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| 1 | Estimation of the Type of Low Energy Discharge in GIS Adopting Characteristic Gas显示文摘In order to guarantee safe operations, low energy discharge within gas insulated switchgear (GIS) should be detected as soon as possible before they develop severely and cause final breakdown failures. This paper aims to present a GIS discharge diagnosis technique adopting gaseous decompositions. To reach this aim, needle-plate electrode and the sphere-plate electrode with metallic particles on the plate are designed to simulate two kinds of low energy discharge, namely, corona discharge and spark discharge, respectively. After sampling and analyzing the gases, different yields of gaseous by-products under different types of low energy discharge are obtained. Based on the decomposition mechanisms reported by previous researches and the experiment results, it can be concluded that S2OF10, SO2F2 , and SO2 can be used as the characteristic gas to identify low energy discharge; the increment of S2OF10 can indicate the occurrence of low energy discharges while the volume ratio between SO2F2 and SO2 can define the type of low energy discharge. | CHEN Jun LI Li YAO Weijian TANG Yang ZHENG Xiaoguang YU Jianhui LUO Yunbai ZHOU Wenjun | 2011 | Wuhan University Journal of Natural Sciences2011，16，4： | 7 |
| 2 | Purification of caprolactam by means of an electrodeionization technique显示文摘 | Ping Yu Zehua Zhu Yunbai Luo Yuehua Hu Sijian Lu | 2005 | Desalination2005，，3： | 1 |
| 3 | Study of pervaporation for dehydration of caprolactam through blend NaAlg–poly(vinyl pyrrolidone) membranes on PAN supports显示文摘 | Tianrong Zhu Yunbai Luo Yanwen Lin Qin Li Ping Yu Ming Zeng | 2010 | Separation and Purification Technology2010，，2： | 1 |
| 4 | Dehydration of caprolactamwater mixtures through cross-linked PVA composite pervaporation membranes显示文摘 | ZHANG Lci YU Ping LUO Yunbai | 2007 | Journal of Membrane Science2007，3，6： | 1 |
| 5 | Removal of NO from flue gas by wet scrubbing with NaClO2/( NH2 )2CO solutions显示文摘 | WEI Jinchao LUO Yunbai Yu Ping | 2009 | Journal of Industrial and Engineering Chemistry2009，15，1： | 1 |
| 6 | Comparative behavior of PVA-PAN and PVA-PES composite pervaporation membranes in the pervaporative dehydration of caprolactam显示文摘 | Zhang Lei Yu Ping Luo Yunbai | 2007 | Journal of Applied Polymer Science2007，103，4： | 1 |
| 7 | Application of KF/MgO as a heterogeneous catalyst in the production of biodiesel from rapeseed oil显示文摘 | Tao Wan Ping Yu Shangkun Gong Qiang Li Yunbai Luo | 2008 | Korean Journal of Chemical Engineering2008，，5： | 1 |
| 8 | Preparation and characterization of NaY/PVDF hybrid ultrafiltration membranes containing silver ions as antibacterial materials显示文摘 | Chanjuan Liao Ping Yu Jianquan Zhao Liming Wang Yunbai Luo | 2011 | Desalination2011，，1： | 1 |
| 9 | Absorption of CO2 by amino acid- functionalized and traditional dicationic ionic liquids: Properties,Henry's law constants and mechanisms显示文摘 | Zhang Yi Yu Ping Luo Yunbai | 2013 | Chemical Engineering Journal2013，214，1： | 1 |
| 10 | Study on the fault diagnosis of transformer based on the grey relational analysis显示文摘 | Song Bin Yu Ping Luo Yunbai | 2002 | Power System Technology2002，4，6： | 1 |
| 11 | Investigation on insulation properties of HFO-1336mzz(E)and N_(2)/CO_(2)mixtures as SF_(6) substitutes in gas-insulated electrical applications显示文摘The emissions of SF6 have been restricted owing to 3400 years of atmospheric lifetime and high global warming potential(GWP)as an insulating gas in gas-insulated electrical equipment.In this study,HFO-1336mzz(E)and N_(2)/CO_(2)mixtures are proposed as SF6 substitutes for their short atmospheric lifetime,low GWP and superior insulation performance.The GWP of HFO-1336mzz(E)is only 18 and its atmospheric lifetime is days to weeks.The breakdown voltage of 25%HFO-1336mzz(E)and N_(2)/CO_(2)mixtures is about 85%that of pure SF6 under alternating current.The self-recovery ability of HFO-1336mzz(E)and CO_(2)mixtures is superior to that of HFO-1336mzz(E)and N_(2)mixtures.The decomposition characteristic of HFO-1336mzz(E)shows that a tiny amount of its gas might initiate a carbonisation reaction to form carbon after multiple breakdown tests,which is verified by observations using energy dispersive X-rays spectroscopy and scanning electron microscope.The acute toxicity test of HFO-1336mzz(E)indicates that the gas is non-toxic.The results show that HFO-1336mzz(E)and N_(2)/CO_(2)mixtures are potential substitutes for SF6 in electrical applications. | Zhanyang Gao Yunbai Luo Ruichao Peng Xiaoxiao Wang Ping Yu Wenjun Zhou | 2023 | High Voltage2023，8，1： | 1 |
| 12 | Removal of NO from flue gas by wet scrubbing with NaClO2/ ( NH2 ) 2CO solutions 显示文摘 | Wei Jinchao Luo Yunbai Yu Ping | 2009 | Journal of Industrial and Engineering Chemistry2009，15，1： | 1 |
| 13 | Chemistry of copper trimercaptotriazine (TMT) compounds and removal of copper from copper-ammine species by TMT显示文摘 | Liao dongmei Luo yunbai Yu ping | 2006 | Applied Organometallic Chemistry2006，20，2： | 1 |
| 14 | Purification of caprolactam by means of an electrodeionization tech- nique 显示文摘 | Ping Yu Zehua Zhu Yunbai Luo | 2005 | Desalination2005，74，： | 1 |
| 15 | Preparation and characterization of NaY/PVDF hybrid ultrafiltration membranes containing silver ions as antibacterial materi- als显示文摘 | Liao Chanjuan Yu Ping Luo Yunbai | 2011 | Desalination2011，272，： | 1 |
| 16 | Swelling Behaviors and Pervaporation Properties of CA/PAN Composite Membranes for Separation of Caprolactam/Water Mixtures显示文摘The composite membranes with cellulose acetate(CA) as the separating layer material and polyacrylonitrile(PAN) as the supporting layer material were prepared for separating caprolactam(CPL) from CPL/water mixtures by pervaporation technique.The swelling experiments were carried out to investigate the effects of swelling time and CPL concentration on the degree of swelling.The results showed that the CA membrane reached swelling equilibrium within 24 h,and the degree of swelling first slightly decreased then increased with the increase of CPL concentration in the feed under the experimental conditions.Respectively comparing flux with permeance,and separation factor with selectivity,we found out that the separation performance of the CA/PAN composite membrane is more strongly dependent on its hydrophilic/hydrophobic nature as well as on the effects of operating parameters,such as feed composition concentration and feed temperature. | ZHANG Lei LUO Yunbai XUE Gaifeng YU Ping | 2010 | Wuhan University Journal of Natural Sciences2010，15，5： | 0 |
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