基于红外的GIS内部导体温度检测技术研究
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摘要
为预防气体绝缘金属封闭开关设备(GIS)触头过热缺陷,解决传统测温技术无法实现GIS设备内部触头温度准确检测的难题,提高GIS设备内部触头温度的测量精度,提出一种基于红外热成像GIS内部导体温度检测技术。通过不同光程和气压条件下SF_6吸收率试验,对影响红外测温精度的光程和SF_6气体压力进行分析,得到光程、气体压力与温度修正值的关系,并计算得到温度补偿算法;将该温度补偿算法应用在红外测温装置中,能够根据被测物的光程和SF_6气体压力准确测得GIS内部导体实际温度。最终的试验结果显示,该红外测温仪在加入补偿算法后能够较准确地测量出GIS设备气室内触头的实际温度。
In order to prevent the over heating defects of gas-insulated metal-enclosed switchgear(GIS) contacts and solve the problem of unable to measure the temperature of internal conductor in GIS by traditional temperature measurement, high-accuracy temperature detection of internal conductor in GIS based on infrared thermal imaging is proposed. Through a series of tests, the depth analysis of the optical path factors and the pressure of the SF_6 gas which have an impact on the accuracy of infrared temperature, the concrete relationship among the optical path factors, the pressure of the SF_6 gas and the measurement accuracy is gained. So is the compensation formula. According to the distance of the measured objects and the pressure of SF_6, a set of algorithm improving the measurement accuracy of infrared radiation thermometer to obtain the actual temperature of the contact measured is designed. It can combine with exact temperature compensation calculated by compensation formula. The final result of test shows that the infrared radiation thermometer with compensation algorithm can measure the temperature of the contacts in GIS more accurately.
In order to prevent the over heating defects of gas-insulated metal-enclosed switchgear(GIS) contacts and solve the problem of unable to measure the temperature of internal conductor in GIS by traditional temperature measurement, high-accuracy temperature detection of internal conductor in GIS based on infrared thermal imaging is proposed. Through a series of tests, the depth analysis of the optical path factors and the pressure of the SF_6 gas which have an impact on the accuracy of infrared temperature, the concrete relationship among the optical path factors, the pressure of the SF_6 gas and the measurement accuracy is gained. So is the compensation formula. According to the distance of the measured objects and the pressure of SF_6, a set of algorithm improving the measurement accuracy of infrared radiation thermometer to obtain the actual temperature of the contact measured is designed. It can combine with exact temperature compensation calculated by compensation formula. The final result of test shows that the infrared radiation thermometer with compensation algorithm can measure the temperature of the contacts in GIS more accurately.
引文
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[14]陈强,李庆民.基于多点分布式光纤光栅的GIS隔离开关触头温度在线监测技术[J].电工技术学报,2015,30(12):298-306.CHEN Qiang,LI Qingmin.Based on the GIS disconnector contact temperature monitoring technique multipoint distribution fiber grating[J].Electrical Technology,2015,30(12):298-306.
[15]杨景刚,刘媛,高山,等.高压开关机械故障诊断技术[J].江苏电机工程,2016,35(2):1-6.YANG Jinggang,LIU Yuan,GAO Shan,et al.Review on mechanical fault diagnosis of high-voltaga circuit breakers[J].Jiangsu Electrical Engineering,2016,35(2):1-6.
[16]张扬.一例红外测温技术诊断220 k V隔离开关过热缺陷[J].江苏电机工程,2012,31(5):21-22.ZHANG Yang.An example of diagnosing overheating defects in 220 k V disconnector by infrared thermometric tecniques[J].Jiangsu Electrical Engineering,2012,31(5):21-22.
[17]赵科,李洪涛,杨景刚.特高压GIS集中监造工作的若干思考[J].江苏电机工程,2016,35(2):69-71.ZHAO Ke,LI Hongtao,YANG Jinggang.Discussions on the gentralized supervision of UHV GIS[J].Jiangsu Electrical Engineering,2016,35(2):69-71.
[2]马继先,杨青,郭亮.影响电力设备红外检测准确性因素的分析研究[J].华北电力技术,2012(8):55-60.MA Jixian,YANG Qing,LIANG Guo.Research on promoting the accuracy of electrical equipment diagnosing with infrared detection[J].North China Electric Power,2012(8):55-60.
[3]张乔根,文韬,赵军平,等.大容量GIS现场冲击试验问题探讨[J].广东电力,2018,31(8):37-43.ZHANG Qiaogen,WEN Tao,ZHAO Junping,et al.Discussion on problems of on-site impulse test for GIS with large capacity[J].Guangdong Electric Power,2018,31(8):37-43.
[4]李德刚.红外诊断技术在电气设备状态检测中的研究与应用[D].济南:山东大学,2010.LI Degang.Research and application on the infrared diagnostics of electrical equipment testing[D].Jinan:Shandong University,2010.
[5]武胜斌,郑研,陈志斌.基于红外测温技术的GIS导体温度在线监测的方案[J].高压电器,2009,45(4):100-102.WU Shengbin,ZHENG Yan,CHEN Zhibin.The scheme of online monitoring of GIS conductor temperature based on infrared temperature measurement technology[J].High-voltage Electrical,2009,45(4):100-102.
[6]缪金,王艳华.GIS组合电器典型故障分类和全周期维护策略研究[J].陕西电力,2017,45(2):78-81.MIAO Jin,WANG Yanhua.Typical fault classification of GIS equipment and life cycle management strategy[J].Shaanxi Electric Power,2017,45(2):78-81.
[7]金虎,彭在兴,王颂,等.GIS触头过热故障实验及外壳红外热像分布特征研究[J].智慧电力,2017,45(11):37-41.JIN Hu,PENG Zaixing,WANG Song,et al.Study on overheat experiment of GIS contact and infrared thermal image distribution on its Shell[J].Smart Power,2017,45(11):37-41.
[8]金力军,胡青,邱国海.GIS电晕放电监测[J].高电压技术,2005,31(3):25-27.JIN Lijun,HU Qing,QIU Guohai.GIS corona discharge monitoring[J].High Voltage Technology,2005,31(3):25-27.
[9]刘渝根,丁伯剑,袁涛.山区35 k V电网中性点新型运行方式研究[J].高电压技术,2006,32(1):32-34.LIU Yugen,DING Bojian,YUAN Tao.Study on the new operation mode of neutral point in 35 k V power grid in mountain area[J].High Voltage Engineering,2006,32(1):32-34.
[10]NIEWCZAS P,CRUDEN A,MICHIE W C,et al.Error analysis of an optical current transducer operating with a digital signal processing system[J].IEEE Transactions on Instrumentation and Measurement,2000,49(6):60-65.
[11]戴伏生,毛兴鹏,王好贤.基础电子电路设计与实践[M].北京:国防工业出版社,2002.DAI Fusheng,MAO Xingpeng,WANG Haoxian.Basic electronic circuit design and practice[M].Beijing:National Defense Industry Press,2002.
[12]STEINHAUSER F.New challenges with substations utilizing communication networks[C]∥Power Technology Conference Proceedings,Bologna,2003:225-229.
[13]丛浩熹,李庆民.基于红外传感的GIS隔离开关触头温度在线监测技术研究[J].电力自动化设备,2014,34(3):144-148.CONG Haoxi,LI Qingmi.Research on on-line monitoring technology of GIS disconnector contact temperature based on infrared sensing[J].Power Automation Equipment,2014,34(3):144-148.
[14]陈强,李庆民.基于多点分布式光纤光栅的GIS隔离开关触头温度在线监测技术[J].电工技术学报,2015,30(12):298-306.CHEN Qiang,LI Qingmin.Based on the GIS disconnector contact temperature monitoring technique multipoint distribution fiber grating[J].Electrical Technology,2015,30(12):298-306.
[15]杨景刚,刘媛,高山,等.高压开关机械故障诊断技术[J].江苏电机工程,2016,35(2):1-6.YANG Jinggang,LIU Yuan,GAO Shan,et al.Review on mechanical fault diagnosis of high-voltaga circuit breakers[J].Jiangsu Electrical Engineering,2016,35(2):1-6.
[16]张扬.一例红外测温技术诊断220 k V隔离开关过热缺陷[J].江苏电机工程,2012,31(5):21-22.ZHANG Yang.An example of diagnosing overheating defects in 220 k V disconnector by infrared thermometric tecniques[J].Jiangsu Electrical Engineering,2012,31(5):21-22.
[17]赵科,李洪涛,杨景刚.特高压GIS集中监造工作的若干思考[J].江苏电机工程,2016,35(2):69-71.ZHAO Ke,LI Hongtao,YANG Jinggang.Discussions on the gentralized supervision of UHV GIS[J].Jiangsu Electrical Engineering,2016,35(2):69-71.