Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)最新文献

Enhanced online PD evaluation on power transformers using wavelet techniques and frequency rejection filter for noise suppression 利用小波技术和频率抑制滤波器增强电力变压器PD在线评估

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995911

P. Werle, A. Akbari, H. Borsi, E. Gockenbach

引用次数: 22

The influence of water on corona discharge in the flue gas 水对烟气电晕放电的影响

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995940

Peiping Wei, L. Dong, Shuyu Han, Xiaochun Chi, Jia-xiang Yang

{"title":"The influence of water on corona discharge in the flue gas","authors":"Peiping Wei, L. Dong, Shuyu Han, Xiaochun Chi, Jia-xiang Yang","doi":"10.1109/ELINSL.2002.995940","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995940","url":null,"abstract":"In this paper a novel type of a water film corona discharge experiment model is designed. The reactor is composed of needle-plate electrodes that are placed in a glass container filled with the flue gas, (the plate electrode is immersed in the water). The mechanism of the formation of corona discharge in the pollution flue gas containing sulfur dioxide (SO/sub 2/) and nitrogen oxides (NO/sub x/) is investigated under the conditions that there are different concentration of sulfur dioxide and nitrogen oxides of the flue gas and different applied voltages. Based on this the emphasis is on studying the influence of water on corona discharge in flue gas. The experimental results show that the corona wind forming between high-voltage electrode and water film by corona discharge enhances the cleansing efficiency of the flue gas because of the existence of the water film, and the cleaning efficiency will increase with the increase of the voltage under a definite range of applied voltage. According to this effect a water film electrical corona reactor that we design is used to treat the flue gas of the boiler, and the result shows it not only makes the removal efficiency of dust up to 100%, but also makes about 98% of SO/sub 2/ and 85% of NO/sub x/ removal respectively under suitable conditions. This project is very significant for the prevention of acid rain and the treatment of dust of flue gas and the improvement on the traditional electrical dust precipitator.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"44 1","pages":"317-319"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74328571","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 3

Interpretation of RVM measurements, beyond the polarisation spectrum 解释RVM测量，超越极化光谱

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995907

J. van Bolhuis, E. Gulski, J. Smit, D. Pepper

引用次数: 4

Electroluminescence study of fluid-impregnated polymeric dielectric 浸渍聚合物电介质的电致发光研究

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995934

Yang Cao, S. Boggs

引用次数: 0

Partial discharge propagation in concentric neutral power cable over a ground plane 同轴中性电缆中局部放电在地平面上的传播

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995891

Z. Zheng, S. Boggs

引用次数: 3

The impact of drying and oil impregnation conditions and of temperature cycles on the clamping force of power transformer windings 干燥和油浸条件及温度循环对电力变压器绕组夹紧力的影响

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995948

C. Krause, W. Goetz, B. Heinrich

引用次数: 19

Electrical cable loading and the degradation of PVC conduit 电缆载荷与PVC导管的降解

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995991

M. Dyer

引用次数: 0

Comparative investigations on UHF and acoustic PD detection sensitivity in transformers 变压器超高频和声PD检测灵敏度的比较研究

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995900

K. Raja, T. Floribert

{"title":"Comparative investigations on UHF and acoustic PD detection sensitivity in transformers","authors":"K. Raja, T. Floribert","doi":"10.1109/ELINSL.2002.995900","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995900","url":null,"abstract":"This publication deals with UHF and acoustic partial discharge (PD) detection sensitivity assessment of paper/oil insulation configurations which are typical of power transformers. Even though the basis of this topic has been developed some time ago, the knowledge of the accuracy and limits of the sensitivity is of increasing importance for large power transformer test engineers who are confronted not only of reliable measurement of PD but also locating the source of discharges. Discharges representative of that occurring in a transformer were recorded by simulating them in a 220 kV test tank. The models simulated the basic insulation configuration of a transformer with multiple pressboard barriers and oil gaps. The influence of the effect of barriers on the sensitivity of UHF and acoustic PD detection were studied. Classical phase-resolved PD patterns were recorded alongside for analyzing the results of experiments. Experimental outcomes on these models were further verified on a 220 kV winding in a 400 kV test tank. Studies reveal that acoustic. sensitivity is seriously impaired by the presence of barriers, i.e. sensitivity of discharges shielded by insulating barriers is low as compared to those discharges in open oil volumes. For comparable distances, this sensitivity limitation is absent for UHF PD detection. Furthermore, merits and limits of individual methods are discussed that may lead to future research.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"46 1","pages":"150-153"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82145354","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 32

Hydrophobicity recovery in silicone insulators: a closer look at testing 硅树脂绝缘体的疏水性恢复:仔细观察测试

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995917

Nancy E. Frost, Krenceski

引用次数: 0

New aging diagnostics for microdischarge assessment of high dV/dt stressed mica paper capacitors 高dV/dt应力云母纸电容器微放电老化诊断新方法

Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316) Pub Date : 2002-04-07 DOI: 10.1109/ELINSL.2002.995943

H. Gill, R. Doney, E.K. Althoff, W. J. Sarjeant

{"title":"New aging diagnostics for microdischarge assessment of high dV/dt stressed mica paper capacitors","authors":"H. Gill, R. Doney, E.K. Althoff, W. J. Sarjeant","doi":"10.1109/ELINSL.2002.995943","DOIUrl":"https://doi.org/10.1109/ELINSL.2002.995943","url":null,"abstract":"Very fast dV/dt pulsing influences the amount of subpicocoulomb microdischarges observed in reconstituted mica paper capacitors. These microdischarges are analyzed by means of a new aging diagnostic technique. This new approach involves the measurement of the microdischarge inception voltage-the point when microdischarges reach approximately 0.5 pC-and its dependence on the quantity and magnitude of high dV/dt stressing. Taking into account mica's robust nature in thermal environments, little effect from high dV/dt pulses is observed in the material. However, aging does occur at the electrode-mica interface. The Energy Systems Institute (ESI) has developed, over many years, research oriented diagnostic tools for measuring microdischarges on various materials. The Biddle Micro Discharge Analyzer (/spl mu/DA), developed at the ESI in conjunction with AVO-Biddle, accurately measures subpicocoulomb levels of charge on a sample up to at least 20 kV AC+DC. The Model-9 MIT Hard Tube Pulser (MOD-9) has been updated and improved to voltage stress various samples up to a megavolt per microsecond. The focus of this research combines the abilities of the Biddle /spl mu/DA, with the high dV/dt MOD-9 for looking into the relationship of insulation aging as a function of very fast voltage pulses. As more applications move to pulse power, specifically in the military, there is a critical need to evaluate the ability of certain dielectric materials to survive the transition from traditional DC and/or AC power to high rep-rate pulsed power.","PeriodicalId":10532,"journal":{"name":"Conference Record of the the 2002 IEEE International Symposium on Electrical Insulation (Cat. No.02CH37316)","volume":"24 1","pages":"327-330"},"PeriodicalIF":0.0,"publicationDate":"2002-04-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82536324","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2