40.5 kV/4000 A SF_(6)柜式气体绝缘开关设备散热方案设计  

Design of Heat Dissipation Structure for 40.5 kV/4000 A SF_(6) Cubicle Gas Insulated Switchgear

作　　者：龙远炎 杨悖思 李俊豪 王广先 LONG Yuanyan;YANG Beisi;LI Junhao;WANG Guangxian(CHINT Electric Co.,LTD.,Shanghai 201600,China)

机构地区：[1]正泰电气股份有限公司,上海201600

出　　处：《电器与能效管理技术》2025年第3期76-80,共5页Electrical & Energy Management Technology

摘　　要：通过对箱式气体绝缘开关设备(C-GIS)发热和散热机理进行分析,完成40.5 kV/4000 A设备主电回路涡流仿真,优化主电回路导体设计。通过增加3 mm主导体厚度降低涡流损耗,回路单相电阻由34μΩ降至22μΩ。根据主电回路温升仿真断路器极柱发热位置,分析散热结构,改善气体对流风道,模拟开关设备柜内外气体对流情况,制造开关设备样机并完成温升试验。结果表明,在强制风冷条件下,极柱散热方案改进的断路器静端温升最大降低约15.4 K。Through the analysis of the heating and heat dissipation mechanisms of the cubicle gas-insulated switchgear(C-GIS),the eddy current simulation of the main electrical circuit of the 40.5kV/4000A equipment is completed,and the design of the conductor of the main electrical circuit is optimized.Through increasing the thickness of the main conductor by 3mm,the eddy current loss is reduced,and the single-phase resistance of the circuit decreases from 34μΩto 22μΩ.According to the temperature rise simulation of the main electrical circuit,the heating position of the circuit breaker pole is determined,the heat dissipation structure is analyzed,the gas convection air duct is improved,and the gas convection situation inside and outside the switchgear cabinet is simulated.The prototype of the switchgear is manufactured and a temperature rise test is carried out.The results show that the maximum temperature rise reduction of the static terminals of the circuit breaker with the improved pole heat dissipation scheme is approximately 15.4 K under the condition of forced air cooling.

关 键 词：气体绝缘开关设备 热传递 散热面积 对流换热 温升控制 

分 类 号：TM564.1[电气工程—电器]