Detection of dissolved gas in oil–insulated electrical apparatus by photoacoustic spectroscopy

Mao, Zhixin; Wen, Jinyu

doi:10.1109/mei.2015.7126069

Cited by 37 publications

(12 citation statements)

References 12 publications

(9 reference statements)

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“…Optical techniques came into the field of DGA owing to their superiority of non-contact measurement and immunity to electromagnetic interference. Especially, photoacoustic spectroscopy (PAS) devices, based on the photoacoustic principle, have been developed and installed [14,15]. It has been verified that the optical techniques can detect multiple components simultaneously without consuming the fault gases [16,17].…”

Section: Introductionmentioning

confidence: 99%

Multi-gas detection in power transformer oil based on tunable diode laser absorption spectrum

Jiang

Wang

Han

et al. 2019

IEEE Trans. Dielect. Electr. Insul.

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Online dissolved gas analysis (DGA) is an effective technique to obtain the health status information of insulation oil in power transformers. The typical hydrocarbon gases (methane, ethyne, ethene, ethane) decomposed from insulation oil, are the key indicators to diagnose the fault type and severity. To realize contactless and field measurement, a multi-gas detection system based on tunable diode laser absorption spectrum (TDLAS) is proposed in this paper. Critical technique problems on the light source, long path gas cell, and the topology for multi-gas detection are investigated. Individual central wavelengths of hydrocarbon gases are set at as 1653.72 nm for methane, 1530.37 nm for ethyne, 1620.04 nm for ethene and 1679.06 nm for ethane in the near infrared band. A 10.13 m long multi-pass gas cell is developed with the advantage of anti-vibration design. To share the optical absorption path, an optical switch is adopted to merge the multi-gas detection system. The high sensitivity of the TDLAS multi-gas detection system was demonstrated in the laboratory calibrations, with ethyne detection reaching sub-parts per million level, and the other hydrocarbon gases achieving ppm level. Furthermore, the comparison detection in the real 220 kV power transformer gave evidence to the effective monitoring of DGA, proving it an alternative approach to online detection of multiple gases in power transformer oil.

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Section: Introductionmentioning

confidence: 99%

Multi-gas detection in power transformer oil based on tunable diode laser absorption spectrum

Jiang

Wang

Han

et al. 2019

IEEE Trans. Dielect. Electr. Insul.

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“…When the light is absorbed by gas molecules, a sound is produced due to the increased vibration of the molecules. This phenomenon, which is called the photoacoustic effect, can be utilised for sensing different gases since the generated sound is dependent on the gas type and density [54]. Fig.…”

Section: Photo-acoustic Sensormentioning

confidence: 99%

Survey of different sensors employed for the power transformer monitoring

Samimi

Ilkhechi

2020

IET Science, Measurement & Technology

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“…Dissolved gas analysis (DGA) of transformer oil is one of the most important methods to detect the latent fault of oil-immersed power transformers [8]. It is worth mentioned that the accuracy and stability of the measuring instrument are affected by gas sensors greatly [9]- [12].…”

Section: Introductionmentioning

confidence: 99%

“…Moreover, too many carrier gases lead to complex pipeline system. The photoacoustic spectroscopy sensor (PSS) [6], [9] does not need any carrier gas, nor does the separation of mixed gas, but the sensitivity is low, and the interference of electromagnetic noises is heavy. Meanwhile, the cost of PSS is high.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of Tin Oxide Chromatographic Detector for Dissolved Gases Analysis of Transformer Oil

et al. 2019

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The analysis of dissolved gases in insulation oil is of great significance to transformer status evaluation. In this paper, a chromatographic detector based on the nano-tin oxide fiber as well as a chromatography system is developed. The mechanism of the sensor for detecting six component feature gases (i.e., H 2 , CO, CH 4 , C 2 H 4 , C 2 H 6 , and C 2 H 2 ) in transformer oil is expounded, on basis of which the exponent-logarithmic model between conductance and gas concentrations is proposed. Then, the repeatability and accuracy of the nano-tin oxide detectors are tested. The experimental results show that the gases mixture can be separated well by the designed gas chromatography system, and six component gases mixture detection can be realized by the developed detector. Meanwhile, by using the proposed model, high precision of dissolved gas measurement can be achieved, thus the validity of the presented model is verified. Moreover, compared with other chromatographic detectors, i.e., flame ionization detector, the only carrier gas needed for the nano-tin oxide chromatographic detector is the synthetic air, the hardware cost and complexity of system are reduced largely, showing promising applicable value in the engineering practice. INDEX TERMSPower transformer, chromatography, dissolved gas analysis, nano-tin oxide detector. JINGMIN FAN received the B.Eng. and M.Eng. degrees in electronic science and technology

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Detection of dissolved gas in oil–insulated electrical apparatus by photoacoustic spectroscopy

Cited by 37 publications

References 12 publications

Multi-gas detection in power transformer oil based on tunable diode laser absorption spectrum

Multi-gas detection in power transformer oil based on tunable diode laser absorption spectrum

Survey of different sensors employed for the power transformer monitoring

Characteristics of Tin Oxide Chromatographic Detector for Dissolved Gases Analysis of Transformer Oil

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