ANN-based calibration model of FTIR used in transformer online monitoring

Li, Honglei; Xian-yong, Liu; Zhou, Fangjie; Tan, Kexiong

doi:10.1117/12.597244

Cited by 2 publications

(2 citation statements)

References 4 publications

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“…Compared with Polytetrafluoroethylene membrane, Polyperfluoro ethylene-propylene membrane has higher gas permeability coefficients [15]. The transport properties of Polyperfluoro ethylene-propylene have been testified in [16]. Under that circumstance, it takes less than 96 hours for H 2 and CO to reach the equilibrium.…”

Section: Figure1 the Whole System Sketch Mapmentioning

confidence: 98%

An On-Line Monitoring System for Gases Dissolved in Transformer Oil Using Wireless Data Acquisition

Zhao

2009

2009 Asia-Pacific Power and Energy Engineering Conference

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Dissolved gas analysis (DGA) is a certain method to diagnose incipient fault of transformers through the correlation between the content of gases dissolved in transformer oil and a particular malfunction. This paper developed an on-line monitoring system to detect the concentrations of H 2 and CO dissolved in transformer oil. The system mounts Polyperfluoro ethylene-propylene membrane, electrochemical gas sensors, a wireless communication terminal based on RF transceiver, and data management software recording the concentration of H 2 and CO. Compared with off-line gas chromatograph results of concentrations of H 2 and CO, the concentration trend of on-line detecting results is in agreement with off-line results approximately through 8 months. For hydrogen detection, the biggest error of the system is 4ppm when the on-line results range from 10ppm to 21ppm; for CO detection, the biggest error of the system is 26ppm when on-line results range from 136ppm to 189ppm. The whole system provides a low cost, simple way to on-line monitor H 2 and CO dissolved in transformer oil. And the system which incorporated wireless data acquisition will definitely shorten a time gap between the changes of gas concentrations and dissolved gas analysis.

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Section: Figure1 the Whole System Sketch Mapmentioning

confidence: 98%

An On-Line Monitoring System for Gases Dissolved in Transformer Oil Using Wireless Data Acquisition

Zhao

2009

2009 Asia-Pacific Power and Energy Engineering Conference

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“…Dissolved gas analysis (DGA) use different types of transformer faults correspond to different components and concentrations of dissolved gases in transformer oil to analyze the fault gases (H 2 , CO, CO 2 , CH 4 , C 2 H 6 , C 2 H 4 , and C 2 H 2 ), in order to determine the type of transformer fault. DGA can diagnose internal transformer fault regularly during the transformer operation, and will not be affected by external electromagnetic fields [4], is an effective technique which has been widely used to detect latent faults in transformer, and oil-gas permeability technology is just the important prerequisite and key technology to achieve the requirements of DGA.…”

Section: Introductionmentioning

confidence: 99%

Research on the Oil-Gas Permeability of Mixed Hollow Fiber Membrane Made by PTFE and PHFP

Chen

Hao

2011

AMR

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Power transformer on-line monitoring on dissolved gas in oil is one of the effective and technical means to achieve the transformer state detection and fault diagnosis, and oil-gas permeability is one of the core technologies to implement transformer on-line monitoring. The traditional methods of oil-gas separation such as vacuum method and mechanical oscillation method were unable to satisfy the requirements of transformer on-line monitoring; and the methods which were used commonly in recent years, like dynamic headspace separation, corrugated tube, carrier gas elution etc, have a high rate of gas-separation and have already been used in some on-line monitoring products. However, the problems still exist: easy formation of oil pollution, so the oil can not be recycled and the device structure is relatively complex. This paper based on the separation principle of polymer membrane, proposes mixed hollow fiber membrane made by polytetrafluoroethylene (PTFE) and polyhexafluoropropylene (PHFP), and designs an oil-gas separation test platform formed by the storage tank, oil-gas permeability tank, temperature controller and gas chromatographic analyzer etc, does laboratory research on the oil-gas permeability of the mixed hollow fiber membrane at different temperatures. The results show that, the permeability of the mixed hollow fiber membrane is obviously better than the commonly used single fluoride film or rubber film, seven fault gases H2, CO, CO2, CH4, C2H6, C2H4, and C2H2 can be separated efficiently form transformer oil within 24 hours. More to the point, the equilibrium time is short, the gas permeability is high and the test platform structure is simple, all of these advantages provide a strong guarantee for the development of on-line monitoring technology on dissolved gas in transformer oil.

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ANN-based calibration model of FTIR used in transformer online monitoring

Cited by 2 publications

References 4 publications

An On-Line Monitoring System for Gases Dissolved in Transformer Oil Using Wireless Data Acquisition

An On-Line Monitoring System for Gases Dissolved in Transformer Oil Using Wireless Data Acquisition

Research on the Oil-Gas Permeability of Mixed Hollow Fiber Membrane Made by PTFE and PHFP

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