基于矩形窗时域滤波算法的热导检测系统设计与应用
|
摘要
变压器油中溶解气体在线监测的关键是气体检测的传感器技术,如何准确测量、分析油中二氧化碳气体的含量是这一技术的难点。为解决这一难题,设计了一种基于矩形窗时域滤波算法的热导检测系统。该系统采用新型热导传感器TCS208F,针对其输出信号小,采集分析难度大的问题,采用模拟滤波和数字滤波相结合的方法,完成热导检测系统的软硬件优化设计,实现二氧化碳气体微弱信号的采集与分析。该方法有效地抑制了各种类型的噪声干扰,提高了系统测量的精度与灵敏度,实现了微量气体浓度的准确测量,克服了传统气体热导检测的缺点。
The key of on-line monitoring of dissolved gas in transformer oil is the sensor technology of gas detection, in which how to accurately measure and analyze the content of carbon dioxide in oil is the technical difficulties. To solve this problem, this paper designs a thermal conductivity detection system based on rectangular window time-domain filtering algorithm. The system uses a new thermal conductivity sensor TCS208 F, utilizes the combined method of analog and digital filtering for its small output signal and difficult issues in signal acquisition and analysis. Finally, this paper completes the optimum design of hardware and software of thermal conductivity detector system, realizes the collection and analysis of weak signal of carbon dioxide gas. This method effectively suppresses the noise of various types, improves the accuracy and sensitivity of system measurement, achieves the accurate measurement of trace gas concentrations, and overcomes the shortcomings of traditional gas thermal conductivity detection.
The key of on-line monitoring of dissolved gas in transformer oil is the sensor technology of gas detection, in which how to accurately measure and analyze the content of carbon dioxide in oil is the technical difficulties. To solve this problem, this paper designs a thermal conductivity detection system based on rectangular window time-domain filtering algorithm. The system uses a new thermal conductivity sensor TCS208 F, utilizes the combined method of analog and digital filtering for its small output signal and difficult issues in signal acquisition and analysis. Finally, this paper completes the optimum design of hardware and software of thermal conductivity detector system, realizes the collection and analysis of weak signal of carbon dioxide gas. This method effectively suppresses the noise of various types, improves the accuracy and sensitivity of system measurement, achieves the accurate measurement of trace gas concentrations, and overcomes the shortcomings of traditional gas thermal conductivity detection.
引文
[1]赵峰,李硕.基于DGA和改进型灰关联度模型的牵引变压器故障诊断[J].高压电器,2015,51(1):41-45.ZHAO Feng,LI Shuo.Fault diagnosis for traction transformer based on dga and improved grey correlation analysis model[J].High Voltage Apparatus,2015,51(1):41-45.
[2]胡然,罗维,王瑞珍,等.一台新投运500 k V变压器油色谱异常的缺陷诊断和处理[J].高压电器,2015,51(05):139-143.HU Ran,LUO Wei,WANG Ruizhen,et al.Defect diagnosis and treatment of a new 500 k V transformer with abnormal dga data[J].High Voltage Apparatus,2015,51(5):139-143.
[3]曾庆喜,王庆,王浩为.基于热导传感器的氢气浓度检测仪的设计[J].测控技术,2008,27(4):10-12.ZENG Qingxi,WANG Qing,WANG Haowei.Design of hydrogen concentration detector based on thermal conductivity sensor[J].Measurement&Control Technology,2008,27(4):10-12.
[4]黄为勇,童敏明,任子晖.采用热导传感器检测气体浓度的新方法研究[J].传感技术学报,2006(4):973-975.HUANG Weiyong,TONG Minming,REN Zihui.New method of gas concentration detection using thermal conductivity sensor[J].Chinese Journal of Sensors and Actuators,2006(4):973-975.
[5]马炳和,周保清,邓进军,等.MEMS微型热敏传感器的隔热结构及其性能分析[J].传感技术学报,2008,21(6):933-937.MA Binghe,ZHOU Baoqing,DENG Jinjun,et al.On heat insulation of micro thermal sensor using FEA[J].Chinese Journal of Sensors and Actuators,2008,21(6):933-937.
[6]李学东,余志伟,杨明忠.基于MEMS技术的微型传感器[J].仪表技术与传感器,2005(9):4-5,12.LI Xuedong,YU Zhiwei,YANG Mingzhong.Microsensors based on MEMS technology[J].Instrument Technique and Sensor,2005(9):4-5,12.
[7]冯洋,吴言荪,周平.热导传感器TCS208F及其信号调理电路研究[J].传感器与微系统,2009,28(9):70-72.FENG Yang,WU Yansun,ZHOU Ping.Study on thermal conductivity sensor TCS208 F and its signal conditioning circuit[J].Transducer and Microsystem Technologies,2009,28(9):70-72.
[8]刘殿素,吴言荪,欧勇.新型气体热导传感器及其应用设计[J].仪表技术与传感器,2007(7):5-6.LIU Diansu,WU Yansun,OU Yong.Applicable design of new type thermal conductivity sensor for gases[J].Instrument Technique and Sensor,2007(7):5-6.
[9]孙冬梅,刘林,徐海滨.基于微流量热导传感器的氢气浓度检测系统研究[J].控制工程,2011,18(4):505-508.SUN Dongmei,LIU Lin,XU Haibin.Hydrogen concentration test systems based on thermal conductivity sensor[J].Control Engineering of China,2011,18(4):505-508.
[10]WAGNER G R.TCS208F thermal conductivity sensor for gases[J].Sensors,Systems&Services,2004,5(3):1-7.
[11]钱江波,严晓哲,韩中合.用于液膜厚度测量的开式同轴腔传感器结构设计[J].热力发电,2015,44(3):99-103.QIAN Jiangbo,YAN Xiaozhe,HAN Zhonghe.Structural design of microwave coaxial resonant cavity sensor for liquid film thickness measurement[J].Thermal Power Generation,2015,44(3):99-103.
[12]梁长垠,张守权.热流量传感器温度补偿方法研究[J].传感器与微系统,2006,25(4):18-20.LIANG Changyin,ZHANG Shouquan.Research on temperature compensation method for thermal flow sensor[J].Transducer and Microsystem Technologies,2006,25(4):18-20.
[13]杨志勇,管伊春,严利民.一种热导式在线分析仪的温度控制方法[J].仪器仪表学报,2005,26(8):248-249.YANG Zhiyong,GUAN Yichun,YAN Limin.A temperature control method on thermal conductivity online analyzer[J].Chinese Journal of Scientific Instrument,2005,26(8):248-249.
[14]梅德冬,樊瑞,周斌.IEC61850模型信息的规则表达与校验研究[J].电力系统保护与控制,2015,43(3):131-136.MEI Dedong,FAN Rui,ZHOU Bin.Research on regular expressions and check of IEC 61850 model information[J].Power System Protection and Control,2015,43(3):131-136.
[15]张卫华,苑津莎,王杉,等.基于改良三比值法的变压器故障基本信度分配计算方法[J].电力系统保护与控制,2015,43(7):115-121.ZHANG Weihua,YUAN Jinsha,WANG Shan,et al.A calculation method for transformer fault basic probability assignment based on improved three-ratio method[J].Power System Protection and Control,2015,43(7):115-121.
[16]魏云冰,王东晖,韩立峰,等.一种基于MIA的油浸式变压器放电性故障定位新方法[J].电力系统保护与控制,2015,43(21):41-47.WEI Yunbing,WANG Donghui,HAN Lifeng,et al.A novel method for discharging fault diagnosis and location of oil-immersed power transformers based on MIA[J].Power System Protection and Control,2015,43(21):41-47.
[17]YAO Zhiqing,ZHANG Qun,CHEN Peng,et al.Research on fault diagnosis for MMC-HVDC systems[J].Protection and Control of Modern Power Systems,2016,1(1):79-85.
[18]翟瑞聪,谢善益,范颖,等.基于IEC 61850的在线监测装置通信仿真系统开发与应用[J].电力系统保护与控制,2016,44(8):137-141.ZHAI Ruicong,XIE Shanyi,FAN Ying,et al.Development and application of the communication simulation system for the online monitoring device based on IEC 61850[J].Power System Protection and Control,2016,44(8):137-141.
[19]赵靓,柴庆龙.基于分层模糊符号有向图法的故障诊断方法[J].热力发电,2015,44(11):26-31.ZHAO Liang,CHAI Qinglong,A fault diagnosis approach based on hierarchical fuzzy signed directed graph model[J].Thermal Power Generation,2015,44(11):26-31.
[20]任梦祎,焦嵩鸣.改进型非线性状态估计的制粉系统故障诊断[J].热力发电,2015,44(12):87-92.REN Mengyi,JIAO Songming.Coal milling system fault diagnosis based on improved NSET[J].Thermal Power Generation,2015,44(12):87-92.
[2]胡然,罗维,王瑞珍,等.一台新投运500 k V变压器油色谱异常的缺陷诊断和处理[J].高压电器,2015,51(05):139-143.HU Ran,LUO Wei,WANG Ruizhen,et al.Defect diagnosis and treatment of a new 500 k V transformer with abnormal dga data[J].High Voltage Apparatus,2015,51(5):139-143.
[3]曾庆喜,王庆,王浩为.基于热导传感器的氢气浓度检测仪的设计[J].测控技术,2008,27(4):10-12.ZENG Qingxi,WANG Qing,WANG Haowei.Design of hydrogen concentration detector based on thermal conductivity sensor[J].Measurement&Control Technology,2008,27(4):10-12.
[4]黄为勇,童敏明,任子晖.采用热导传感器检测气体浓度的新方法研究[J].传感技术学报,2006(4):973-975.HUANG Weiyong,TONG Minming,REN Zihui.New method of gas concentration detection using thermal conductivity sensor[J].Chinese Journal of Sensors and Actuators,2006(4):973-975.
[5]马炳和,周保清,邓进军,等.MEMS微型热敏传感器的隔热结构及其性能分析[J].传感技术学报,2008,21(6):933-937.MA Binghe,ZHOU Baoqing,DENG Jinjun,et al.On heat insulation of micro thermal sensor using FEA[J].Chinese Journal of Sensors and Actuators,2008,21(6):933-937.
[6]李学东,余志伟,杨明忠.基于MEMS技术的微型传感器[J].仪表技术与传感器,2005(9):4-5,12.LI Xuedong,YU Zhiwei,YANG Mingzhong.Microsensors based on MEMS technology[J].Instrument Technique and Sensor,2005(9):4-5,12.
[7]冯洋,吴言荪,周平.热导传感器TCS208F及其信号调理电路研究[J].传感器与微系统,2009,28(9):70-72.FENG Yang,WU Yansun,ZHOU Ping.Study on thermal conductivity sensor TCS208 F and its signal conditioning circuit[J].Transducer and Microsystem Technologies,2009,28(9):70-72.
[8]刘殿素,吴言荪,欧勇.新型气体热导传感器及其应用设计[J].仪表技术与传感器,2007(7):5-6.LIU Diansu,WU Yansun,OU Yong.Applicable design of new type thermal conductivity sensor for gases[J].Instrument Technique and Sensor,2007(7):5-6.
[9]孙冬梅,刘林,徐海滨.基于微流量热导传感器的氢气浓度检测系统研究[J].控制工程,2011,18(4):505-508.SUN Dongmei,LIU Lin,XU Haibin.Hydrogen concentration test systems based on thermal conductivity sensor[J].Control Engineering of China,2011,18(4):505-508.
[10]WAGNER G R.TCS208F thermal conductivity sensor for gases[J].Sensors,Systems&Services,2004,5(3):1-7.
[11]钱江波,严晓哲,韩中合.用于液膜厚度测量的开式同轴腔传感器结构设计[J].热力发电,2015,44(3):99-103.QIAN Jiangbo,YAN Xiaozhe,HAN Zhonghe.Structural design of microwave coaxial resonant cavity sensor for liquid film thickness measurement[J].Thermal Power Generation,2015,44(3):99-103.
[12]梁长垠,张守权.热流量传感器温度补偿方法研究[J].传感器与微系统,2006,25(4):18-20.LIANG Changyin,ZHANG Shouquan.Research on temperature compensation method for thermal flow sensor[J].Transducer and Microsystem Technologies,2006,25(4):18-20.
[13]杨志勇,管伊春,严利民.一种热导式在线分析仪的温度控制方法[J].仪器仪表学报,2005,26(8):248-249.YANG Zhiyong,GUAN Yichun,YAN Limin.A temperature control method on thermal conductivity online analyzer[J].Chinese Journal of Scientific Instrument,2005,26(8):248-249.
[14]梅德冬,樊瑞,周斌.IEC61850模型信息的规则表达与校验研究[J].电力系统保护与控制,2015,43(3):131-136.MEI Dedong,FAN Rui,ZHOU Bin.Research on regular expressions and check of IEC 61850 model information[J].Power System Protection and Control,2015,43(3):131-136.
[15]张卫华,苑津莎,王杉,等.基于改良三比值法的变压器故障基本信度分配计算方法[J].电力系统保护与控制,2015,43(7):115-121.ZHANG Weihua,YUAN Jinsha,WANG Shan,et al.A calculation method for transformer fault basic probability assignment based on improved three-ratio method[J].Power System Protection and Control,2015,43(7):115-121.
[16]魏云冰,王东晖,韩立峰,等.一种基于MIA的油浸式变压器放电性故障定位新方法[J].电力系统保护与控制,2015,43(21):41-47.WEI Yunbing,WANG Donghui,HAN Lifeng,et al.A novel method for discharging fault diagnosis and location of oil-immersed power transformers based on MIA[J].Power System Protection and Control,2015,43(21):41-47.
[17]YAO Zhiqing,ZHANG Qun,CHEN Peng,et al.Research on fault diagnosis for MMC-HVDC systems[J].Protection and Control of Modern Power Systems,2016,1(1):79-85.
[18]翟瑞聪,谢善益,范颖,等.基于IEC 61850的在线监测装置通信仿真系统开发与应用[J].电力系统保护与控制,2016,44(8):137-141.ZHAI Ruicong,XIE Shanyi,FAN Ying,et al.Development and application of the communication simulation system for the online monitoring device based on IEC 61850[J].Power System Protection and Control,2016,44(8):137-141.
[19]赵靓,柴庆龙.基于分层模糊符号有向图法的故障诊断方法[J].热力发电,2015,44(11):26-31.ZHAO Liang,CHAI Qinglong,A fault diagnosis approach based on hierarchical fuzzy signed directed graph model[J].Thermal Power Generation,2015,44(11):26-31.
[20]任梦祎,焦嵩鸣.改进型非线性状态估计的制粉系统故障诊断[J].热力发电,2015,44(12):87-92.REN Mengyi,JIAO Songming.Coal milling system fault diagnosis based on improved NSET[J].Thermal Power Generation,2015,44(12):87-92.