电工技术学报2017，Vol.32Issue(21)：211-217,7.DOI:10.19595/j.cnki.1000-6753.tces.160591
基于雨水混合物模型的平抗直流套管的雨闪故障分析
Rain Flashover Analysis of HVDC Reactor Bushing Using Rainwater-Air Mixture Model
邓万婷 1张勃 2汪涛 1李亮1
作者信息
- 1. 国网湖北省电力公司电力科学研究院高压电气设备现场试验技术国网重点实验室 武汉430077
- 2. 武汉大学电气工程学院 武汉430072
- 折叠
摘要
Abstract
Rain flashover analysis has always been a hotspot in the high voltage insulation research.By using finite-element method,a rain flashover fault in the HVDC bushing of 500 kV reactor has been analyzed.In order to simulate the electric field of the HVDC bushing in the rain,the rainwater and air are assumed as one mixture with equivalent material properties,which are determined by their proportion respectively.Hence,by using the equivalent material properties in the mixture model,the coupling of fluid flow-electric field can be implemented.Simulation results indicate that the rain flashover is more likely to occur on the upper end of the bushing.Owing to the collision and aggregation in the rainwater-air mixture,the electric field intensity in the rain on the upper end of the bushing increases significantly compared to that in the dry environment.Compared with the scene photographs,the actual position where rain flash occurred agrees well with simulations and the veracity is validated.关键词
雨闪/直流套管/流体场-电场耦合/故障分析Key words
Rain flashover/HVDC bushing/fluid field-electric field coupling/fault analysis分类
信息技术与安全科学引用本文复制引用
邓万婷,张勃,汪涛,李亮..基于雨水混合物模型的平抗直流套管的雨闪故障分析[J].电工技术学报,2017,32(21):211-217,7.
