Search Results - "Cheng, Hongtu"

SF6 decomposition and insulation condition monitoring of GIE: A review by Zeng, Fuping, Li, Haotian, Cheng, Hongtu, Tang, Ju, Liu, Yilu

“…The statistics of the Conference International des Grands Reseaux Electriques (CIGRE) indicate that the operational reliability of SF6 gas‐insulated equipment…”
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Dissolved Gas Analysis in Transformer Oil Using Pt-Doped WSe2 Monolayer Based on First Principles Method by Chen, Zhenwei, Zhang, Xiaoxing, Xiong, Hao, Chen, Dachang, Cheng, Hongtu, Tang, Ju, Tian, Yuan, Xiao, Song

“…The composition and content of dissolved gases in transformer oil are closely related to the type of faults in the transformer and the severity of potential…”
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Study on localization of transformer partial discharge source with planar arrangement UHF sensors based on singular value elimination by Zhang, Guozhi, Zhang, Xiaoxing, Tang, Ju, Cheng, Hongtu

“…The large-scale power transformer gap leakage electromagnetic wave partial discharge detection method belongs to the external UHF detection method. This method…”
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Photoacoustic spectroscopy: Trace CO detection by using 10 mW near-infrared laser and cantilever beam by Cheng, Hongtu, Zhang, Xiaoxing, Bian, Chao, Cheng, Jun, Chen, Zhenwei, Zhang, Yin, Tang, Ju, Xiao, Song

“…Sulfur hexafluoride (SF6) is commonly used in gas insulated switchgears (GIS) as an insulating medium. When local overheating or partial discharge occurs in…”
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SF6 decomposition behaviour under partial discharge of typical insulation defects in gas‐solid insulated valve‐side bushing of converter transformer by Cheng, Hongtu, Zeng, Fuping, Tang, Bowen, Li, Haotian, Tang, Ju, Huang, Zujian, Chao, Xianzong

“…In this paper we investigated SF6 decomposition behaviour of typical insulation defects in gas‐solid insulated converter transformer valve‐side bushing under…”
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Optical signals measurement of discharge plasma in air switch cabinet using a fluorescent optical fiber as the sensor by Cheng, Hongtu, Hao, Weidong, Zhu, Xi, Fang, Zhi

“…Abstract Air switch cabinets are widely employed in the power industry, there is, however, no reliable methods for detecting partial discharges (PDs). Because…”
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The effect of the convex lens focal length and distance between the optical devices on the photoacoustic signals in gas detection by Cheng, Hongtu, Tang, Ju, Zhang, Yin, Zhang, Xiaoxing, Zeng, Fuping

“…•The PA signals intensity is associated with the convex lens (CL) focal length.•The PA signals is associated with the distance between the optical devices.•The…”
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The effect of the photoacoustic Field-Photoacoustic cell coupling term on the performance of the gas detection system by Cheng, Hongtu, Zeng, Fuping, Zhang, Xiaoxing, Tang, Ju, Zhang, Yin

“…•A new influential factor of the PA signals is proposed.•The PA signals varies with the optical path conditions greatly.•The resonator length has a significant…”
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Ladder‐Wise calculation method for z‐coordinate of transformer PD source based on planar layout UHF antenna sensors by Zhang, Guozhi, Zhang, Xiaoxing, Cheng, Hongtu, Tang, Ju

“…In locating a transformer partial discharge (PD) source, there is a large fluctuation error in the z‐coordinate of the location, which results with planar…”
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Study on Photoacoustic Spectroscopy Detection of CO in Gas Insulation Equipment by Chen, Zhenwei, Zhang, Xiaoxing, Cheng, Hongtu, Zhang, Yin, Yang, Tingli, Zhang, Yangxiaoge

“…The related regulations for electric power industry stipulate that CO gas is an important component to be detected when analyzing the gas composition of SF 6…”
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A manual operated and eco-friendly plasma-assisted polymerization method for enhancing surface weather resistance of insulation by Zhu, Xi, Dai, Luyi, Guan, Xiuhan, Shen, Zhangliang, Wu, Zexuan, Cheng, Hongtu, Fan, Jiajie, Cui, Xinglei, Fang, Zhi

“…[Display omitted] •Novel dry processing method for contaminated insulation recovery and service life prolonging.•Plasma-assisted polymerization based on…”
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Research on the effect of the laser beam location on the performance of mid-infrared photoacoustic spectroscopy based gas detection system by Cheng, Hongtu, Zeng, Fuping, Zhang, Xiaoxing, Tang, Ju, Zhang, Yin

“…•The effect of the laser beam location on the PA signals was analyzed.•The sensitivity decreases with the increased axial distance.•The best sensitivity…”
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Detection of decomposition products of C4F7N-CO2 gas mixture based on infrared spectroscopy by Zhang, Xiaoxing, Zhang, Yin, Huang, Yi, Li, Yi, Cheng, Hongtu, Xiao, Song

“…Heptafluoroisobutyronitrile (C4F7N)-carbon dioxide (CO2) gas mixture has been gradually applied as an excellent environment-friendly insulating medium. The…”
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Research on C4F7N gas mixture detection based on infrared spectroscopy by Zhang, Yin, Zhang, Xiaoxing, Liu, Chang, Li, Yi, Cheng, Hongtu, Xiao, Hai

“…[Display omitted] •The calculated and experimental IR spectrum of C4F7N.•The mixing ratio detection and leakage detection for C4F7N gas mixture.•A reference…”
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Detection of trace carbon monoxide based on cantilever enhanced photoacoustic spectroscopy at 2.33 μm by Chen, Zhenwei, Zhang, Xiaoxing, Yang, Tingli, Fan, Songli, Cheng, Hongtu, Xu, Guodong, Zhang, Yin, Zhou, Haikuo

“…•The cantilever enhanced photoacoustic spectroscopy detection system is built up to carries out the photoacoustic spectroscopy detection of CO, which reaches…”
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The application of fluorescent optical fiber in partial discharge detection of Ring Main Unit by Cheng, Hongtu, Zhang, Xiaoxing, Tang, Ju, Xiao, Song, Wang, Tingting, Luo, Bing, Tian, Shuangshuang

“…•The partial discharge in SF6 ring main unit is detected by optical method.•The characteristics of partial discharge optical signals are analyzed.•The…”
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Construction of response surface model for photoacoustic-based H2S measurement system and significance analysis of multiple influential factors by Cheng, Hongtu, Zeng, Fuping, Tang, Ju, Zhang, Xiaoxing, Huang, Zujian, Chao, Xianzong

“…Herein we first introduce the relationship between the photoacoustic (PA) signals' intensity of hydrogen sulfide (H2S) versus multiple parameters of optical…”
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Simultaneous Detection of C₂H₂ and CO Based on Cantilever-Enhanced Photoacoustic Spectroscopy by Cheng, Hongtu, Tang, Ju, Zhang, Xiaoxing, Li, Yi, Hu, Junyu, Zhang, Yin, Mao, Shiyi, Xiao, Song

“…Gas detection based on photoacoustic (PA) spectroscopy has attracted extensive attention due to high sensitivity and portability. Herein, to achieve the…”
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SF 6 decomposition and insulation condition monitoring of GIE: A review by Zeng, Fuping, Li, Haotian, Cheng, Hongtu, Tang, Ju, Liu, Yilu

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SF 6 decomposition behaviour under partial discharge of typical insulation defects in gas‐solid insulated valve‐side bushing of converter transformer by Cheng, Hongtu, Zeng, Fuping, Tang, Bowen, Li, Haotian, Tang, Ju, Huang, Zujian, Chao, Xianzong

“…Abstract In this paper we investigated SF 6 decomposition behaviour of typical insulation defects in gas‐solid insulated converter transformer valve‐side…”
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