A study on the effect of continuous impact load on thermal life of main transformer in urban rail transit
The main transformer is key power equipment connecting the main network with the urban rail transit grid, and therefore, its safe and stable operation has great significance. However, the impact characteristics of the metro load is different from the general power load of the grid, resulting in a mo...
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| Format: | Article |
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Editorial Department of Electric Drive for Locomotives
2023-01-01
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| Series: | 机车电传动 |
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| Online Access: | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2023.01.104 |
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| author | YE Qing ZHAO Wenbin ZHENG Xin XU Bin |
| author_facet | YE Qing ZHAO Wenbin ZHENG Xin XU Bin |
| author_sort | YE Qing |
| collection | DOAJ |
| description | The main transformer is key power equipment connecting the main network with the urban rail transit grid, and therefore, its safe and stable operation has great significance. However, the impact characteristics of the metro load is different from the general power load of the grid, resulting in a more complex effect on the thermal life loss of the main transformer. In order to analyze the change of thermal life loss of the main transformer due to the impact load of the metro, in this paper, the waveform of the measured impact load of the metro was decomposed and its characteristics were extracted according to the time-varying characteristics of the impact load of the metro. Multiple simulation scenarios were set up to verify the applicability of the heat transfer differential equation method in the metro impact scenario, and the effect of the metro load on the transformer in multiple scenarios was summarized to determine the life loss of the main transformer of the metro. The analysis results show that the heat transfer differential equation method can be used as a calculation method for impact load scenarios of the metro. The life loss of the main transformer under the action of the impact load of the metro is more serious than that of the conventional electric load. The life prediction and equipment management shall be performed in advance for the main transformer in metro scenarios. |
| format | Article |
| id | doaj-art-e6bede1e5c844b429913cf3b209bad7f |
| institution | Kabale University |
| issn | 1000-128X |
| language | zho |
| publishDate | 2023-01-01 |
| publisher | Editorial Department of Electric Drive for Locomotives |
| record_format | Article |
| series | 机车电传动 |
| spelling | doaj-art-e6bede1e5c844b429913cf3b209bad7f2025-08-20T03:48:58ZzhoEditorial Department of Electric Drive for Locomotives机车电传动1000-128X2023-01-0112213035729294A study on the effect of continuous impact load on thermal life of main transformer in urban rail transitYE QingZHAO WenbinZHENG XinXU BinThe main transformer is key power equipment connecting the main network with the urban rail transit grid, and therefore, its safe and stable operation has great significance. However, the impact characteristics of the metro load is different from the general power load of the grid, resulting in a more complex effect on the thermal life loss of the main transformer. In order to analyze the change of thermal life loss of the main transformer due to the impact load of the metro, in this paper, the waveform of the measured impact load of the metro was decomposed and its characteristics were extracted according to the time-varying characteristics of the impact load of the metro. Multiple simulation scenarios were set up to verify the applicability of the heat transfer differential equation method in the metro impact scenario, and the effect of the metro load on the transformer in multiple scenarios was summarized to determine the life loss of the main transformer of the metro. The analysis results show that the heat transfer differential equation method can be used as a calculation method for impact load scenarios of the metro. The life loss of the main transformer under the action of the impact load of the metro is more serious than that of the conventional electric load. The life prediction and equipment management shall be performed in advance for the main transformer in metro scenarios.http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2023.01.104impact loadmain transformerurban rail transitgridheat transfer differential equation methodthermal aging assessment |
| spellingShingle | YE Qing ZHAO Wenbin ZHENG Xin XU Bin A study on the effect of continuous impact load on thermal life of main transformer in urban rail transit 机车电传动 impact load main transformer urban rail transit grid heat transfer differential equation method thermal aging assessment |
| title | A study on the effect of continuous impact load on thermal life of main transformer in urban rail transit |
| title_full | A study on the effect of continuous impact load on thermal life of main transformer in urban rail transit |
| title_fullStr | A study on the effect of continuous impact load on thermal life of main transformer in urban rail transit |
| title_full_unstemmed | A study on the effect of continuous impact load on thermal life of main transformer in urban rail transit |
| title_short | A study on the effect of continuous impact load on thermal life of main transformer in urban rail transit |
| title_sort | study on the effect of continuous impact load on thermal life of main transformer in urban rail transit |
| topic | impact load main transformer urban rail transit grid heat transfer differential equation method thermal aging assessment |
| url | http://edl.csrzic.com/thesisDetails#10.13890/j.issn.1000-128X.2023.01.104 |
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