Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO<sub>2</sub>
This paper uses practical experimentation to analyse the effect of replacing SF<sub>6</sub> with pure CO<sub>2</sub> in conventional gas insulated transmission line sections by studying partial discharge measurements taken with applied voltages up to 242 kV (rms). The results...
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| Format: | Article |
| Language: | English |
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MDPI AG
2020-06-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/13/11/2891 |
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| author | Phillip Widger Daniel Carr Alistair Reid Meirion Hills Chris Stone A. (Manu) Haddad |
| author_facet | Phillip Widger Daniel Carr Alistair Reid Meirion Hills Chris Stone A. (Manu) Haddad |
| author_sort | Phillip Widger |
| collection | DOAJ |
| description | This paper uses practical experimentation to analyse the effect of replacing SF<sub>6</sub> with pure CO<sub>2</sub> in conventional gas insulated transmission line sections by studying partial discharge measurements taken with applied voltages up to 242 kV (rms). The results can also help in understanding the properties of new alternative gas mixtures which can be utilised with a ratio of up to and over 95% CO<sub>2</sub>. The experiments undertaken involved filling a gas insulated line demonstrator with 3 bars of CO<sub>2</sub> and applying voltages up to 242 kV in both clean conditions and particle-contaminated enclosure conditions. The results demonstrate that CO<sub>2</sub> can be used to insulate gas equipment without breakdown at high voltage, however, a higher gas-filling pressure may be needed to reduce the partial discharge found in the tests presented in this paper. Another aspect of the work showed that partial discharge (PD) measurements from internal ultra-high frequency (UHF) sensors compared with a direct measurement from a capacitive divider both clearly showed the effect of contaminating particles in CO<sub>2</sub>. However, the PD divider measurements also showed considerable external PD on the outside of the gas compartment, leading to the conclusion that UHF sensors are still regarded as having the highest sensitivity and noise immunity for gas insulated switchgear (GIS) or gas insulated transmission line (GIL) systems including when the equipment is insulated with CO<sub>2</sub>. |
| first_indexed | 2024-03-10T19:21:11Z |
| format | Article |
| id | doaj.art-b6e0dfa36ee54d2cbb4faed7c6674e51 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-03-10T19:21:11Z |
| publishDate | 2020-06-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-b6e0dfa36ee54d2cbb4faed7c6674e512023-11-20T03:00:01ZengMDPI AGEnergies1996-10732020-06-011311289110.3390/en13112891Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO<sub>2</sub>Phillip Widger0Daniel Carr1Alistair Reid2Meirion Hills3Chris Stone4A. (Manu) Haddad5School of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKSchool of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKSchool of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKSchool of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKSchool of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKSchool of Engineering, Cardiff University, The Parade, Cardiff CF24 3AA, UKThis paper uses practical experimentation to analyse the effect of replacing SF<sub>6</sub> with pure CO<sub>2</sub> in conventional gas insulated transmission line sections by studying partial discharge measurements taken with applied voltages up to 242 kV (rms). The results can also help in understanding the properties of new alternative gas mixtures which can be utilised with a ratio of up to and over 95% CO<sub>2</sub>. The experiments undertaken involved filling a gas insulated line demonstrator with 3 bars of CO<sub>2</sub> and applying voltages up to 242 kV in both clean conditions and particle-contaminated enclosure conditions. The results demonstrate that CO<sub>2</sub> can be used to insulate gas equipment without breakdown at high voltage, however, a higher gas-filling pressure may be needed to reduce the partial discharge found in the tests presented in this paper. Another aspect of the work showed that partial discharge (PD) measurements from internal ultra-high frequency (UHF) sensors compared with a direct measurement from a capacitive divider both clearly showed the effect of contaminating particles in CO<sub>2</sub>. However, the PD divider measurements also showed considerable external PD on the outside of the gas compartment, leading to the conclusion that UHF sensors are still regarded as having the highest sensitivity and noise immunity for gas insulated switchgear (GIS) or gas insulated transmission line (GIL) systems including when the equipment is insulated with CO<sub>2</sub>.https://www.mdpi.com/1996-1073/13/11/2891gas insulated transmission lines (GILs)partial discharge (PD)sulphur hexafluoride (SF<sub>6</sub>), carbon dioxide (CO<sub>2</sub>)ultra high frequency (UHF) sensors |
| spellingShingle | Phillip Widger Daniel Carr Alistair Reid Meirion Hills Chris Stone A. (Manu) Haddad Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO<sub>2</sub> Energies gas insulated transmission lines (GILs) partial discharge (PD) sulphur hexafluoride (SF<sub>6</sub>), carbon dioxide (CO<sub>2</sub>) ultra high frequency (UHF) sensors |
| title | Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO<sub>2</sub> |
| title_full | Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO<sub>2</sub> |
| title_fullStr | Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO<sub>2</sub> |
| title_full_unstemmed | Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO<sub>2</sub> |
| title_short | Partial Discharge Measurements in a High Voltage Gas Insulated Transmission Line Insulated with CO<sub>2</sub> |
| title_sort | partial discharge measurements in a high voltage gas insulated transmission line insulated with co sub 2 sub |
| topic | gas insulated transmission lines (GILs) partial discharge (PD) sulphur hexafluoride (SF<sub>6</sub>), carbon dioxide (CO<sub>2</sub>) ultra high frequency (UHF) sensors |
| url | https://www.mdpi.com/1996-1073/13/11/2891 |
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