3 150 A中置柜1.1倍自然風冷結構研發及溫升驗證
黃小軍，裴軍，王繼龍，孫哲，吳昊
(正泰電氣股份有限公司，上海 201614)
摘 要：針對 3 150 A 大電流移開式開關柜采用風機進行強制風冷采購成本、運維成本較高的問題，分析了導體發熱、渦流、散熱通道效果對設備溫升的影響程度，提出改善發熱元件散熱的方法和措施，并對開關柜內空氣流風道構建進行了優化，為大電流移開式開關柜應用自然風冷技術降低運維成本，提高設備的可靠性提供技術支撐。
關鍵詞：中置柜；大電流；溫升；自然風冷；渦流；散熱通道
中圖分類號：TM591 文獻標識碼：B 文章編號：1007-3175(2022)02-0052-05
3 150 A Center Cabinet 1.1 Times Natural Air Cooling Structure
Research and Development and Temperature Rise Verification
HUANG Xiao-jun, PEI Jun, WANG Ji-long, SUN Zhe, WU Hao
（CHINT Electric Co., Ltd, Shanghai 201614, China）
Abstract: Many problems, such as high purchase costs and high operation and maintenance costs, exist in the 3 150 A high current movable switchgear when it uses the draught fan to air blast cooling. To solve those problems, this paper analyzed the influence of conductor heating, eddy current, and heat dissipation channel effects on the temperature rise of the equipment and proposed methods and measures to improve the heat dissipation of heating elements.This study proposed methods and measures to improve the heat dissipation of heating elements as well. It optimized the construction of airflow ducts in the switchgear for decreasing the operation and maintenance costs of the high current removable switchgear applied the natural air cooling technology. Besides, it also provided technical support for the reliability of the equipment.
Key words: center cabinet; high current; temperature rise; natural air cooling; eddy current; heat dissipation channel
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