Optimization design of sensing coil of all-fiber optical current transformer

2012 ◽  
Author(s):  
Song Cheng ◽  
Guoqing Zhang ◽  
Wenbin Yu ◽  
Yan Shen ◽  
Yinan Zhao ◽  
...  
Keyword(s):  
Optimization Design ◽  
Current Transformer ◽  
Fiber Optical

Noise analysis and SNR optimization design of fiber optical current transformers

2020 ◽  
Author(s):  
Hu Bei ◽  
Xiao Hao ◽  
Xiao JinGen ◽  
Lai JiaCang ◽  
Li Jianguang ◽  
...  
Keyword(s):  
Optimization Design ◽  
Noise Analysis ◽  
Current Transformers ◽  
Fiber Optical

scholarly journals Research on error mechanism analysis and compensation method of Fiber-Optical Current Transformer

2019 ◽  
Vol 1311 ◽  
pp. 012012
Author(s):  
Dengyun Li ◽  
Min Lei ◽  
Dandan Zhang ◽  
Shi Mo ◽  
Yongfeng Chai
Keyword(s):  
Current Transformer ◽  
Compensation Method ◽  
Mechanism Analysis ◽  
Fiber Optical

Analysis method for the operation health of all-fiber optical current transformer

2020 ◽  
Author(s):  
Jieqing Deng ◽  
Xiaozheng Tang ◽  
Xu Wei ◽  
Chunlei Yu ◽  
Xiang Zhang ◽  
...  
Keyword(s):  
Current Transformer ◽  
Analysis Method ◽  
Fiber Optical

scholarly journals Fault Mechanism of Fiber Optical Current Transformer Based on Signal Processing Method

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Fubin Pang ◽  
Qiang Huang ◽  
Yu Liu ◽  
Peng Li ◽  
Xiangping Kong ◽  
...  
Keyword(s):  
Signal Processing ◽  
Second Harmonic ◽  
Harmonic Component ◽  
Current Transformer ◽  
Processing Method ◽  
Fault Analysis ◽  
Measured Current ◽  
Signal Processing Method ◽  
Fiber Optical ◽  
Fault Mechanism

The fiber optical current transformer (FOCT) with sine wave modulation has been widely used in the DC transmission project, while its fault rate is much higher than that of an electromagnetic current transformer, which seriously threatens the safe operation of power grid. In order to investigate the fault mechanism of FOCT, the output signal model of the FOCT photodetector is established, and its basic methods of modulation and demodulation are analyzed to explore the influencing factors of the signal processing method used in the calculation of measured current. It is found that the reduction of the second harmonic component in the photodetector output is the root cause of FOCT fault, and the optical path, modulation signal amplitude, and measured current are important factors affecting the second harmonic component. The influencing law of three factors on the second harmonic component is calculated by simulation and the characteristic differences between them are given. Finally, the fault simulation test of FOCT light intensity and a modulation circuit were carried out in the laboratory, and the results verify the correctness of theoretical analysis. The research in this paper provides reference for fault analysis and reliability improvement of FOCT.

scholarly journals Design and applicability analysis of independent double acquisition circuit of all-fiber optical current transformer

2019 ◽  
Vol 2 (6) ◽  
pp. 531-540
Author(s):  
Songlin Gu ◽  
Liu Han ◽  
Dongwei Liu ◽  
Wenbin Yu ◽  
Zhihong Xiao ◽  
...  
Keyword(s):  
Current Transformer ◽  
Fiber Optical
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