摘要
为提升电力开关柜散热性能、提高供配电稳定性,本文依据传热学基础理论对电力开关柜传热过程进行分析,采用溶液共混法成功制备了适用于电力开关柜母线散热的涂层材料,并基于电磁-热-流多物理场耦合原理构建了电力开关柜涂层-热分析模型,结合母线负载电流计算理论,从涂层热导率、发射率等方面对涂覆散热涂层前后的电力开关柜传热特性进行分析。结果表明:涂层热导率相比于涂层发射率对母线温升影响较小,母线表面涂覆涂层之后,B相母线表面发射率由0.2增大到0.846时,三相母线最大负载电流与未涂覆相比提升18.75%。
In order to improve the heat dissipation performance of the power switch cabinet and improve the stability of power supply and distribution,this paper analyzes the heat transfer process of the power switch cabinet based on the basic theory of heat transfer.The coating material suitable for the heat dissipation of the power switch cabinet is successfully prepared by using the solution blending method,and the coating thermal analysis model of the power switch cabinet is constructed based on the multi-physical field coupling principle of electromagnetic-heat-flow.Based on the theory of busbar load current calculation,the heat transfer characteristics of power switch cabinet before and after coating are analyzed from the aspects of coating thermal conductivity and emissivity.The results show that the thermal conductivity of the coating has less influence on the temperature rise of the busbar than the emissivity of the coating.When the emissivity of the B-phase busbar increases from 0.2 to 0.846 after the coating,the maximum load current of the three-phase busbar increases by 18.75%compared with that without the coating.
作者
陈德敏
许浩文
王昭
陆彪
王郭兴
王行银
CHEN Demin;XU Haowen;WANG Zhao;LU Biao;WANG Guoxing;WANG Xingyin(School of Civil Engineering,Anhui University of Technology,Ma’anshan 243032,China)
出处
《电工电能新技术》
CSCD
北大核心
2024年第2期12-19,共8页
Advanced Technology of Electrical Engineering and Energy
基金
安徽省住房城乡建设科学技术计划项目(2022-YF088、2022-YF057)
安徽省高校科学研究项目(YJS20210352)。
关键词
电力开关柜
母线温升
散热涂层材料
涂层-热分析模型
散热性能分析
power switch cabinet
busbar temperature rise
heat dissipation coating material
coating thermal analysis model
heat dissipation performance analysis
