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A New Broadband Microcurrent Transducer for Insulator Leakage Current Monitoring System

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6 Author(s)
Weigen Chen ; Chongqing Univ., Chongqing ; Chenguo Yao ; Pan Chen ; Caixin Sun
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In this paper, a type of high bandwidth microcurrent transducer designed for online monitoring of an insulator is described. According to the equivalent circuit model, the effects of transducer winding number, stray capacitance, and loading resistance on passbandwidth and sensitivity are discussed. The academic lower limit of the transducer is nearly zero and the upper limit is infinity, which are proven by the analysis of the electronic circuit and the simulation by saber. The test of the current transducer shows that the transducer can be used in most high-voltage insulations systems with broad passbandwidth, high linearity, high sensitivity, and noncontact.

Published in:

Power Delivery, IEEE Transactions on  (Volume:23 ,  Issue: 1 )

Date of Publication:

Jan. 2008

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