Optical Voltage and Current Measuring System for Electric Power Systems

Kanoe, M.; Takahashi, Genji; Satô, Tadashi; Higaki, M.; Mori, E.; Okumura, Kohshi

doi:10.1109/mper.1986.5528230

Cited by 34 publications

(18 citation statements)

References 5 publications

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“…Subsequently, the saturation phenomenon may occur in the core, leading to the distortion of the currents in the secondary winding; which may further result in false responses occurring in current detection and protective systems. Considering all saturation phenomena are caused by the hysteresis of the core of the CT, some methods of improving the saturation problems were proposed in the past, including air-gap current transformers, linear couplers, and magnetooptical current transformers [3,4]. In actual applications, the practicalities and the drawbacks of these methods led to their unpopularity.…”

Section: Introductionmentioning

confidence: 99%

Design of a Novel Power Current Micro-Sensor for Traction Power Supply Using Two Hall ICs

Chen

Tsai

Chen

2009

2009 IEEE 70th Vehicular Technology Conference Fall

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This research applied the integrated circuit (IC) manufacturing technology to develop a new power current microsensor to replace CTs and save space in railway train sets. Two small pieces of IC chips are attached to a power cable to measure the current flowing in the cable. Measurement results show that the new power current micro-sensor can perform the same function of a CT without running into saturation problems no matter whether the cable is straight or not.Under this method, the two Hall voltages produced by the two Hall ICs will compensate for each other to raise the accuracies of the power current micro-sensors without cores in a non-straight conducting cable. According to the measuring framework developed by this study, based on LabVIEW, a series of waveforms generated by the newly designed power current micro-sensors are compared with those of traditional CTs and linear CTs. Satisfactory results show the feasibility of improving the power current micro-sensor with the new design.

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Section: Introductionmentioning

confidence: 99%

Design of a Novel Power Current Micro-Sensor for Traction Power Supply Using Two Hall ICs

Chen

Tsai

Chen

2009

2009 IEEE 70th Vehicular Technology Conference Fall

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“…2 Traditional metallic electromagnetic field (E-field) sensors are typically too large to embed into a device and their metallic components perturb the fields they are intended to measure. These deficiencies have been partially overcome by the development of optical devices that use dielectric structures, coupled with optical fiber.…”

Section: Introductionmentioning

confidence: 99%

Electric field sensor based on core-replaced optical D-fiber

et al. 2007

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This paper presents a means for creating optical fiber sensors that are capable of detecting electric fields. This novel E-field sensor is formed as part of a contiguous fiber resulting in a flexible and small cross-section device that could be embedded into electronic circuitry. The sensor is formed by partially etching out the core of a D-shaped optical fiber and depositing an electro-optic polymer. Using PMMA and DR1 for proof of concept, we demonstrate the operation of the first in-fiber hybrid waveguide electric field sensor with a sensitivity of less than 100 V/m at a frequency of 2.9 GHz. Sensors optimized for low loss (∼1dB) have an estimated E π of 222 MV/m. A sensor with an E π of 60 MV/m is also demonstrated with an insertion loss of 14.4 dB.

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“…(Meymeix P. and Chatrefor D (1988)) the Swedish ASEA Company and several .Japanese companies (Mutsui et al (1987). Kanoi et al (1986)). The potential of optical fibre based sensing systems for monitoring physical and chemical conditions in difficult environments such as those with explosion hazards or those susceptible to electromagnetic interference is now well established (e.g.…”

Section: Introductionmentioning

confidence: 99%

“…That optical fibre based sensing for electrical power systems is coming of age is reflected by the positive attitude of the French power generating organisation EDF. (Meymeix P. and Chatrefor D (1988)) the Swedish ASEA Company and several Japanese companies (Mutsui et al (1987), Kanoi et al (1986)). …”

Section: Introductionmentioning

confidence: 99%