Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital
Transformers are installed in power distribution systems to perform changes in supply voltage. Large consumers often have several transformers installed in parallel to ensure continuity of supply in the event of failure. These machines can achieve very high efficiency, but their efficiency is not co...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-02-01
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| Series: | Energies |
| Subjects: | |
| Online Access: | http://www.mdpi.com/1996-1073/11/2/419 |
| _version_ | 1798038684947185664 |
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| author | Carlos Javier Renedo Agustín Santisteban Félix Ortiz Cristian Olmo Alfredo Ortiz |
| author_facet | Carlos Javier Renedo Agustín Santisteban Félix Ortiz Cristian Olmo Alfredo Ortiz |
| author_sort | Carlos Javier Renedo |
| collection | DOAJ |
| description | Transformers are installed in power distribution systems to perform changes in supply voltage. Large consumers often have several transformers installed in parallel to ensure continuity of supply in the event of failure. These machines can achieve very high efficiency, but their efficiency is not constant since it depends on the power demanded at each time. Therefore, the level of efficiency that correspond to the operation of a specific transformer depends on two factors: machine technical characteristics and electrical load. In this work, the authors have proposed a methodology which shows the optimal number of transformers to be connected at each period in the substations of a large Spanish hospital, in order to achieve the maximum seasonal efficiency of these machines. The results of the energy saving are determined with respect to the current situation, in which all the transformers are permanently connected. On the other hand, the European Union has established a new regulation that sets the minimum energy efficiency requirements for new power transformers. This efficiency improvement is proposed to be applied gradually in two stages, a first limit came into force in 2015, while a more restrictive approach will appear in the year 2021. This work has also studied the potential energy savings that would occur when the substations of the hospital have more efficient transformers complying with the new European Regulation 548/2014. |
| first_indexed | 2024-04-11T21:44:40Z |
| format | Article |
| id | doaj.art-22675d6f8dfe44b8a27ca66f7bc0f9a2 |
| institution | Directory Open Access Journal |
| issn | 1996-1073 |
| language | English |
| last_indexed | 2024-04-11T21:44:40Z |
| publishDate | 2018-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Energies |
| spelling | doaj.art-22675d6f8dfe44b8a27ca66f7bc0f9a22022-12-22T04:01:28ZengMDPI AGEnergies1996-10732018-02-0111241910.3390/en11020419en11020419Evaluation of the Optimal Connection of Power Transformers in the Substations of a HospitalCarlos Javier Renedo0Agustín Santisteban1Félix Ortiz2Cristian Olmo3Alfredo Ortiz4Electrical and Energy Engineering Department, University of Cantabria, 39005 Santander, SpainElectrical and Energy Engineering Department, University of Cantabria, 39005 Santander, SpainElectrical and Energy Engineering Department, University of Cantabria, 39005 Santander, SpainElectrical and Energy Engineering Department, University of Cantabria, 39005 Santander, SpainElectrical and Energy Engineering Department, University of Cantabria, 39005 Santander, SpainTransformers are installed in power distribution systems to perform changes in supply voltage. Large consumers often have several transformers installed in parallel to ensure continuity of supply in the event of failure. These machines can achieve very high efficiency, but their efficiency is not constant since it depends on the power demanded at each time. Therefore, the level of efficiency that correspond to the operation of a specific transformer depends on two factors: machine technical characteristics and electrical load. In this work, the authors have proposed a methodology which shows the optimal number of transformers to be connected at each period in the substations of a large Spanish hospital, in order to achieve the maximum seasonal efficiency of these machines. The results of the energy saving are determined with respect to the current situation, in which all the transformers are permanently connected. On the other hand, the European Union has established a new regulation that sets the minimum energy efficiency requirements for new power transformers. This efficiency improvement is proposed to be applied gradually in two stages, a first limit came into force in 2015, while a more restrictive approach will appear in the year 2021. This work has also studied the potential energy savings that would occur when the substations of the hospital have more efficient transformers complying with the new European Regulation 548/2014.http://www.mdpi.com/1996-1073/11/2/419power transformerefficiencyseasonal efficiency |
| spellingShingle | Carlos Javier Renedo Agustín Santisteban Félix Ortiz Cristian Olmo Alfredo Ortiz Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital Energies power transformer efficiency seasonal efficiency |
| title | Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital |
| title_full | Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital |
| title_fullStr | Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital |
| title_full_unstemmed | Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital |
| title_short | Evaluation of the Optimal Connection of Power Transformers in the Substations of a Hospital |
| title_sort | evaluation of the optimal connection of power transformers in the substations of a hospital |
| topic | power transformer efficiency seasonal efficiency |
| url | http://www.mdpi.com/1996-1073/11/2/419 |
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