| 引用本文: | 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. |
| PAN Qize,YANG Fang,YANG Zhi.Discussion on mechanism of the dampness and dewing inside 12 kV high-voltage switchgear and its key control techniques[J].Power System Protection and Control,2019,47(5):160-172 |
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| 摘要: |
| 如何防止开关柜内受潮导致的设备误动和拒动，具有重要的现实意义。基于此，对开关柜受潮凝露机理及其防治关键技术进行了探讨。首先，介绍了开关柜结构特点及其受潮凝露防治现状，详细分析了开关柜凝露产生的机理、原因、条件和危害。然后，对防凝露相关的措施和改进方法进行了简要描述，这些方法可有效消除开关柜在运行过程中发生的故障。最后，提出了一种开关柜受潮凝露机理的研究方案。该方案涵盖了开关柜受潮凝露发生的影响要素分析和受潮凝露机理研究模拟环境的搭建方案，并采用“源”的概念进行了干燥气源除湿系统的方案设计。基于该方案，对开关柜受潮凝露机理及防治关键技术进行了展望。 |
| 关键词: 开关柜 受潮凝露 防治措施 故障 凝露点计算 |
| DOI：10.7667/PSPC180346 |
| 分类号: |
| 基金项目:中国南方电网科技项目资助(GDKJXM20162530 (031800KK52160015)) |
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| Discussion on mechanism of the dampness and dewing inside 12 kV high-voltage switchgear and its key control techniques |
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PAN Qize,YANG Fang,YANG Zhi
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(Qingyuan Power Supply Bureau of Guangdong Power Grid Co., Ltd, Qingyuan 511518, China)
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| Abstract: |
| How to prevent the equipment from malfunctioning and refusing caused by moisture in the switchgear has important practical significance. On this basis, the occurrence mechanisms of moisture and dewing in the switchgear and its key technologies for prevention and control are discussed. Firstly, the structural characteristics of the switchgear and the status quo of the prevention and control of the moisture and dewing are introduced. The mechanism, causes, conditions and hazards of the dewing of the switchgear are analyzed in detail. Then, the anti-dewing related measures and improvement methods are briefly described. These methods can effectively eliminate the failures occurred in the switchgear during operation. Lastly, an investigation scheme for the mechanism of moisture and dewing in switchgear is proposed. The scheme covers the analysis of the influence factors on the phenomena of moisture and dewing in the switchgear and the construction scheme of the simulation environment for the moisture and dewing mechanism research, and moreover, in which the concept of source is adopted to design a dry gas source based dehumidification system. Based on this scheme, the mechanism of moisture and dewing and the key technologies of prevention and control for the switchgear are prospected. This work is supported by Science and Technology Projects of China Southern Power Grid (No. GDKJXM20162530 (031800KK52160015)). |
| Key words: switchgear dampness and dewing countermeasure fault condensation point calculation |
