Research on 1100kV GIS Bus Thermal Network Model with Spring Contacts

Yapei Liu, Yongqi Yao, Jianying Zhong, Zhijun Wang, Hao Zhang, Miaoxin Li
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Abstract

Based on the principle of thermoelectric analogy, the thermal network topology of the coaxial bus of the Gas Insulated equipment (GIS) and the GIS bus with multiple spring contacts was established, and the thermal network simulation model of the 1100kV GIS bus was further established. The temperature appreciation of each detection position under the test condition was obtained by calculation, and the calculation time was about 10s. The real prototype was built and the temperature rise test was carried out. The simulation and test results show that the maximum relative error of spring contact temperature rise is 2.70%, that of conductor temperature rise is 7.58%, and that of shell temperature rise is 3.80%, which proves the rationality of the method and the accuracy of the results.
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带弹簧触点的1100kV GIS母线热网模型研究
基于热电类比原理,建立了气体绝缘设备(GIS)同轴母线和多弹簧触点GIS母线的热网拓扑,并进一步建立了1100kV GIS母线的热网仿真模型。通过计算得到试验条件下各检测位置的温升,计算时间约为10s。制作了实物样机,并进行了温升试验。仿真和试验结果表明,弹簧接触温升的最大相对误差为2.70%,导体温升的最大相对误差为7.58%,外壳温升的最大相对误差为3.80%,证明了该方法的合理性和结果的准确性。
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