塑壳断路器分断角速度非接触式检测方法及其应用
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摘要
提出了一种基于激光位移传感器非接触式测量塑壳断路器分断过程中动触头角位移、角速度的方法。首先建立一个以动触头杠转动支点为顶点,动触头杠闭合和分断状态所在位置为边的三角形;其次,通过激光位移传感器测量触头分断过程中的直线位移和直线速度,最后,利用所建立的三角形,基于余弦定理将直线位移和直线速度,转换成角位移角速度,实现了对塑壳断路器分断过程中转动变量的无损测量。基于本文所提出的方法,分别测量了NM1-630S-3300额定10A、16A、25A断路器在12倍额定电流下触头的分断的角位移、角速度及分断时间,可以发现不同分断容量断路器,分断角速度与分断时间均不同。容量较大时,触头转动的平均角速度较高。碰撞的角速度增大时,电弧的燃烧时间减小。通过研究断路器分断过程的动态特性,可以从试验的角度研究断路器分断性能,为断路器的优化设计提供评判依据。
A non-contact measurement method for angular rate and angular displacement of MCCB in breaking process is developed based on the laser displacement sensor. Firstly,a triangle is established based on the pivot point of moving contact arm as vertex,and the side of triangle is the location when contact arm is closed and broken. Then,the linear displacement and velocity in breaking process are measured by the laser displacement sensor. Finally,on the basis of cosine theorem,the linear displacement and rate are transformed into angular displacement and rate,respectively. So the nondestructive measurement of the rotational variable to MCCB can be realized. By using this method,the measurement is performed based on different type of MCCBs,rated at 10 A,16A,25 A. It is found that different capacity of MCCB has different angular rate and breaking-time. The average angular velocity increases with the increase of the capacity of MCCB. The stagnation time of arc decreases with the increase of collision angular rate. By studying the dynamic characteristics during the breaking process,the breaking performance of breaker can be studied from the perspective of test,thus providing the basis measurement results for the optimal design of MCCB.
A non-contact measurement method for angular rate and angular displacement of MCCB in breaking process is developed based on the laser displacement sensor. Firstly,a triangle is established based on the pivot point of moving contact arm as vertex,and the side of triangle is the location when contact arm is closed and broken. Then,the linear displacement and velocity in breaking process are measured by the laser displacement sensor. Finally,on the basis of cosine theorem,the linear displacement and rate are transformed into angular displacement and rate,respectively. So the nondestructive measurement of the rotational variable to MCCB can be realized. By using this method,the measurement is performed based on different type of MCCBs,rated at 10 A,16A,25 A. It is found that different capacity of MCCB has different angular rate and breaking-time. The average angular velocity increases with the increase of the capacity of MCCB. The stagnation time of arc decreases with the increase of collision angular rate. By studying the dynamic characteristics during the breaking process,the breaking performance of breaker can be studied from the perspective of test,thus providing the basis measurement results for the optimal design of MCCB.
引文
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[13]杨扩军,田书林,蒋俊,等.基于TIADC的20 GS/s高速数据采集系统[J].仪器仪表学报,2014,35(4):841-849.YANG K J,TIAN SH L,JIANG J,et al.20 GS/s high speed data acquisition system based on TIADC[J].Chinese Journal of Scientific Instrument,2014,35(4):841-849.
[14]颜思淼,万晓东.浅谈数据采集系统的同步[J].国外电子测量技术,2014,33(8):5-6.YAN S M,WAN X D.The discussion of synchronous to data acquisition system[J].Foreign Electronic Measurement Technology,2014,33(8):5-6.
[2]季良,陈德桂,刘颖异,等.利用电弧动态数学模型的低压断路器开断过程仿真分析[J].中国电机工程学报,2009(21):107-113.JI L,CHEN D G,LIU Y Y,et al.Simulation of the interruption process of low voltage circuit breaker using dynamic mathematic arc model[J].Proceedings of the CSEE,2009(21):107-113.
[3]ZELLER P R,RIDER W F.Arc structure,arc motion,and gas pressure between laterally enclosed arc runner[J].IEEE Trans.on Components and Packaging Technology,2001,24(3):337-341.
[4]徐元哲,何野,郭海涛,等.SF6断路器气体泄漏红外图像中散斑噪声的抑制算法[J].仪器仪表学报,2011,32(12):2669-2673.XU Y ZH,HE Y,GUO H T,et al.Speckle noise reduction algorithm for infrared image of gas leakage in SF6switcher[J].Chinese Journal of Scientific Instrument,2011,32(12):2669-2673.
[5]郑昕,许志红.低压串联电弧故障通用诊断方法的研究[J].电子测量与仪器学报,2014,28(9):991-997.ZHENG X,XU ZH H.Research on universal diagnostic for low-voltage series arc fault[J].Journal of Electronic Measurement and Instrument,2014,28(9):991-997.
[6]刘发英,苏秀苹,王禹博.角位移传感器在智能断路器机械特性测试中的应用[J].机床与液压,2013,12:23-27.LIU F Y,SU X P,WANG Y B.Application of angular displacement sensor to test mechanical characteristics of intelligent molded case circuit breaker[J].Hydromechatronics Engineering,2013,12:23-27.
[7]叶忻泉,赵荣祥,吴茂刚.塑壳断路器触头分断速度定量计算方法的研究[J].浙江大学学报:工学版,2006(3):448-453.YE X Q,ZHAO R X,WU M G.Study on breaking action characteristics of moulded case circuit-breaker contact[J].Journal of Zhejiang University:Engineering Science,2006(3):448-453.
[8]陈德桂,刘庆江,康艳.塑壳断路器操作机构断速度的影响因素[J].低压电器,2005(12):9-12.CHEN D G,LIU Q J,KANG Y.Effect of different factors to the operating velocity of molded case circuit breakers[J].Low Voltage Apparatus,2005(12):9-12.
[9]周亮,吴桂初,谢文彬.基于激光位移器的交流接触器动态测试与分析[J].温州大学学报:自然科学版,2013(3):32-37.ZHOU L,WU G CH,XIE W B.Dynamic testing and analysis of AC contactor based on laser displacement sensor[J].Journal of Wenzhou University:Science Edition,2013(3):32-37.
[10]叶子,吴桂初,舒亮.基于Lab VIEW的智能交流接触器动态性能测试系统[J].电子技术应用,2013(3):88-91.YE Z,WU G CH,SHU L.Dynamic characteristic testsystem for intelligent AC contactor based on Labview[J].Application of Electronic Technique,2013(3):32-37.
[11]行鸿彦,黄敏松.基于Lab VIEW虚拟仪器的心电信号采集系统的设计[J].电子测量与仪器学报,2008,22(5):107-111.XING H Y,HUANG M S.ECG acquisition system based on Lab VIEW virtual instrument[J].Journal of Electronic Measurement and Instrument,2008,22(5):107-111.
[12]陈曦,邓振淼,焦计平.多通道高速相参同步数据采集与存储系统设计[J].电子测量技术,2013,36(12):104-107.CHEN X,DENG ZH M,JIAO J P.Design of hig-speed multi-channel coherent synchronized data acquisition and storage system[J].Electronic Measurement Technology,2013,36(12):104-107.
[13]杨扩军,田书林,蒋俊,等.基于TIADC的20 GS/s高速数据采集系统[J].仪器仪表学报,2014,35(4):841-849.YANG K J,TIAN SH L,JIANG J,et al.20 GS/s high speed data acquisition system based on TIADC[J].Chinese Journal of Scientific Instrument,2014,35(4):841-849.
[14]颜思淼,万晓东.浅谈数据采集系统的同步[J].国外电子测量技术,2014,33(8):5-6.YAN S M,WAN X D.The discussion of synchronous to data acquisition system[J].Foreign Electronic Measurement Technology,2014,33(8):5-6.