基于计算流体力学的支柱绝缘子积污特性研究

发布时间：2019-05-20 19:46

【摘要】：为了研究影响绝缘子积污的因素,收集了支柱绝缘子的尺寸数据,建立了风洞仿真模型。利用计算流体力学的相关理论与方法,分析了4种因素对绝缘子表面污秽颗粒物碰撞质量的影响。仿真结果表明:颗粒物质量浓度对绝缘子表面颗粒物碰撞质量的影响是线性的;随着风速增加,绝缘子上、下表面碰撞质量均迅速增加,但在表面形状差异较大时会有不同的增加趋势;颗粒粒径增大将使上表面碰撞质量迅速增加,对下表面碰撞质量则没有明显影响;绝缘子伞形不变时,杆径增大将使碰撞质量密度显著减小。对比仿真结果与试验结果发现:仿真结果与文献中的风洞试验所得数据差距较大,分析认为是对于黏附的考虑不足所引起的。
[Abstract]:In order to study the factors that affect the contamination of the insulator, the size data of the post insulator is collected, and a wind tunnel simulation model is established. The influence of four factors on the collision quality of the surface of the insulator was analyzed by using the related theory and method of computational fluid mechanics. The simulation results show that the influence of the mass concentration of the particulate matter on the quality of the particle impact on the surface of the insulator is linear; with the increase of the wind speed, the impact mass of the upper and lower surfaces of the insulator increases rapidly, but there will be different increasing tendency when the surface shape difference is large; The increase of particle size will lead to a rapid increase of the impact mass of the upper surface, and there is no obvious effect on the impact quality of the lower surface; when the shape of the insulator is unchanged, the increase of the rod diameter will lead to a significant reduction in the mass density of the collision. The results of the simulation and the results of the test show that the results of the simulation and the data of the wind tunnel test in the literature are large, and the analysis is considered to be caused by the insufficient consideration of the adhesion.
【作者单位】：清华大学深圳研究生院;南方电网科学研究院;
【基金】：国家自然科学基金(51377093) 中国南方电网重点科技项目~~
【分类号】：TM216

【参考文献】