The Research and Design of Electronic Current Transformer Based on PCB Planar-Type of Air Core Coil

2012 ◽  
Author(s):  
Yun-fei Zhang ◽  
You-qing Zhou ◽  
Xing Yang ◽  
Hai-bo Hu
Keyword(s):  
Current Transformer ◽  
Electronic Current Transformer ◽  
Air Core ◽  
Electronic Current ◽  
Research And Design

A Novel Electronic Current Transformer for High Voltage Systems

2012 ◽  
Vol 588-589 ◽  
pp. 558-562
Author(s):  
Tao Song
Keyword(s):  
Optical Power ◽  
Power Source ◽  
Current Transformer ◽  
Electrical Signal ◽  
Processing Unit ◽  
Electronic Current Transformer ◽  
Air Core ◽  
Electronic Current ◽  
Ground Potential ◽  
Signal Processing Unit

This paper illustrates a novel electronic current transformer (ECT) with a power source at ground potential. Employ the insulation structure of the traditional transformer insulated by SF6, the sensing unit with an air-core coil for measurement and protection transmits the electrical signal to the signal processing unit at the ground potential. Then the optical power source could be abandoned and the reliability is effectively enhanced. Utilizing mathematical models, designations and emulations have been done to compute the influence of the ambient temperature. Tests have been done and the experimental results show that this ECT meets the requirement of the 0.2s class for measurement and 5PTE for protection in IEC60044-8 respectively.

DESIGN AND TEST OF A NEW HIGH-CURRENT ELECTRONIC CURRENT TRANSFORMER WITH A ROGOWSKI COIL

2014 ◽  
Vol 21 (1) ◽  
pp. 121-132 ◽  
Author(s):  
Ming Zhang ◽  
Kaicheng Li ◽  
Shunfan He ◽  
Jun Wang
Keyword(s):  
Dynamic Range ◽  
Partial Evaluation ◽  
Current Transformer ◽  
Rogowski Coil ◽  
High Current ◽  
Current Transformers ◽  
Electronic Current Transformer ◽  
Electronic Current ◽  
Electro Magnetic ◽  
Electronic Current Transformers

Abstract This paper describes the design and test of a new high-current electronic current transformer based on a Rogowski coil. For better performances, electronic current transformers are used to replace conventional electro-magnetic inductive current transformers based on ferromagnetic cores and windings to measure high-current on the high voltage distribution grids. The design of a new high-current electronic current transformer is described in this paper. The principal schemes of the prototype and partial evaluation results are presented. Through relative tests it is known that the prototype has a wide dynamic range and frequency band, and it can allow high accuracy measurements.

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