电力系统及其自动化学报2019，Vol.31Issue(3)：89-95,7.DOI:10.3969/j.issn.1003-8930.2019.03.013
应用盘面特征识别红外检测盲区的零值绝缘子
Identification of Zero-value Insulators in Infrared Detection Blind Zone Using Disk Characteristics
摘要
Abstract
The detection blind zone exists in the infrared detection of zero-value insulators based on the characteristics of the steel cap,and the leakage detection will seriously threaten the safe operation of power grid. In this paper,the disk characteristics are introduced to the criterion for the identification of deterioration,and a disk temperature rise model for a wet polluted insulator string is established. The operation states,such as the dry surface band of the insula?tor at different positions in the string and the dry band arc,are adopted in the identification;according to the power equilibrium in the heat exchange process,the distribution of disk temperature rise is obtained;based on the disk tem?perature difference between the zero-value insulator and the adjacent insulators,the zero-value insulator in the infrared detection blind zone can be identified. Both simulation and experimental results show that in the wet polluted condition, the zero-value insulator disk presents the"negative temperature difference"characteristic,and the difference degree is mainly determined by surface contamination degree,air humidity,and the position of the zero-value insulator in the string.关键词
零值绝缘子/检测盲区/红外成像/盘面温升/发热模型Key words
zero-value insulator/detection blind zone/infrared imaging/disk temperature rise/heating model分类
信息技术与安全科学引用本文复制引用
万亚玲,李娜,李唐兵,张也,彭子健,姚建刚..应用盘面特征识别红外检测盲区的零值绝缘子[J].电力系统及其自动化学报,2019,31(3):89-95,7.基金项目
国网四川省电力公司科技资助项目"基于数字物理混合仿真的智能变电站技能培训考评系统"、"智能变电站继电保护及自动化故障可视化分析"(52192215000102) （52192215000102）
