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线路金具沙粒磨损模拟试验:试验设置与电晕分析 被引量:17

Sand Erosion Simulation Experiments on Link Hardware of Transmission Lines: Test Setting and Corona Analysis
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摘要 沙尘暴中沙粒参与了线路金具的磨损,加快了金具的磨损速度。为此系统研究了影响线路金具磨损的沙尘粒径与成分、风力特性等因素,在此基础上,从实验角度模拟了金具沙粒磨损行为,用紫外成像仪分析了风力、沙粒等因素对磨损线路金具电晕的影响。结果表明:磨损的沙粒成分宜以石英砂为主,应选用1.0 mm以下的沙尘颗粒作为磨料;磨损主要出现在接触部位,磨损形成的粗糙部位容易产生电晕;电晕光斑大小分别随着时间和接触应力呈饱和正相关关系;电晕光斑随着沙粒粒径迅速上升到顶峰后缓慢下降,最大光斑出现在沙粒颗粒0.09mm~0.1mm处。研究成果可为沙漠风害区域线路金具设计与检修提供技术支撑。 Sand from sandstorm takes part in erosion process of link hardware of transmission lines, which accelerates erosion rate. By analyzing factors such as sand diameter, sand component, we simulated sand erosion experiments to obtain the behaviors of link hardware of transmission lines, and used an ultraviolet imager to analyze the factors affecting corona of the link hardware. The results show that erosion sand components mainly consist of quartz grains, and the grains with the diameters about under 3 mm are applied as erosion materials. Erosion part mainly occurs in contact areas, and corona discharges appear at rough points under high voltages. The sizes of corona spots have a saturate and positive correlation with the sand erosion time and stress, respectively. The sizes of corona spots rise with the sand diameters quickly to the peak value, and decline gradually. The peak value appears with the sand diameters of about 0.09 mm~0.1 mm. The results provide the references for the design and maintenance of link hardware in deserts.
作者 赵建平 邓鹤鸣 张伟 曾文君 谢恒 蔡炜 ZHAO Jianping;DENG Heming;ZHANG Wei;ZENG Wenjun;XIE Heng;CAI Wei(State Grid Xinjiang Electric Power Co.,Ltd.,Urumqi 830011,China;Nanrui Group(State Grid Electric Power Research Insti-tute)Co.,Ltd.,Nanjing 211106,China;Wuhan NARI Limited Liability Company,State Grid Electric Power Research Institute,Wuhan 430074,China;China Electric Power Research Institute,Wuhan 430074,China)
出处 《高电压技术》 EI CAS CSCD 北大核心 2018年第9期2904-2910,共7页 High Voltage Engineering
基金 国家电网公司科技项目(GY71-18-017)~~
关键词 线路金具 沙粒磨损 机械性能 微观分析 输电线路 hardware sand abrasion mechanical property microanalysis transmission line
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