摘要
随着输变电设备增容技术的研究和推广,温升及热点温度作为输变电设备增容中的关键因素越来越受到学者的关注。基于传热学原理和热点类比法,将户内型三相共箱式气体绝缘母线内部传热过程等效为一个简单的集总参数热路,考虑导体热容、导体和外壳分别与SF_6气体之间的非线性热阻以及SF_6气体黏度随温度变化等因素,提出了气体绝缘母线动态等效热路模型;并设计了三相气体绝缘母线温度测量试验,将模型计算结果与试验结果进行对比分析,验证了气体绝缘母线动态热路模型的准确性和有效性。
With the research and extension of compatibility technology of power transmission equipment, tem-perature rise and hot spot temperature, which are the key elements of power transmission equipment, attract more and more researchers’ attention. Based on the principle of heat transfer and hot analogy method, the heat transfer process in three-phase enclosed GIS bus bar is equivalent to a simple thermal circuit of lumped parameter, consid-ering the heat capacity of the conductors, the nonlinear thermal resistance between the conductor and the tank respectively with the SF6 gas and the SF6 viscosity changes with temperature, and the equivalent thermal circuit model of three-phase enclosed GIS bus bar is established. The temperature measurement experiment of three-phase enclosed GIS bus bar is designed, the modeFs calculation results are compared with the experimental results, and the accuracy and effectiveness of the dynamic thermal-circuit model is verified.
出处
《科学技术与工程》
北大核心
2017年第12期184-189,共6页
Science Technology and Engineering
关键词
气体绝缘母线
SF6气体黏度
温升
动态热路模型
gas insulated bus SF6 viscosity temperature rise dynamic thermal-circuit model
