Search Results - "Zhang, Qiaogen"

A Compact Series-Connected SiC MOSFETs Module and Its Application in High Voltage Nanosecond Pulse Generator by Pang, Lei, Long, Tianjun, He, Kun, Huang, Yongrui, Zhang, Qiaogen

“…Nanosecond pulse discharge plasma has many prospects in industrial applications, and high-voltage repetitive nanosecond pulse generators with compact design…”
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Optimal dissolved gas ratios selected by genetic algorithm for power transformer fault diagnosis based on support vector machine by Li, Jinzhong, Zhang, Qiaogen, Wang, Ke, Wang, Jianyi, Zhou, Tianchun, Zhang, Yiyi

“…Dissolved gas analysis (DGA) of oil is used to detect the incipient fault of power transformers. This paper presents a new approach for transformer fault…”
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Dual effects of ultrasound on fabrication of anodic aluminum oxide by Wu, Zhicheng, Zhao, Yuxiao, Fan, Jiasheng, Gao, Chao, Yuan, Xieyu, Wang, Guoli, Zhang, Qiaogen

“…•Decoupling of the effects of bubble desorption and mass transfer enhancement.•Nanopore-expansion and promoted AAO growth efficiency through bubble desorption…”
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In situ monitoring of epoxy resin curing process: Using glass transition as a bridge by Wu, Zhicheng, Chen, Qingyun, Liu, Dexing, Fan, Jiasheng, Zhang, Qiaogen, Chen, Weijiang

“…Dielectric analysis (DEA) is an effective method for monitoring the curing process of epoxy resin (EP) in situ, but the influence of curing temperature on the…”
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A high voltage multi level arbitrary waveform generator for insulation testing by Lei, Pang, Mingtian, Ye, Geqi, Li, Qiaogen, Zhang, Kun, He

“…Due to the extensive applications of power electronic devices in power grids, many insulation components will be stressed by high voltage PWM, multilevel or…”
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Investigation on gas generation characteristics in transformer oil under vibration by Guo, Chong, Zhang, Qiaogen, Zhang, Rui, He, Xiaohui, Wu, Zhicheng, Wen, Tao

“…Operating experience has shown that characteristic gases can be found in oil‐immersed power transformers and high‐voltage reactors under strong vibration…”
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Thermal runaway and induced electrical failure of epoxy resin in high‐frequency transformers: Insulation design reference by Shang, Xingyu, Pang, Lei, Bu, Qinhao, Zhang, Qiaogen

“…Solid‐state transformers (SSTs) have applications in medium‐voltage direct current (MVDC) grids and compact power systems. High‐frequency transformer (HFT) is…”
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Effectiveness of on-site dielectric test of GIS equipment by Wu, Zhicheng, Zhang, Qiaogen, Ma, Jingtan, Li, Xiaoang, Wen, Tao

“…Even for gas-insulated metal-enclosed switchgear (GIS) equipment that has passed an on-site dielectric test, some dielectric failure can occasionally occur…”
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Effects of current rate on electrically exploding aluminum wires in argon gas by Liu, Haoyu, Guo, Xiaofan, Pang, Xianhai, Zhao, Junping, Zhang, Qiaogen

“…The electrically exploding wires (EEWs) method is a low-cost, high-efficiency method for nanoparticle preparation. The current parameter is a determining…”
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Influence of spike defect on the impulse breakdown characteristics of SF6 gas gap in GIS by Liu, Xuandong, Zhang, Lingli, Wen, Tao, Zhang, Qiaogen

“…By using 1 MV Marx generator and a 220 kV GIS bus, an experiment platform has been established, and a stainless steel needle is applied to simulate spike…”
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Characteristics of the Partial Discharge in the Development of Conductive Particle-Initiated Flashover of a GIS Insulator by Zhao, Junping, An, Zhengjie, Lv, Bin, Wu, Zhicheng, Zhang, Qiaogen

“…Conductive particles are one of the most important defects which can greatly degrade the performance of gas-insulated metal-enclosed switchgear (GIS). Many…”
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Novel heat pipe current-carrying tube of RIP valve-side bushing in converter transformer by Chen, Ming, Liu, Xuandong, Wu, Zhicheng, Zhao, Yi, Zhang, Qiaogen, Tang, Hao

“…•A novel heat pipe current-carrying tube of the bushing is proposed.•The proposed heat pipe structure can homogenize the electro-thermal…”
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Wood‐Derived, Vertically Aligned, and Densely Interconnected 3D SiC Frameworks for Anisotropically Highly Thermoconductive Polymer Composites by Zhou, Xiaonan, Xu, Songsong, Wang, Zhongyu, Hao, Liucheng, Shi, Zhongqi, Zhao, Junping, Zhang, Qiaogen, Ishizaki, Kozo, Wang, Bo, Yang, Jianfeng

“…Construction of a vertically aligned and densely interconnected ordered 3D filler framework in a polymer matrix is a challenge to attain significant thermal…”
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Motion and discharge characteristics of metal particles existing in GIS under DC voltage by You, Haoyang, Zhang, Qiaogen, Guo, Can, Xu, Puming, Ma, Jingtan, Qin, Yifan, Wen, Tao, Li, Yuan

“…Free particles formed in the discharge process or equipment aging severely threaten the operation security of GIS, which draws great attention of researchers…”
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A method for synergistic effect evaluation of SF6/N2 gas mixtures by Guo, Can, Zhang, Qiaogen, Wen, Tao

“…A new method was introduced to evaluate and analyze synergistic effect including negative synergistic effect of SF 6 /N 2 gas mixtures breakdown voltage. This…”
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Investigation on bubbling phenomenon in oil-paper insulation by Gao, Meng, Zhang, Qiaogen, Ding, Yuqin, Wang, Tonglei, Ni, Heli, Yuan, Weixiong

“…Bubbling phenomenon usually arises from overheated cellulose insulation in oil, which is known for deleterious effects on the insulation strength of…”
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Effect of cellulose impurities on partial discharges in oil-pressboard insulation under DC voltage by Li, Yuan, Zhang, Qiaogen, Ding, Yuqin, Zhao, Yi

“…Previous studies indicate that cellulose bridges in oil-pressboard insulation are self-generating, and can influence the characteristics of partial discharges…”
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The Breakdown Characteristics of Single-Gap Pseudospark Discharge Under Nanosecond Pulsed Voltages by Zhang, Jia, Zhao, Junping, Zhang, Qiaogen

“…In this paper, an experimental investigation of pseudospark discharge behaviors was conducted under nanosecond pulsed voltages using a flexible discharge…”
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Extension of the empirical formula for pulsed electric strength of transformer oil by Wang, Tonglei, Zhang, Qiaogen, Ni, Heli, Yuan, Weixiong

“…Discharges in liquid obey time effect, pressure effect and scale effect. Traditional formulas are usually applied in a narrow range to keep the formula form…”
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Characteristics and Diffusion of Electrical Explosion Plasma of Aluminum Wire in Argon Gas by Zhao, Junping, Xu, Zhuo, Yan, Wenyu, Liu, Haoyu, Zhang, Qiaogen

“…Electrical explosion of aluminum wire is a very promising method for aluminum nanoparticle production. The exploding wire plasma has significant influence on…”
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