Journal ArticleDOI
Development of optical instrument transformers
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In this article, the design, assembly, and testing results for prototypes of an optical current transformer (CT) and a voltage-dividing-type voltage transformer (PD) were described.Abstract:
The authors describe the design(, assembly(, and testing results for prototypes of an optical current transformer (CT) and a voltage-dividing-type voltage transformer (PD) The optical CT and PD were developed to be applicable to three-phase enclosed-type 300 kV gas-insulated switchgear (GIS) and air-insulated 168 kV substation systems Test results for the newly developed optical CT and PD showed that their basic properties conform with JEC 1201, the Japanese standard for electric-power instrument transformers >read more
Citations
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Journal ArticleDOI
Pockels high-voltage measurement system
TL;DR: In this paper, a new optical high voltage measurement technique for applying to high voltage levels up to 400 kV in a wide bandwidth between DC to 30 MHz is developed, where a prototype of the optical voltage transformer is assembled using Pockels crystals in a multisegmented arrangement, a super luminescent diode (SLD) light source and a special optical fiber link.
Optical Current Transducers for Power Systems: A Review
TL;DR: In this paper, the authors present a review of the optical measurement of current and discuss the special problems posed by calibration of this kind of instrument, as well as a discussion of interfacing to an optical transducer.
Journal ArticleDOI
Directly High-Voltage Measuring System Based on Pockels Effect
Akiko Kumada,Kunihiko Hidaka +1 more
TL;DR: In this paper, a two-wavelength dual laser system is introduced to expand the measured voltage up to the least common multiple of Vπ for each light, and measured results for dc, ac, lightning impulse, and step voltages by the system are compared with the predicted values.
Journal ArticleDOI
Optical High-Voltage Sensor Based on Fiber Bragg Grating and PZT Piezoelectric Ceramics
TL;DR: This paper relates to the development of a high-voltage sensor system using a PZT piezoelectric crystal as a transducer and a fiber Bragg grating as a sensor for an optical VT for a 13-kV class.
Journal ArticleDOI
Experimental Comparison of Conventional and Optical Current Transformers
Sadik Kucuksari,G.G. Karady +1 more
TL;DR: In this paper, the performance of optical current transformers (OCTs) was compared with conventional CTs in a laboratory and field records were obtained and evaluated to verify that OCT systems can replace conventional instrument transformers.
References
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Journal ArticleDOI
Optical Voltage and Current Measuring System for Electric Power Systems
TL;DR: In this article, an optical voltage and current measuring system based on the electrooptic effect in bismuth germanium oxide Bi4Ge3O12 and magneto-optic effects of borosilicate crown glass for the purpose of utilization in electric power systems was developed.
Proceedings ArticleDOI
Field Test of Fiber-Optic Voltage and Current Sensors Applied to Gas Insulated Substation
TL;DR: In this article, the fiber-optic voltage and current sensors applied for 84kV three phase type gas insulated substation (GIS) were tested in order to see the advantages of these sensors practically in adverse field condition.