Radial Distribution of Discharge Intensity about Disk-shaped Insulator Based on Ultraviolet Image
-
摘要: 为研究盘式绝缘子积污放电的紫外图谱特征，提出了一种基于图像分割的光斑面积计算方法。首先，基于C-V模型，开展积污绝缘子紫外图像径向分布的研究。接着，与红外温度场曲线进行对比研究，验证其合理性。最后，研究不同电阻率、风速情况下积污绝缘子的紫外图谱特征。研究结果表明：C-V模型应用于图像处理中，具有较强的抗干扰性，适用于盘式绝缘子径向放电强度的研究；随着表面电阻率的降低，盘式绝缘子紫外光斑面积会增大；风速对盘式绝缘子放电强度有明显的影响；研究结果可为盘式绝缘子径向放电强度的评估提供一定的参考。Abstract: A method for calculating the flare area based on image segmentation is proposed to study the ultraviolet image characteristics of the wet-contaminated discharge of disk-shaped insulators. First, based on the C-V model, the radial distribution of an ultraviolet image of a disk-shaped insulator is studied. It is then compared with the infrared temperature-field curve to verify its rationality. Finally, the ultraviolet image characteristics of the wet-contaminated insulators with different electrical resistivities and wind speeds are studied. The results show that the C-V model has strong anti-interference performance when applied to image processing, and is suitable for the study of the radial discharge intensity of disk-shaped insulators. The ultraviolet flare area of the insulator increases with a decrease in the surface resistivity. The wind speed has an obvious influence on the discharge intensity of the disk-shaped insulator. The results provide a reference for evaluating the radial discharge intensity of disk-shaped insulators.
-
Key words:
- disk-shaped insulator /
- ultraviolet image /
- discharge intensity /
- C-V model /
- radial distribution
-
图 4 不同电阻率下的光斑面积径向变化
Figure 4. Radial variation of ultraviolet flare area under different resistivities
-
[1] 宿志一, 李庆峰. 我国电网防污闪措施的回顾和总结[J]. 电网技术, 2010, 34(12): 124-130. https://www.cnki.com.cn/Article/CJFDTOTAL-DWJS201012026.htmSU Zhiyi, LI Qingfeng. Historical review and summary on measures against pollution flashover occurred in power grids in China[J]. Power System Technology, 2010, 34(12): 124-130. https://www.cnki.com.cn/Article/CJFDTOTAL-DWJS201012026.htm [2] 李炼炼, 孟刚, 邓慰, 等. 输变电设备电晕放电紫外图谱量化参数提取[J]. 高压电器, 2017, 53(12): 229-235. https://www.cnki.com.cn/Article/CJFDTOTAL-GYDQ201712037.htmLI Lianlian, MENG Gang, DENG Wei, et al. Quantification parameters extraction from ultraviolet image of corona discharge of power transmission and transformation equipment[J]. High Voltage Apparatus, 2017, 53(12): 229-235. https://www.cnki.com.cn/Article/CJFDTOTAL-GYDQ201712037.htm [3] 黄青丹, 杨忠毅, 宋浩永, 等. 不同材料绝缘子表面的自然污秽成分测量与离子配对分析[J]. 高电压技术, 2016, 42(12): 3917-3923. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201612031.htmHUANG Qingdan, YANG Zhongyi, SONG Haoyong, et al. Measurement and ion-pairing analysis of natural contamination constituents on insulators with different material[J]. High Voltage Engineering, 2016, 42(12): 3917-3923. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201612031.htm [4] 周羽生, 罗屿, 赵纯, 等. 人工气候室雾霾模拟方法及装置[J]. 高电压技术, 2017, 43(3): 909-914. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201703030.htmZHOU Yusheng, LUO Yu, ZHAO Chun, et al. Haze-fog simulation method and device in the artificial climate chamber[J]. High Voltage Engineering, 2017, 43(3): 909-914. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201703030.htm [5] 汪佛池, 马建桥, 律方成, 等. 污秽和水分对瓷支柱绝缘子发热的影响[J]. 高电压技术, 2015, 41(9): 3054-3060. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201509034.htmWANG Fochi, MA Jianqiao, LYU Fangcheng, et al. Pollution and water molecule effects on porcelain post insulator heating[J]. High Voltage Engineering, 2015, 41(9): 3054-3060. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201509034.htm [6] 周志成, 赵晨龙, 高嵩, 等. 绝缘子自然污秽下受潮及导电特性分析[J]. 高电压技术, 2014, 40(12): 3680-3687. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201412005.htmZHOU Zhicheng, ZHAO Chenlong, GAO Song, et al. Analysis on wetting and conductive properties of natural polluted insulators[J]. High Voltage Engineering, 2014, 40(12): 3680-3687. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201412005.htm [7] 陈磊, 周仿荣, 马仪, 等. 悬式复合绝缘子电晕放电紫外图像光斑面积[J]. 高压电器, 2013, 49(8): 60-67. https://www.cnki.com.cn/Article/CJFDTOTAL-GYDQ201308012.htmCHEN Lei, ZHOU Fangrong, MA Yi, et al. Ultraviolet image facular area vary characteristic and apparent discharge estimation of suspension composite insulator corona[J]. High Voltage Apparatus, 2013, 49(8): 60-67. https://www.cnki.com.cn/Article/CJFDTOTAL-GYDQ201308012.htm [8] 王红梅, 丁登伟, 贾志杰, 等. 恒压下GIS盆式绝缘子表面缺陷的长间歇性放电特性研究[J]. 中国电机工程学报, 2018, 38(20): 6188-6194. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGDC201820030.htmWANG Hongmei, DING Dengwei, JIA Zhiwei, et al. Research on intermittent discharge characteristics of defects on the surface of disc-insulators of GIS under long-time constant voltage[J]. Proceedings of the CSEE, 2018, 38(20): 6188-6194. https://www.cnki.com.cn/Article/CJFDTOTAL-ZGDC201820030.htm [9] 王梦. 基于绝缘子图像的缺陷检测方法研究[D]. 武汉: 华中科技大学, 2019.WANG Meng. A Thesis Submitted in Partial Fulfillment of the Requirements for the Degree for the Master of Engineering[D]. Wuhan: Huazhong University of Science & Technology, 2019. [10] 艾建勇, 金立军. 基于紫外图像的接触网棒瓷绝缘子污秽状态检测[J]. 电工技术学报, 2016, 31(10): 112-118. https://www.cnki.com.cn/Article/CJFDTOTAL-DGJS201610013.htmAI Jianyong, JIN Lijun. Rod porcelain insulator filth state detection of catenary based on ultraviolet image[J]. Transactions of China Electrotechnical Society, 2016, 31(10): 112-118. https://www.cnki.com.cn/Article/CJFDTOTAL-DGJS201610013.htm [11] 李建波, 高文胜, 刘卫东. 直流GIL绝缘子表面附着金属颗粒局部放电发展过程及严重程度评估[J]. 高压电器, 2018, 54(5): 9-16. https://www.cnki.com.cn/Article/CJFDTOTAL-GYDQ201805003.htmLI Jianbo, GAO Wensheng, LIU Weidong. Evolution process and severity assessment of the partial discharge caused by immobilized metal particles on DC GIL insulator surface[J]. High Voltage Apparatus, 2018, 54(5): 9-16. https://www.cnki.com.cn/Article/CJFDTOTAL-GYDQ201805003.htm [12] 王胜辉, 牛雷雷, 李浩, 等. 基于放电紫外成像特征的污秽线路盘形绝缘子绝缘状态评估[J]. 高压电器, 2019, 55(2): 201-207. https://www.cnki.com.cn/Article/CJFDTOTAL-GYDQ201902029.htmWANG Shenghui, NIU Leilei, LI Hao, et al. Insulation condition evaluation of contaminated disc insulator for transmission lines based on the characteristic of discharge UV imaging characteristics[J]. High Voltage Apparatus, 2019, 55(2): 201-207. https://www.cnki.com.cn/Article/CJFDTOTAL-GYDQ201902029.htm [13] 黄文武, 贺振华, 蔡炜, 等. 基于紫外成像技术的棒−板间隙放电环境因素研究[J]. 高电压技术, 2015, 41(8): 2788-2794. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201508035.htmHUANG Wenwu, HE Zhenhua, CAI Wei, et al. Study on the environmental factors of rod-plane gap discharge based on UV imaging[J]. High Voltage Engineering, 2015, 41(8): 2788-2794. https://www.cnki.com.cn/Article/CJFDTOTAL-GDYJ201508035.htm [14] 陆旭, 罗汉武, 李文震, 等. 电力金具图像故障状态评估[J]. 红外技术, 2020, 42(7): 632-636. http://hwjs.nvir.cn/article/id/hwjs202007005LU Xu, LUO Hanwu, LI Wenzhen, et al. Estate evaluation of image fault of electric power fittings[J]. Infrared Technology, 2020, 42(7): 632-636. http://hwjs.nvir.cn/article/id/hwjs202007005 -
下载:
点击查看大图
图(5)
计量
- 文章访问数: 121
- HTML全文浏览量: 43
- PDF下载量: 19
- 被引次数: 0
