西安交通大学电力设备电气绝缘国家重点实验室,西安,710049
网络首发:2020-07-10,
纸质出版:2020
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贾云飞 1, 高璐 1, 汲胜昌 1, 等. 1 100 kV气体绝缘金属封闭输电线路用三支柱绝缘子电气性能优化[J]. 西安交通大学学报, 2020,54(7):168-179.
Electrical Performance Optimi-ation for Tri-Post Insulator on 1 100 kV Gas-Insulated Metal-Enclosed Transmission Line[J]. 2020, 54(7): 168-179.
贾云飞 1, 高璐 1, 汲胜昌 1, 等. 1 100 kV气体绝缘金属封闭输电线路用三支柱绝缘子电气性能优化[J]. 西安交通大学学报, 2020,54(7):168-179. DOI: 10.7652/xjtuxb202007020.
Electrical Performance Optimi-ation for Tri-Post Insulator on 1 100 kV Gas-Insulated Metal-Enclosed Transmission Line[J]. 2020, 54(7): 168-179. DOI: 10.7652/xjtuxb202007020.
为优化交流1 100 kV气体绝缘输电线路中三支柱绝缘子的电气性能
提出了一种基于遗传算法的结构参数优化方法。建立三支柱绝缘子电场和应力场仿真模型
对绝缘子电气性能和机械性能进行校验
发现最大表面场强位于支柱和中心圆柱的连接处
为12.13 MV·m
-1
大于12 MV·m
-1
的许用值
可能引发闪络
有必要进行电气性能优化。建立三支柱绝缘子参数化模型
仿真研究各结构参数对三支柱绝缘子电气性能的影响
发现各结构参数的增大对绝缘子电气性能有不同程度的优化
但也会造成绝缘子体积的增加。在满足机械性能需求和绝缘子体积保持不变的条件下
以提高电气性能为目标
提出基于遗传算法的三支柱绝缘子结构参数优化方案
并且为减小计算量
提出该方案的简化方法。结果表明:在相同电压下
优化后的三支柱绝缘子的最大表面场强降低为11.36 MV·m
-1
绝缘裕度提高了6.3%
优化效果较好。所提方法兼顾了机械性能和绝缘子体积
具有较高的实用性和计算效率。
For optimi-ing electrical performance of tri-post insulator on AC 1 100 kV GIL
structural parameter optimi-ation with genetic algorithm is carried out. Electric field and stress field simulation models of tri-post insulator are established. Checking the electrical and mechanical performances of the insulator
it is found that the maximum surface electrical field intensity is 12.13 MV-m
-1
at the connection between the pillar and the central cylinder
which is higher than the allowable value of 12 MV-m
-1
. It is thus necessary to optimi-e the electrical performance. A parametric model of tri-post i
nsulator is constructed and used to analy-e the influence of structural parameters on electrical performance. It is found that the increase of each structure parameter can optimi-e the electrical performance
but this also leads to the increase of insulator volume. To improve the electrical performance
a genetic algorithm-based optimi-ation scheme for the structure para
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