大容量气体绝缘开关设备散热技术研究

Research on Heat Dissipation Technology of Large Capacity Gas Insulated Switching Equipment

为解决大容量开关设备温升问题,进行温升与散热技术研究具有重要意义。分析了开关设备的发热原因,并对内部导体进行了载流量计算,分别从热传导、热对流、热辐射三方面对开关设备进行散热设计,并给出多种散热方案,通过FLOEFD热分析计算软件计算出每种散热方案的散热效果,结合经济性、工艺性进行择优选择。将选出的散热方案应用于开关设备,顺利通过了温升试验,为开关设备结构优化和散热设计提供了理论支撑。

In order to solve the temperature rise problem of large capacity switching equipment,it is significant to carry out the research on the temperature rise and dissipation technology.This paper analyzed the heating source of switching equipment and carried out the carrying capacity calculation of internal conductor.The heat dissipation design was carried out from three aspects including heat conduction,heat convection and thermal radiation.A variety of cooling solutions were given.FLOEFD thermal analysis software was used to calculate the heat dissipation effect of each heat dissipation scheme.In combination with the economy and process of each heat dissipation scheme,the preferred choice was made.The selected heat dissipation scheme was applied to the switching equipment so that the temperature rise test successfully passed,which provides the theoretical support for the structure optimization and heat dissipation design of the switching equipment.