接地系统冲击响应过程的并行计算

Parallel computing for transient response of grounding system

为了利用并行计算研究接地系统的冲击响应,在阻塞通信模式条件下提出了一个并行编程模型,对进程拓扑结构的优化设计进行了讨论。利用微机集群并行系统研究了接地系统冲击响应过程,得到了较好的并行效率,并对其中出现的超线性加速现象进行了分析。利用数值模拟结果讨论了冲击接地阻抗(TGR)与水平接地体厚度之间的关系。结果表明,接地体厚度对接地阻抗有一定的影响,但当厚度从0.33 m增加到0.5 m时,接地体性能没有显著改善。

To research transient response of the grounding system by parallel computing, a parallel programming model was developed by the blocking communication mode. The optimal design of virtual topo- logical structure was also discussed. The transient grounding resistance （TGR） was calculated on a personal computer cluster. High parallel efficiency was achieved and the superlinear acceleration was also analyzed based on the computation result. The results show that the depth of the horizontal grounding conductor affects TGR, but the performance of the grounding system improves little when the depth increases from 0.33 m to 0. 5 m.