Potential Distribution on the Stress Grading System of High-Voltage Rotating Machines -I. Measuring System-
Potential Distribution on the Stress Grading System of High-Voltage Rotating Machines -I. Measuring System-
复制标题
高压旋转电机应力分级系统的电位分布-I．
DOI：
10.1109/tdei.2015.005581
复制
发表时间：
2015
影响因子：
3.1
通讯作者：
T.Yoshimitsu
中科院分区：
文献类型：
--
作者：
A. Kumada;T. Nakamura;K. Hidaka;Y. Tsuboi;T.Yoshimitsu
利用普克尔斯传感器研制了一套表面电位测量系统，用于测量成型绕制电机线圈应力分级系统的电位分布。将Pockels BGO晶体定位在SG正上方（<1 mm），并且通过使用BGO晶体的Pockels效应来测量邻近SG的BGO晶体的表面上的电容感应电压。该传感系统适用于从0.001 Hz到100 MHz的宽频率范围内的表面电位测量。讨论了用反卷积增强后的测量系统的空间分辨率，其结果是测量系统的-3dB空间频率为0.22cycle/mm，这意味着测量系统的空间分辨率在4 mm范围内。
A surface potential measuring system has been developed utilizing a Pockels sensor to measure the potential distribution of the stress grading (SG) system of form wound motor coils. A Pockels BGO crystal is positioned just above (<1 mm) the SG, and the capacitively-induced voltage on the surface of the BGO crystal adjacent to the SG is measured by using Pockels effect of the BGO crystal. The sensing system is applicable to surface potential measurement over wide frequency region from 0.001 Hz to 100 MHz. The spatial resolution of the measuring system after enhancement through deconvolution is discussed with the result that the -3 dB spatial frequency of the measuring system is 0.22 cycle/mm which implies a resolution in the range of 4 mm.