基于子模型法的金具优化设计及其在±1100 kV阀厅中的应用

Optimization Design of Fittings and Its Application in ±1100 kV Valve Hall Based on Sub-model Method

对阀厅内部进行金具优化设计,可以有效地改善其表面的电场分布。但将待优化金具置于整体模型中加载计算和单独计算分析的方法,分别会造成增加工作量和产生较大误差等问题。对此,文中提出了基于子模型法的金具表面电场分析及优化设计方法,即从整体模型中精确提取待优化金具的边界条件,并以此为依据在金具周围局部区域的子模型中进行分析及优化设计。为验证所提方法的有效性,分别从理论分析和算例验证两方面进行阐述,之后将其应用于±1 100 k V阀厅内部金具的优化设计中。结果表明,该方法有效避免了对整体模型的反复计算,既保证了计算精度,又提高了计算效率。

Optimization of fittings can improve the surface electric field distribution, but if the procession is com- pleted in the whole model or separate calculation will greatly increase the amount of calculation and produce large errors respectively. Therefore, this study used sub-model method to precisely extract the boundary conditions of the single fittings in the whole model for the optimization. The effectiveness of the method validated by the theo- retical analysis and numerical examples, then it is applied to the optimization design of the internal fittings of the ±1 100 kV valve hall. This method can avoid the repeated calculation of the whole model in the optimization pro- cess, which not only ensures the accuracy of the calculation, but also reduces the amount of calculation.