Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System
Grounding systems are essential parts of substations and power generation stations. The evaluation of transferred potentials from an active grounding system to other passive ones or to any near conductors is an important aspect to be considered, because transferred potentials may cause serious and f...
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| Format: | Article |
| Language: | English |
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MDPI AG
2019-03-01
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| Series: | Energies |
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| Online Access: | https://www.mdpi.com/1996-1073/12/7/1210 |
| _version_ | 1811263949141704704 |
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| author | Giovanni Aiello Salvatore Alfonzetti Santi Agatino Rizzo Nunzio Salerno |
| author_facet | Giovanni Aiello Salvatore Alfonzetti Santi Agatino Rizzo Nunzio Salerno |
| author_sort | Giovanni Aiello |
| collection | DOAJ |
| description | Grounding systems are essential parts of substations and power generation stations. The evaluation of transferred potentials from an active grounding system to other passive ones or to any near conductors is an important aspect to be considered, because transferred potentials may cause serious and fatal events. Moreover, it is an intrinsic issue of the Smart Grid where the ground systems of the power and ICT systems could be close to each other. Therefore, the estimation of the transferred potential is necessary at grounding system design stage for people safety and electric components safeguard. Numerical methods are the best choice to perform a truthful estimation, especially when large and complex grounding systems have to be designed. However, this task is complicated by the “unbounded„ nature of the electromagnetic field and by the presence of components of extremely different size in the analysis domain. In this paper, an efficient hybrid finite element method is applied for the accurate and fast computation of transferred earth potentials from grounding systems. Moreover, the small dimensions of the components in the analysis domain are taken into account by the use of one-dimensional finite elements inserted in the tetrahedral mesh. It is worth mentioning the additional advantage of obtaining the electric potential on the earth surface without any post-processing operation. |
| first_indexed | 2024-04-12T19:55:39Z |
| format | Article |
| id | doaj.art-66e7c972b7d14039b5c15dbc2050ad57 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-12T19:55:39Z |
| publishDate | 2019-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-66e7c972b7d14039b5c15dbc2050ad572022-12-22T03:18:41ZengMDPI AGEnergies1996-10732019-03-01127121010.3390/en12071210en12071210Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding SystemGiovanni Aiello0Salvatore Alfonzetti1Santi Agatino Rizzo2Nunzio Salerno3Department of Electrical, Electronic and Computer Engineering, 95125 Catania, ItalyDepartment of Electrical, Electronic and Computer Engineering, 95125 Catania, ItalyDepartment of Electrical, Electronic and Computer Engineering, 95125 Catania, ItalyDepartment of Electrical, Electronic and Computer Engineering, 95125 Catania, ItalyGrounding systems are essential parts of substations and power generation stations. The evaluation of transferred potentials from an active grounding system to other passive ones or to any near conductors is an important aspect to be considered, because transferred potentials may cause serious and fatal events. Moreover, it is an intrinsic issue of the Smart Grid where the ground systems of the power and ICT systems could be close to each other. Therefore, the estimation of the transferred potential is necessary at grounding system design stage for people safety and electric components safeguard. Numerical methods are the best choice to perform a truthful estimation, especially when large and complex grounding systems have to be designed. However, this task is complicated by the “unbounded„ nature of the electromagnetic field and by the presence of components of extremely different size in the analysis domain. In this paper, an efficient hybrid finite element method is applied for the accurate and fast computation of transferred earth potentials from grounding systems. Moreover, the small dimensions of the components in the analysis domain are taken into account by the use of one-dimensional finite elements inserted in the tetrahedral mesh. It is worth mentioning the additional advantage of obtaining the electric potential on the earth surface without any post-processing operation.https://www.mdpi.com/1996-1073/12/7/1210boundary element methodearthing systemfinite element analysisgrounding systemnumerical methodtransferred potential |
| spellingShingle | Giovanni Aiello Salvatore Alfonzetti Santi Agatino Rizzo Nunzio Salerno Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System Energies boundary element method earthing system finite element analysis grounding system numerical method transferred potential |
| title | Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System |
| title_full | Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System |
| title_fullStr | Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System |
| title_full_unstemmed | Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System |
| title_short | Thin Conductor Modelling Combined with a Hybrid Numerical Method to Evaluate the Transferred Potential from Isolated Grounding System |
| title_sort | thin conductor modelling combined with a hybrid numerical method to evaluate the transferred potential from isolated grounding system |
| topic | boundary element method earthing system finite element analysis grounding system numerical method transferred potential |
| url | https://www.mdpi.com/1996-1073/12/7/1210 |
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