输电线路绝缘子串偏角的光纤监测研究  

Research on the optical fiber monitoring for windage angle of transmission line insulator string

作　　者：沈龙 冯婷[2] 梁仕斌 李川[2] 昌明 赵振刚[2] SHEN Long;FENG Ting;LIANG Shibing;LI Chuan;CHANG Ming;ZHAO Zhengang(Zhaotong Power Supply Bureau,Yunnan Power Grid Co.,Ltd.,Kunming 657000,China;College of Information Engineering and Automation,Kunming University of Science and Technology,Kunming 650500,China;Yunnan Electric Test&Research Institute Group Co.,Ltd.,Kunming 650217,China;Kunming Enersun Technology Co.,Ltd.,Kunming 650217,China)

机构地区：[1]云南电网有限责任公司昭通供电局,云南昭通657000 [2]昆明理工大学信息工程与自动化学院,云南昆明650500 [3]云南电力试验研究院(集团)有限公司,云南昆明650217 [4]昆明能讯科技有限责任公司,云南昆明650217

出　　处：《电力科学与技术学报》2020年第5期75-81,共7页Journal of Electric Power Science And Technology

基　　金：国家自然科学基金(51667011)。

摘　　要：输电线路绝缘子串风偏之后使得绝缘子串下端带电结构、输电导线距离杆塔较近,当距离小于最小空气间隙时,将造成放电跳闸。绝缘子的风偏严重影响和威胁着电网系统的安全运行,也将造成巨大的经济损失。根据输电线路绝缘子串的风偏原因及结果,设计并研制出一种基于光纤Bragg光栅的倾角传感器,重锤与等强度悬臂梁相连接,等强度悬臂梁中间部位两侧分别粘贴一个光纤Bragg光栅。将研制的倾角传感器进行封装并确保密封完好,并通过抱箍式夹具组合的方式与光纤Bragg光栅称重传感器共同安装于绝缘子串的顶部。对云南电网某110 kV输电线路30#杆塔的绝缘子串进行风偏监测并与风速数据结合进行分析,得到风偏角随风速变化的特点,为输电线路的安全运行提供了参考。The transmission conductor and charged structure at the bottom of insulator string tend to be close to the transmission tower due to the effect of wind deviation.The discharge and trip-out may occur once the distance between them is less than the minimum air gap value.Therefore,the wind deviation of insulator string threaten the safe operation of power grid seriously and may lead to an enormous economic loss.Under the circumstance,this paper designs and develops a fiber Bragg grating(FBG)tilt sensor.In this sensor,the gravity hammer is fastened on the free end of equal strength cantilever beam which have one FGB pasted on the central symmetrical lines of both sides.The developed inclination sensor is packaged and then installed on the top of the insulator string together with the fiber Bragg grating load cell by the pattern of hoop clamp combination.The insulator string on 30#Tower of an 110 kV transmission line in the Yunnan Power Grid is monitored by the installed device.By combinatory analyzing the monitoring data and wind data,the variation characteristics of windage angle with wind speed are obtained.The non-electric measuring of fiber Bragg grating tilt sensor provides a reference for safe operation of power transmission line.

关 键 词：输电线路 光纤BRAGG光栅 倾角传感器 绝缘子风偏 

分 类 号：TM85[电气工程—高电压与绝缘技术]