Research and Characterization of All-Fiber Current Transformer System and Transmission Characteristics of Optical Fiber Devices
Citation
Keywords
- All-fiber optic current transformer (AFOCT)
- Faraday effect/rotation
- Current measurement
- DC transmission line
- Optical fiber devices
- Transmission characteristics
- Birefringence (linear, circular)
- Jones matrix
- System response
- Injection current measurement accuracy
- Smart grid/current swapping stations
- System abnormality/failure
- Analysis methods
- Optical components/devices
- Polarization (polarized light, polarization plane)
- Phase modulation
- Optical CT
Brief
This research investigates and characterizes an all-fiber optic current transformer (AFOCT) system and the transmission characteristics of its optical fiber devices, analyzing factors like birefringence and exploring mechanisms for different system responses.
Summary
This research dives deep into all-fiber optic current transformers (AFOCTs) used for measuring current in DC lines, focusing on how the transmission of light through the optical fibers and components – especially – affects the accuracy of current measurements. The study uses and explores ways to analyze errors, calibrate the system, and understand different system responses by adjusting polarizer direction and phase modulation. It highlights the significant impact of sensing fiber linear birefringence and the potential of circular birefringence to mitigate it.
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