电气设备绝缘在线监测宽频带电流传感器研究

描述了改进的用于监测高压设备的电流传感器，根据传感器的等效电路模型，针对在线监测的穿心式传感器，研究了如何改进其频率性能，提高频率带宽的方法。通过传感器电子电路的分析和仿真发现，该传感器具有通频带宽、线性度好、灵敏度高等优点，为高压绝缘在线监测系统提供了可能性。

An improved current transducer designed for online monitoring of HV equipment is described. According to the e- quivalent circuit model of the transducer, the methods how to improve the performances of the straight -through transducer and enhance the frequency bandwidth are discussed. The lower frequency limit of the transducer is nearly zero and the upper limit is infinite, which are proved by the analysis of electronic circuit and the simulation. The test of current transducer shows that the transducer provides the possibility for HV insulation online monitoring system with broad bandwidth, high linearity and high sensitivity.