Temperature and Humidity Control Strategy of Certain Subway Power Distribution Cabinet Based on COMSOL Multiphysics Software
［Objective］ PDC (power distribution cabinet) operating in the high temperature and high humidity environment of the Yangtze River Basin are prone to internal condensation under the influence of the natural environment, resulting in equipment moisture and failure. To avoid PDC failure caused by conde...
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Urban Mass Transit Magazine Press
2025-04-01
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| Series: | Chengshi guidao jiaotong yanjiu |
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| Online Access: | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.04.014.html |
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| author | DENG Lei CUI Guanglei |
| author_facet | DENG Lei CUI Guanglei |
| author_sort | DENG Lei |
| collection | DOAJ |
| description | ［Objective］ PDC (power distribution cabinet) operating in the high temperature and high humidity environment of the Yangtze River Basin are prone to internal condensation under the influence of the natural environment, resulting in equipment moisture and failure. To avoid PDC failure caused by condensation, it is necessary to analyze the formation mechanism of condensation and study the temperature and humidity control strategy of PDC. ［Method］ Based on the distribution cabinet failure caused by condensation, the mechanism and main influencing factors of condensation phenomenon are analyzed. Taking PDC in the subway power distribution room of a city in Central China as an example, COMSOL Multiphysics simulation software is used to build a full-scale multi-physics field coupling simulation model of PDC. Based on the historical data of environmental measurement and control, a simulation is carried out to analyze the impact of PDC internal temperature and humidity changes on the condensation phenomenon inside. Based on the data from 2022, the condensation probability of each month under natural conditions is statistically analyzed, and the temperature and humidity control strategy for PDC is proposed in combination with the simulation calculation results, and the control effect is analyzed through simulation calculation. ［Result & Conclusion］ Condensation is closely related to relative humidity and dew point temperature. The probability of condensation is highest in June and July, and it is most likely to occur from midnight to early morning after nightfall. Increasing the air conditioning setting temperature in the power distribution room and lowering the relative humidity of the environment can significantly reduce the probability of condensation in PDC. The specific control strategy is: when the air conditioning is cooling in summer, the air conditioning temperature in the power distribution room should not be set lower than 26 ℃: adding a dehumidifier in the power distribution room could reduce the relative humidity of the environment to 75% or below. The simulation results verify that the temperature and humidity control strategy has a good anti-condensation effect. |
| format | Article |
| id | doaj-art-e191e6b7d4ef459fb87ca14d2d99831e |
| institution | OA Journals |
| issn | 1007-869X |
| language | zho |
| publishDate | 2025-04-01 |
| publisher | Urban Mass Transit Magazine Press |
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| series | Chengshi guidao jiaotong yanjiu |
| spelling | doaj-art-e191e6b7d4ef459fb87ca14d2d99831e2025-08-20T02:16:10ZzhoUrban Mass Transit Magazine PressChengshi guidao jiaotong yanjiu1007-869X2025-04-01284717710.16037/j.1007-869x.2025.04.014Temperature and Humidity Control Strategy of Certain Subway Power Distribution Cabinet Based on COMSOL Multiphysics SoftwareDENG Lei0CUI Guanglei1Wuhan Metro Operation Co., Ltd., 430030, Wuhan, ChinaKey Laboratory of Liaoning Province on Deep Engineering and Intelligent Technology, Northeastern University, 110819, Shenyang, China［Objective］ PDC (power distribution cabinet) operating in the high temperature and high humidity environment of the Yangtze River Basin are prone to internal condensation under the influence of the natural environment, resulting in equipment moisture and failure. To avoid PDC failure caused by condensation, it is necessary to analyze the formation mechanism of condensation and study the temperature and humidity control strategy of PDC. ［Method］ Based on the distribution cabinet failure caused by condensation, the mechanism and main influencing factors of condensation phenomenon are analyzed. Taking PDC in the subway power distribution room of a city in Central China as an example, COMSOL Multiphysics simulation software is used to build a full-scale multi-physics field coupling simulation model of PDC. Based on the historical data of environmental measurement and control, a simulation is carried out to analyze the impact of PDC internal temperature and humidity changes on the condensation phenomenon inside. Based on the data from 2022, the condensation probability of each month under natural conditions is statistically analyzed, and the temperature and humidity control strategy for PDC is proposed in combination with the simulation calculation results, and the control effect is analyzed through simulation calculation. ［Result & Conclusion］ Condensation is closely related to relative humidity and dew point temperature. The probability of condensation is highest in June and July, and it is most likely to occur from midnight to early morning after nightfall. Increasing the air conditioning setting temperature in the power distribution room and lowering the relative humidity of the environment can significantly reduce the probability of condensation in PDC. The specific control strategy is: when the air conditioning is cooling in summer, the air conditioning temperature in the power distribution room should not be set lower than 26 ℃: adding a dehumidifier in the power distribution room could reduce the relative humidity of the environment to 75% or below. The simulation results verify that the temperature and humidity control strategy has a good anti-condensation effect.https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.04.014.htmlsubwaypower distribution cabinetmulti-physics fieldtemperature and humiditycondensation |
| spellingShingle | DENG Lei CUI Guanglei Temperature and Humidity Control Strategy of Certain Subway Power Distribution Cabinet Based on COMSOL Multiphysics Software Chengshi guidao jiaotong yanjiu subway power distribution cabinet multi-physics field temperature and humidity condensation |
| title | Temperature and Humidity Control Strategy of Certain Subway Power Distribution Cabinet Based on COMSOL Multiphysics Software |
| title_full | Temperature and Humidity Control Strategy of Certain Subway Power Distribution Cabinet Based on COMSOL Multiphysics Software |
| title_fullStr | Temperature and Humidity Control Strategy of Certain Subway Power Distribution Cabinet Based on COMSOL Multiphysics Software |
| title_full_unstemmed | Temperature and Humidity Control Strategy of Certain Subway Power Distribution Cabinet Based on COMSOL Multiphysics Software |
| title_short | Temperature and Humidity Control Strategy of Certain Subway Power Distribution Cabinet Based on COMSOL Multiphysics Software |
| title_sort | temperature and humidity control strategy of certain subway power distribution cabinet based on comsol multiphysics software |
| topic | subway power distribution cabinet multi-physics field temperature and humidity condensation |
| url | https://umt1998.tongji.edu.cn/journal/paper/doi/10.16037/j.1007-869x.2025.04.014.html |
| work_keys_str_mv | AT denglei temperatureandhumiditycontrolstrategyofcertainsubwaypowerdistributioncabinetbasedoncomsolmultiphysicssoftware AT cuiguanglei temperatureandhumiditycontrolstrategyofcertainsubwaypowerdistributioncabinetbasedoncomsolmultiphysicssoftware |