潮热地区变电站10 kV配电装置室凝露机理分析与综合防治

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Abstract In response to the partial discharge and metal component corrosion issues in the busbar bridge of a 10 kV distribution equipment room at a 220 kV substation in Quanzhou, Fujian, this study reveals the fundamental mechanism of condensation formation through field testing and theoretical analysis. Research indicates that inadequate building sealing coupled with deficient ventilation control creates thermal stack effect-driven airflow between vertically adjacent spaces, causing moisture-laden hot air to continuously contact and condense on cooler equipment surfaces. The heat and mass transfer process is analyzed based on humid air thermodynamics, and the inevitability of condensation is quantitatively verified through dew point calculation. An integrated solution is proposed, featuring “airtight sealing as the foundation, coordinated temperature-humidity control as the core, and intelligent monitoring as the safeguard”. Precise management of the environmental dew point is achieved through building airtightness improvements and coordinated operation of air conditioning and dehumidifiers. Engineering applications demonstrate that this approach effectively eliminates condensation and discharge risks, maintaining post-treatment room relative humidity stably within (50±5)%, providing a reliable solution for moisture prevention in substation design and operation within hot-humid regions.

Key words： substation condensation thermal stack effect heat and mass transfer dew point temperature integrated prevention and control

Received: 22 December 2025

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	Articles by authors
	ZHANG Junkang
	SHEN Xielin
	YANG Dongming
	ZHANG Shaoying
	ZHENG Xinze

Cite this article:

ZHANG Junkang,SHEN Xielin,YANG Dongming等. Mechanism analysis and integrated prevention of condensation in 10 kV distribution equipment room of substations in hot-humid regions[J]. Electrical Engineering, 2026, 27(6): 54-59.

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https://dqjs.cesmedia.cn/EN/Y2026/V27/I6/54

[1] 顾晨, 尤婷婷, 刘明涛, 等. 变电站高压开关柜防凝露技术方案[J]. 电气技术, 2019, 20(11): 97-100, 120.
[2] 杨芳, 潘岐泽. 12 kV高压开关柜受潮凝露防治技术研究[J]. 高压电器, 2018, 54(8): 40-47.
[3] 舒胜文, 许俊炜, 占兆璇, 等. 高湿环境下40.5 kV开关柜凝露发展特性与加热器布置方法[J]. 高电压技术, 2023, 49(2): 493-504.
[4] Cho W, Iwamoto S, Kato S.Condensation risk due to variations in airtightness and thermal insulation of an office building in warm and wet climate[J]. Energies, 2016, 9(11): 875.
[5] 王流火, 孙帅, 王增彬, 等. 变电站设备箱体温、湿度场及凝露的数值模拟[J]. 高压电器, 2020, 56(1): 24-29.
[6] 潘岐泽, 杨芳, 杨志. 12 kV高压开关柜受潮凝露机理及防治关键技术探讨[J]. 电力系统保护与控制, 2019, 47(5): 160-172.
[7] 黄毓玲, 李贺, 董召强, 等. 基于半导体技术的变电站开关柜除湿技术[J]. 电气技术, 2020, 21(3): 141-145.
[8] Jiang Zitao, Kobayashi T, Yamanaka T, et al.Validity of Orifice equation and impact of building parameters on wind-induced natural ventilation rates with minute mean wind pressure difference[J]. Building and Environment, 2022, 219: 109248.
[9] Hwang K I, Jeong Y S, Han J.Indoor condensation prediction based on a surface temperature esti- mation[J]. International Journal of Communication Systems, 2021, 34(2): e4064.
[10] 陈玉辉, 戴人杰, 刘明涛, 等. 地下双层结构变配电站环境控制技术研究[J]. 电气技术, 2019, 20(10): 80-85, 91.
[11] 郭屹博, 张强, 王宁, 等. 浇注母线槽温度场及散热影响因素研究[J]. 电气工程学报, 2025, 20(6): 485-494.
[12] 王军委, 邓小玉, 孙鹏程. 中压开关柜温升问题研究[J]. 电气技术, 2020, 21(12): 56-61.
[13] 李元, 薛建议, 任双赞, 等. 高压开关柜温湿度分布的三维数值模拟研究[J]. 电工技术学报, 2019, 34(24): 5095-5103.
[14] 郭红斌, 马驰, 文正其. 预制舱式模块化变电站关键技术及展望[J]. 电气技术, 2023, 24(9): 1-10, 19.