高压电器2017，Vol.53Issue(7)：38-44,7.DOI:10.13296/j.1001-1609.hva.2017.07.007
基于流注起始判据的球—板—球短空气间隙击穿电压计算
Breakdown Voltage Calculation of Short Sphere-plane-sphere Air Gap Based on Streamer Inception Criteria
摘要
Abstract
A lot of attempts are made to calculate the breakdown voltage of typical electrode structures,which is important for the design of external insulation,but in fact the influence of floating metals should often be analyzed in high voltage transmission and transformation projects.Therefore,3 kinds of streamer inception criteria including Raether-Meek criterion,critical charge criterion and photoionization criterion are adopted in this paper to calculate the breakdown voltage of short sphere-plane-sphere air gap with the consideration of floating metals,and the power-frequency withstand voltage tests are carried out for the comparison.The results indicate that the calculated values are in good accordance with the experimental results of short sphere-plane-sphere air gap in slightly uneven electric field and all of the relative errors and the mean absolute percentage errors are less than 7.5％ and 4％ respectively;the accuracy of the calculated results based on photoionization criterion is the highest with the mean absolute percentage errors of 2.5％.The study verifies the validity and generalization values of streamer inception criteria within a certain range,and contributes to explaining the discharge mechanism of complex air gap in slightly uneven electric field.关键词
稍不均匀电场/球—板—球短空气间隙/击穿电压/流注起始判据Key words
slightly uneven electric field/short sphere-plane-sphere air gap/breakdown voltage/streamer inception criteria引用本文复制引用
阮江军,唐烈峥,邱志斌,黄道春,廖一帆,黄从鹏..基于流注起始判据的球—板—球短空气间隙击穿电压计算[J].高压电器,2017,53(7):38-44,7.基金项目
特高压工程技术(昆明、广州)国家工程实验室开放基金(NEL201509) （昆明、广州）
中国博士后科学基金(2016M602354).Project Supported by National Engineering Laboratory for Ultra High Voltage Engineering Technology(Kunming,Guangzhou) (NEL201509),China Postdoctral Science Foundation(2016M602354). （2016M602354）
