Accurate optical fiber current transducer for high-voltage direct current (HVDC) transmission. Issue 6 (2nd November 2022)

• Record Type: Journal Article
• Authors: Liu, Haifeng; Guo, Hongjie; Tan, Manqing; Li, Qin; Meng, Xiangqiang; Yang, Xu
• Is Part Of: Instrumentation science & technology. Volume 50:Issue 6(2022)
• Page Start: 604
• Page End: 615
• Publication Date: 2022-11-02
• Subjects: Optical fiber -- Faraday effect -- current measurement -- high-voltage direct current transmission -- harmonic current; Scientific apparatus and instruments -- Periodicals; 681.2
• DOI: 10.1080/10739149.2022.2053152
• Languages: English
• ISSNs: 1073-9149

Abstract

Abstract: Accurate optical fiber current transducer based on the Faraday magneto-optical effect is described for high voltage direct current (HVDC) transmission. The transducer may be used to measure DC and high-order harmonic currents in a ± 800 kV DC transmission field. The performance characteristics of sensitivity, non-linearity, temperature stability, and harmonic accuracy of the prototype were investigated. The results show that the scale factor error in the −40 °C to 70 °C range is below ±0.2%. The presented optical fiber current transducer has potential applications for HVDC detection fields, such as for a polarity bus and a converter valve bridge arm.