风机叶片电晕触发阈值的影响因素分析

doi:10.16265/j.cnki.issn 1003-3033.2020.12.010

中国安全科学学报 ›› 2020, Vol. 30 ›› Issue (12): 70-78.doi: 10.16265/j.cnki.issn 1003-3033.2020.12.010

风机叶片电晕触发阈值的影响因素分析

李祥超¹ 副教授, 焦雪², 蔡露进³, 徐晓培¹

1 南京信息工程大学气象灾害预报预警与评估协同创新中心,江苏南京 210044;
2 江苏省气象灾害防御中心,江苏南京 210008;
3 贵州省气象服务中心,贵州贵阳 550002

收稿日期:2020-09-06 修回日期:2020-11-16 出版日期:2020-12-28 发布日期:2021-07-15
作者简介:李祥超 (1969—),男,江苏南京人,博士,副教授,主要从事雷电安全防护技术方面的研究。E-mail:lxcfanglei@163.com。
基金资助:
国家重点研发计划项目(2017YFC1501505);江苏省自然科学基金青年基金资助(BK20191094)。

Influencing factors of corona trigger threshold of fan blade

LI Xiangchao¹, JIAO Xue², CAI Lujin³ and XU Xiaopei¹

1 Collaborative Innovation Center on Forecast and Evaluation of Meteorological Disasters, Nanjing University of Information Science & Technology, Nanjing Jiangsu 210044, China;
2 Jiangsu Meteorological Disaster Prevention Technology Center, Nanjing Jiangsu 210008, China;
3 Guizhou Meteorological Service Center, Guiyang Guizhou 550002, China

Received:2020-09-06 Revised:2020-11-16 Online:2020-12-28 Published:2021-07-15

摘要/Abstract

摘要： 为得到风机叶片尖端在发生电晕放电时尖端处的电场强度,基于叶片电晕放电特性的理论,建立风机缩比模型,电晕触发试验不同叶片长度和转动角度,计算得到风机叶片的电晕环境阈值与电晕触发阈值。对比电晕环境阈值与电晕触发阈值在不同条件下的变化特征。研究表明:风机叶片的电晕环境阈值随着叶片长度的增加而减小;当转动角度为0～60°时,随着转动角度的增加而增大。风机叶片的电晕触发阈值基本上不随叶片长度以及转动角度的变化而变化,试验中得到风机叶片的电晕触发阈值约337.15 kV/m,但会受到大气条件以及空间带电粒子影响在测试时出现一定浮动。

关键词: 风机叶片, 电晕触发阈值, 电晕放电, 电晕环境阈值, 电场畸变

Abstract: In order to calculate electric field strength at tip of fan blade when corona discharge occurs, scale models were established based on characteristics of corona discharge. Tests were performed for different lengths and rotation angles of fan blades, and corona environmental threshold and corona trigger threshold were calculated and their variation laws were compared under different conditions. The results show that corona environmental threshold decreases with increase of blade length but increases with that of rotation angle which is within 0-60°. The corona trigger threshold obtained from tests is about 337.15 kV/m, remaining generally constant in spite of length and angle changes, but it shows a certain fluctuation due to influence of atmospheric conditions and charged ions.

Key words: fan blade, corona trigger threshold, corona discharge, corona environmental threshold, electric field distortion

中图分类号:

X946

李祥超, 焦雪, 蔡露进, 徐晓培. 风机叶片电晕触发阈值的影响因素分析[J]. 中国安全科学学报, 2020, 30(12): 70-78.

LI Xiangchao, JIAO Xue, CAI Lujin and XU Xiaopei. Influencing factors of corona trigger threshold of fan blade[J]. China Safety Science Journal, 2020, 30(12): 70-78.

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风机叶片电晕触发阈值的影响因素分析

Influencing factors of corona trigger threshold of fan blade

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