DC 40 kV RIP绝缘管型母线大电流温升仿真与试验验证

Simulation and Experimental Validation of Temperature Rise in DC 40 kV RIP Insulated Tubular Busbars Under High Current Conditions

摘要: 为评价DC 40 kV RIP绝缘管型母线9000 A/2 h短时热承载能力，建立等效电—热耦合模型，并结合9000 A/2 h、8000 A/3 h和7000 A试验校核参数。结果表明，测温扩展不确定度约±2.6 ℃，各工况仿真—试验差值均处于该不确定度范围内；9000 A持续2 h时导体侧最高温度约83 ℃、最大温升约43 K，低于50 K工程参考限值，满足本文定义的9000 A/2 h短时温升判据。

Abstract: To evaluate the 9000 A/2 h short-time thermal capacity of a DC 40 kV RIP insulated tubular busbar, an equivalent electro-thermal coupling model was established, and its parameters were calibrated using 9000 A/2 h, 8000 A/3 h and 7000 A tests. The results show that the expanded uncertainty of temperature measurement is about +/-2.6 °C, and the deviations between simulation and test results are within this range. At 9000 A for 2 h, the conductor-side maximum temperature is about 83 °C and the maximum temperature rise is about 43 K, lower than the 50 K engineering reference limit, indicating compliance with the short-time temperature-rise criterion.