中国电机工程学报2026，Vol.46Issue(5)：2104-2114,中插30,12.DOI:10.13334/j.0258-8013.pcsee.250429
考虑外壳不均匀换热边界的三相共箱式GIS母线瞬态温升MRT-LBM-EnKF模拟
MRT-LBM-EnKF Simulation of Transient Temperature Rise of Three-phase Enclosure GIS Bus Considering Non-uniform Heat Transfer Boundary of Shell
摘要
Abstract
The rapid and accurate prediction for the temperature rise of gas insulated switchgear(GIS)is a necessary prerequisite for realizing its thermal health management.However,the complex boundary conditions on site make it difficult to keep the prediction consistent with the actual temperature rise.In order to obtain the transient temperature rise and heat transfer characteristics of three-phase enclosure GIS bus under the constraints of complex unknown heat dissipation boundary on site.In this paper,a three-phase enclosure GIS simulation model based on multiple-relaxation-time lattice Boltzmann method(MRT-LBM)and ensemble Kalman filter(EnKF)data assimilation method is proposed.Firstly,the multi-relaxation scheme is used to improve the numerical stability of the GIS model under high Rayleigh number(Ra).Then the EnKF algorithm is used to assimilate the MRT-LBM calculation results and the experimental results.Finally,the accurate prediction of the temperature rise of the GIS conductor is realized.Under the transient time-varying current,the maximum relative error of the constructed model is reduced from 26.28％to 1.31％compared with the MRT-LBM calculation results without data assimilation.The model is used to simulate the heat transfer inside GIS under different Ra conditions.The results show that with the increase of Ra,the heat transfer performance of GIS increases and the temperature rise decreases.The proposed method provides an explicit algorithm for accurately predicting the temperature rise of GIS under complex boundary constraints and exploring the internal heat transfer characteristics of GIS under different Ra.关键词
气体绝缘组合电器/复杂边界/多松弛格子Boltzmann方法/集合卡尔曼滤波/数据同化Key words
gas insulated switchgear(GIS)/complex boundary/multiple-relaxation-time lattice Boltzmann model(MRT-LBM)/ensemble kalman filter(EnKF)/data assimilation分类
信息技术与安全科学引用本文复制引用
于文旭,关向雨,赖泽楷,莫狄,舒胜文..考虑外壳不均匀换热边界的三相共箱式GIS母线瞬态温升MRT-LBM-EnKF模拟[J].中国电机工程学报,2026,46(5):2104-2114,中插30,12.基金项目
国家自然科学基金项目(52207150).Project Supported by National Natural Science Foundation of China(52207150). （52207150）
