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光电集成电场传感器在电场测量领域发挥着日益重要的作用,研究其介入对待测电场的影响对提高测量结果的准确度具有重要意义。搭建了研究光电集成电场传感器介入测量的实验系统,利用该系统对高压领域的4种典型电极(板–板电极,球–板电极,线–板电极和棒–板电极)进行了实验研究,并建立模型、进行仿真计算。实验仿真结果均表明:当传感器中心与待测电极表面的距离d大于3 cm时,测量值相对于计算值的误差小于±3%;随着d的减小,测量误差将迅速增加。对于此类型传感器,管壳及晶体介电常数较大是影响测量误差的主要因素。
Photoelectric integrated electric field sensors play an increasingly important role in the field of electric field measurement. It is of great significance to study the influence of their intervention on the electric field to be measured in order to improve the accuracy of the measurement results. An experimental system to study the interferential measurement of photoelectric integrated electric field sensor was set up. By using this system, four kinds of typical electrodes (plate - plate electrode, ball - plate electrode, wire - plate electrode and rod - plate electrode) And establish a model for simulation. The experimental results show that when the distance d between the sensor center and the surface of the electrode to be measured is more than 3 cm, the error of the measured value with respect to the calculated value is less than ± 3%. As the d decreases, the measurement error will increase rapidly. For this type of sensor, the large shell and crystal dielectric constant is the main factor affecting the measurement error.