Analysis of the Processes of Short-Currents Limiting by Transformer with High-Temperature Superconducting Windings
An important advantage of transformers with high-temperature superconducting winding is their ability to limit the short-circuit currents. The article discusses a physico-mathematical model that analyses transient processes at short-circuit currents in electrical networks containing transformers wit...
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| Format: | Article |
| Language: | English |
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Academy of Sciences of Moldova
2017-04-01
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| Series: | Problems of the Regional Energetics |
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| Online Access: | http://journal.ie.asm.md/assets/files/01_01_33_2017.pdf |
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| author | Manusov V.Z. Pavlyuchenko D.A. Ahyoev J.S. |
| author_facet | Manusov V.Z. Pavlyuchenko D.A. Ahyoev J.S. |
| author_sort | Manusov V.Z. |
| collection | DOAJ |
| description | An important advantage of transformers with high-temperature superconducting winding is their ability to limit the short-circuit currents. The article discusses a physico-mathematical model that analyses transient processes at short-circuit currents in electrical networks containing transformers with a high-temperature superconducting winding. One of the main ideas and objectives of this work is to investigate the process of short-circuit currents limiting by means of a transformer with a high-temperature superconductor winding, which makes it possible to combine two series-connected elements in one device: transformer and a reactor. The effectiveness of this method is due to the fact that when the short-circuit currents exceed the critical value of the temperature of the superconductor winding, it goes to the normal state with high winding resistance for short-circuit currents. It is important to know when a superconductor should go over to a normal state with the loss of superconductivity. For this purpose, a program was developed to determine the amount of heat generated by a short-circuit current flowing before it is disconnected. For a transformer with high-temperature superconducting winding with a capacity of 40 MVA, a short circuit must be eliminated after 0.1 seconds, without switching off the transformer. To limit the short-circuit current; it is intended to use a hybrid winding. The performed assessment showed that the return of the winding to the superconducting state, first, depends on the ratio of the short-circuit currents to the operating current. This is the criterion for the return/non-return to the superconducting state. |
| format | Article |
| id | doaj-art-633efe36690940a6a14c6d8b5fb01e06 |
| institution | Matheson Library |
| issn | 1857-0070 |
| language | English |
| publishDate | 2017-04-01 |
| publisher | Academy of Sciences of Moldova |
| record_format | Article |
| series | Problems of the Regional Energetics |
| spelling | doaj-art-633efe36690940a6a14c6d8b5fb01e062025-08-02T09:31:49ZengAcademy of Sciences of MoldovaProblems of the Regional Energetics1857-00702017-04-0133117Analysis of the Processes of Short-Currents Limiting by Transformer with High-Temperature Superconducting WindingsManusov V.Z.0Pavlyuchenko D.A.1Ahyoev J.S.2Novosibirsk State Technical University Novosibirsk, Russian FederationNovosibirsk State Technical University Novosibirsk, Russian FederationNovosibirsk State Technical University Novosibirsk, Russian FederationAn important advantage of transformers with high-temperature superconducting winding is their ability to limit the short-circuit currents. The article discusses a physico-mathematical model that analyses transient processes at short-circuit currents in electrical networks containing transformers with a high-temperature superconducting winding. One of the main ideas and objectives of this work is to investigate the process of short-circuit currents limiting by means of a transformer with a high-temperature superconductor winding, which makes it possible to combine two series-connected elements in one device: transformer and a reactor. The effectiveness of this method is due to the fact that when the short-circuit currents exceed the critical value of the temperature of the superconductor winding, it goes to the normal state with high winding resistance for short-circuit currents. It is important to know when a superconductor should go over to a normal state with the loss of superconductivity. For this purpose, a program was developed to determine the amount of heat generated by a short-circuit current flowing before it is disconnected. For a transformer with high-temperature superconducting winding with a capacity of 40 MVA, a short circuit must be eliminated after 0.1 seconds, without switching off the transformer. To limit the short-circuit current; it is intended to use a hybrid winding. The performed assessment showed that the return of the winding to the superconducting state, first, depends on the ratio of the short-circuit currents to the operating current. This is the criterion for the return/non-return to the superconducting state.http://journal.ie.asm.md/assets/files/01_01_33_2017.pdftransformersuperconductor windingenergy efficiencya |
| spellingShingle | Manusov V.Z. Pavlyuchenko D.A. Ahyoev J.S. Analysis of the Processes of Short-Currents Limiting by Transformer with High-Temperature Superconducting Windings Problems of the Regional Energetics transformer superconductor winding energy efficiency a |
| title | Analysis of the Processes of Short-Currents Limiting by Transformer with High-Temperature Superconducting Windings |
| title_full | Analysis of the Processes of Short-Currents Limiting by Transformer with High-Temperature Superconducting Windings |
| title_fullStr | Analysis of the Processes of Short-Currents Limiting by Transformer with High-Temperature Superconducting Windings |
| title_full_unstemmed | Analysis of the Processes of Short-Currents Limiting by Transformer with High-Temperature Superconducting Windings |
| title_short | Analysis of the Processes of Short-Currents Limiting by Transformer with High-Temperature Superconducting Windings |
| title_sort | analysis of the processes of short currents limiting by transformer with high temperature superconducting windings |
| topic | transformer superconductor winding energy efficiency a |
| url | http://journal.ie.asm.md/assets/files/01_01_33_2017.pdf |
| work_keys_str_mv | AT manusovvz analysisoftheprocessesofshortcurrentslimitingbytransformerwithhightemperaturesuperconductingwindings AT pavlyuchenkoda analysisoftheprocessesofshortcurrentslimitingbytransformerwithhightemperaturesuperconductingwindings AT ahyoevjs analysisoftheprocessesofshortcurrentslimitingbytransformerwithhightemperaturesuperconductingwindings |