse current generator is employed to inject different magnitudes of current into these rod electrodes, under both positive and negative impulse polarities. The effect of increasing the number of rod electrodes, hence the resistance at DC or steady-state (RDC), on the impulse response of ground electrodes is analysed. From the analysis of the results, it was found that the larger the size of rod electrodes, the less current-dependent Z<sub>impulse</sub> becomes. The percentage of reduction of impulse impedance, Z<sub>impulse</sub> from its steady state, and R<sub>DC</sub> values are found to be independent of impulse polarity. However, as the voltage magnitudes were increased, an occurrence of breakdown was seen, with higher breakdown voltage seen in negative impulse polarity in comparison to positive impulse polarity. Relatively, the higher the breakdown voltage is, seen in the ground electrodes subjected to negative polarity, the faster the time to breakdown is.https://www.mdpi.com/1996-1073/14/9/2401ground electrodesimpulse impedancebreakdown in soil |
| spellingShingle | Abdul Wali Abdul Ali Normiza Mohamad Nor On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing Energies ground electrodes impulse impedance breakdown in soil |
| title | On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing |
| title_full | On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing |
| title_fullStr | On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing |
| title_full_unstemmed | On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing |
| title_short | On the Characterisations of the Impulse Breakdown in High Resistivity Soils by Field Testing |
| title_sort | on the characterisations of the impulse breakdown in high resistivity soils by field testing |
| topic | ground electrodes impulse impedance breakdown in soil |
| url | https://www.mdpi.com/1996-1073/14/9/2401 |
| work_keys_str_mv | AT abdulwaliabdulali onthecharacterisationsoftheimpulsebreakdowninhighresistivitysoilsbyfieldtesting AT normizamohamadnor onthecharacterisationsoftheimpulsebreakdowninhighresistivitysoilsbyfieldtesting |