Research of DC Current Transformer Based on Optical Fiber Thermometry

Jia, Danping; Zhuo, Yuan; Lin, Wei; San, Hongli

doi:10.1166/jno.2012.1232

Cited by 6 publications

(3 citation statements)

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“…Thus DC large current measurement technology has become one of current research focus. We have proposed a measurement scheme of thin film resistor current sensor using the fast response performance of thin film resistor [5], as shown in Fig. 1.The program mainly consists of three parts: DC shunt, thin film resistors and a revamped optical fiber thermometer.…”

Section: The Application Of the Thin Film Resistor Used As A Current ...mentioning

confidence: 99%

The Application and Dynamic Temperature Test Methods of Micro Thin Film Resistor Sensor

Jia

Zhuo

2013

AMR

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Based on the rapid response advantages and test problems of the thin film resistor, the analysis and research on two aspects are focused: First, the thin film resistor is used as a current sensor which is applied in high-voltage DC transformer. The structure and performance of the thin film resistor are analyzed and simulated. Second, the dynamic characteristics of the thin film resistor are tested by indirect temperature measurement method. The problem of current rapid temperature measurement is solved. The dynamic temperature characteristic curve of the thin film resistor is analyzed by using multi-exponential spectral analysis method. The thermal characteristics of the fine structure for the thin film resistor are described by spectral characteristics. Moreover, more test information of the fine structure from comprehensive test results is separated to guide the improvement of the thin film resistor structure.

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Section: The Application Of the Thin Film Resistor Used As A Current ...mentioning

confidence: 99%

The Application and Dynamic Temperature Test Methods of Micro Thin Film Resistor Sensor

Jia

Zhuo

2013

AMR

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“…Fluorescent optical fiber temperature measurements are highly accurate, can be performed in real time, and are not easily affected by electromagnetic interference. However, optical fibers can easily fold and break and cannot resist high temperatures; thus, the equipment needs to be arranged in advance before use, and there are different relevant arrangement standards [8]. It is difficult to promote the application of a large area of multi-volume power equipment.…”

Section: Introductionmentioning

confidence: 99%

The Adhesion Characteristics and Aging Performance of Reversible Color-Changing Coatings for Self-Detection of Temperature by Power Equipment

Liu,

Wang,

Dai

et al. 2024

Processes

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In order to detect abnormal heat generation in time, a reversible color-changing coating temperature measurement method is proposed for self-detection of temperature by power equipment, and its adhesion characteristics and aging performance were analyzed. The results showed that the reversible color-changing coating prepared with crystalline violet lactone as the colorant, bisphenol A as the color developer, octadecanol as the solvent, and RTV-II as the base paint can meet the requirements of self-detection of temperature by power equipment with its adhesion performance. The accelerated aging tests using high temperature, light and humidity were carried out in the laboratory, and we concluded that the deterioration degree of the color-changing coating was positively correlated with the temperature. Light can accelerate the aging rate of reversible color-changing coatings, and the degradation process of the coating was significantly accelerated under UV light. The effect of humidity on the coating was not significant. The degradation of the coating after aging for 288 h under indoor conditions was small, while it was accelerated under outdoor natural conditions. This research can provide a reference for the on-site application of reversible color-changing coatings for self-detection of temperature by power equipment.

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“…HVDC transmission is one direction of power system, which plays an increasingly important role in our country's national economy. Although new optical fiber current sensors have a broad application prospect, at present there still exsit many problems [1,2]. It is difficult to deal with the inherent birefringence and linear birefringence of sensing optical fiber in full optical fiber current sensor [3].…”

Section: Introductionmentioning

confidence: 99%

Research of DC Current Measurement Technology Based on Optical Fiber Thermometry

Jia

Yang

Lin

et al. 2011

AMM

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Thin film sensor has the advantages of small size and low cost, which has become a research hotspot in recent years. A measurement system of passive optical fiber DC current sensor based on the thin film sensors is designed in this article. Designs of electric-heating converter, heating-light converter and low-voltage measurement display system are introduced in detail. Experimental results indicate that the general linear correlation between the time constant of fluorescent lifetime and the voltage across the thin film resistor. The feasibility of measurement system is verified via the results of the experiment.

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Research of DC Current Transformer Based on Optical Fiber Thermometry

Cited by 6 publications

References 0 publications

The Application and Dynamic Temperature Test Methods of Micro Thin Film Resistor Sensor

The Application and Dynamic Temperature Test Methods of Micro Thin Film Resistor Sensor

The Adhesion Characteristics and Aging Performance of Reversible Color-Changing Coatings for Self-Detection of Temperature by Power Equipment

Research of DC Current Measurement Technology Based on Optical Fiber Thermometry

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