Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826185
T. Kountotsis, J. Masi
The advent of organic materials for electroluminescent devices has allowed a wide variety of applications in displays, communications, sensors, and the like. This paper gives an overview of this search past, present, and future and the synthesis of promising new complex polymer building blocks which can yield electro-luminescent light emitting diode (LED) devices for displays, and communications. Methods and materials of fabrication are discussed, and test results are interpreted in the light of previous theory and device structure measurements. Device operation, in several configurations and colors, over a wide temperature range, is discussed.
{"title":"Luminescent polymer LEDs: an overview","authors":"T. Kountotsis, J. Masi","doi":"10.1109/EEIC.1999.826185","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826185","url":null,"abstract":"The advent of organic materials for electroluminescent devices has allowed a wide variety of applications in displays, communications, sensors, and the like. This paper gives an overview of this search past, present, and future and the synthesis of promising new complex polymer building blocks which can yield electro-luminescent light emitting diode (LED) devices for displays, and communications. Methods and materials of fabrication are discussed, and test results are interpreted in the light of previous theory and device structure measurements. Device operation, in several configurations and colors, over a wide temperature range, is discussed.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"256 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123245428","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826291
V. Arakelian, E.A. Gourkovskaia
The application of physical chemistry methods for diagnostic purposes is determined by the nature of chemical processes which are occurring in the insulation of electrical equipment. Three applications of physico-chemical diagnostics are considered: for cables, for capacitors, for transformers and reactors and for bushings. A model of diagnostics for oil-filled cables is proposed. Physico-chemical calculations based on analysis of chromatographic data considerably expand the possibilities of diagnostic control of oil-filled equipment. The results of the analysis of oil for gases and water can be expressed as resource parameters for the equipment.
{"title":"Theoretical principles of practical physio-chemical diagnostics of oil-filled electro-equipment","authors":"V. Arakelian, E.A. Gourkovskaia","doi":"10.1109/EEIC.1999.826291","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826291","url":null,"abstract":"The application of physical chemistry methods for diagnostic purposes is determined by the nature of chemical processes which are occurring in the insulation of electrical equipment. Three applications of physico-chemical diagnostics are considered: for cables, for capacitors, for transformers and reactors and for bushings. A model of diagnostics for oil-filled cables is proposed. Physico-chemical calculations based on analysis of chromatographic data considerably expand the possibilities of diagnostic control of oil-filled equipment. The results of the analysis of oil for gases and water can be expressed as resource parameters for the equipment.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"113 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123337097","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826292
M. Perkins, L. Pettersson, N.L. Fantana, T. Oommen, S. Jordan
This paper discusses the general tools available for transformer life assessment and describes specific applications to nuclear station generator transformers that are of strategic importance. The most meaningful life assessment should be aimed at ranking groups of units on the basis of key performance parameters using weight factors.
{"title":"Transformer life assessment tools with specific application to nuclear power station generator transformers","authors":"M. Perkins, L. Pettersson, N.L. Fantana, T. Oommen, S. Jordan","doi":"10.1109/EEIC.1999.826292","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826292","url":null,"abstract":"This paper discusses the general tools available for transformer life assessment and describes specific applications to nuclear station generator transformers that are of strategic importance. The most meaningful life assessment should be aimed at ranking groups of units on the basis of key performance parameters using weight factors.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127128262","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826221
A. Zargari, W. Grisé
The purpose of this presentation is to examine the advantages of utilizing a design of experiments (DOE) software over the traditional methods of setting up experiments. In addition, the authors plan to validate the results of a scientifically designed experiment using DOE-PC IV software. The data are based on a battery of experiments that were run by researchers to see the effects of different variables on the operating temperature of thermal fuses in an electronic circuit.
{"title":"A comparison of traditional methods of setting-up the experiments with the utilization of computer-based DOE software: validation of a scientific experiment","authors":"A. Zargari, W. Grisé","doi":"10.1109/EEIC.1999.826221","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826221","url":null,"abstract":"The purpose of this presentation is to examine the advantages of utilizing a design of experiments (DOE) software over the traditional methods of setting up experiments. In addition, the authors plan to validate the results of a scientifically designed experiment using DOE-PC IV software. The data are based on a battery of experiments that were run by researchers to see the effects of different variables on the operating temperature of thermal fuses in an electronic circuit.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"404 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121809177","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826229
W. F. Brown
"Invention for (an) improved means of giving increased strength to paper." This was the introduction of a patent application in 1859 by Thomas Taylor for the vulcanized fibre process. This patent was the procedure for converting a cellulose paper material into a unique laminate product with an unusual combination of "plastic-like" physical and chemical properties. Paper was transformed into a material that possessed increased strength and durability. VF is a laminate of cellulose paper plies. Here, the author examines vulcanized fibre insulation and explores how a relatively old material is finding a new relevancy in todays's insulation applications.
{"title":"Vulcanized fibre-an old material with a new relevancy","authors":"W. F. Brown","doi":"10.1109/EEIC.1999.826229","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826229","url":null,"abstract":"\"Invention for (an) improved means of giving increased strength to paper.\" This was the introduction of a patent application in 1859 by Thomas Taylor for the vulcanized fibre process. This patent was the procedure for converting a cellulose paper material into a unique laminate product with an unusual combination of \"plastic-like\" physical and chemical properties. Paper was transformed into a material that possessed increased strength and durability. VF is a laminate of cellulose paper plies. Here, the author examines vulcanized fibre insulation and explores how a relatively old material is finding a new relevancy in todays's insulation applications.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"138 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116758340","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826235
M. G. Minnick
Accelerated thermal aging tests have been used to determine long term reliability of polyester films used as ground and phase insulation in electric motors. Consideration must be given not only to the temperatures used in this accelerated aging, but also to the environment in which the insulation is to be functional, such as hermetic applications in various refrigerant systems. Past studies have indicated that dielectric properties are unaffected as long as the films maintain mechanical integrity. Hence, these studies have focused on the tensile strength and elongation retention upon exposure to heat in different environments (sealed in refrigerant systems or oxygen-free atmosphere, and open air). When exposed to temperatures of 140/spl deg/C, these studies have indicated that mechanical degradation mechanisms do not result exclusively from molecular weight degradation from hydrolysis or oxidation, but occur as a result of thermally induced crystallization in the film. Therefore, in addition to initial molecular weight, insulation thermal endurance also depends on film anisotropy and heat set. This investigation indicates that the direction of lowest molecular orientation (highest tensile elongation) appears to have the highest rate of embrittlement. While limited in predicting actual reliability performance of specific film types in motor applications, these results provide a means of optimizing film reliability, as, for instance, selection of a film product, the orientation of the film in a specific motor design, and/or considerations given to motor operating temperature and environment.
{"title":"Accelerated thermal aging of polyester film: mechanisms affecting thermal endurance","authors":"M. G. Minnick","doi":"10.1109/EEIC.1999.826235","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826235","url":null,"abstract":"Accelerated thermal aging tests have been used to determine long term reliability of polyester films used as ground and phase insulation in electric motors. Consideration must be given not only to the temperatures used in this accelerated aging, but also to the environment in which the insulation is to be functional, such as hermetic applications in various refrigerant systems. Past studies have indicated that dielectric properties are unaffected as long as the films maintain mechanical integrity. Hence, these studies have focused on the tensile strength and elongation retention upon exposure to heat in different environments (sealed in refrigerant systems or oxygen-free atmosphere, and open air). When exposed to temperatures of 140/spl deg/C, these studies have indicated that mechanical degradation mechanisms do not result exclusively from molecular weight degradation from hydrolysis or oxidation, but occur as a result of thermally induced crystallization in the film. Therefore, in addition to initial molecular weight, insulation thermal endurance also depends on film anisotropy and heat set. This investigation indicates that the direction of lowest molecular orientation (highest tensile elongation) appears to have the highest rate of embrittlement. While limited in predicting actual reliability performance of specific film types in motor applications, these results provide a means of optimizing film reliability, as, for instance, selection of a film product, the orientation of the film in a specific motor design, and/or considerations given to motor operating temperature and environment.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"35 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124381993","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826207
T. Bertheau, M. Hoof, T. Laird
Due to the competitive environment of the power generation industry, new approaches to condition assessment and maintenance of rotating electrical machines are being explored. Analysis results from partial discharge measurements have proven to be a key tool in predictive maintenance strategies. In this paper, common methods used by ABB for conducting partial discharge measurements are discussed. Special respect is given to online monitoring and the generation of alarms. A key to providing better alarm generation is described. Also, the actions that will be taken after an automatic alarm has been generated by the partial discharge measurement equipment are considered.
{"title":"Permanent on-line partial discharge monitoring as strategic concept to condition based diagnosis and maintenance","authors":"T. Bertheau, M. Hoof, T. Laird","doi":"10.1109/EEIC.1999.826207","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826207","url":null,"abstract":"Due to the competitive environment of the power generation industry, new approaches to condition assessment and maintenance of rotating electrical machines are being explored. Analysis results from partial discharge measurements have proven to be a key tool in predictive maintenance strategies. In this paper, common methods used by ABB for conducting partial discharge measurements are discussed. Special respect is given to online monitoring and the generation of alarms. A key to providing better alarm generation is described. Also, the actions that will be taken after an automatic alarm has been generated by the partial discharge measurement equipment are considered.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125545854","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826193
J. Savage, P. Micheli, J. Suriano
This paper deals with a method to wind motor core slots with greater cross section of installed conductor wires than has been possible with prior turn-by-turn windings. Rapid turn-by-turn winding subjects conductor wires to varying tension which leads to successive slot wires not entering their slots parallel to previously wound wires. Successive turns do not move to the lowest zone of the slot due to friction coupling between themselves and previously wound wires. By inducing vibration in the wire as it is placed in the slot the wire is more apt to migrate to the lowest part of the slot where it can nest in a tighter configuration with the previously wound turns.
{"title":"Achievement of higher motor winding slot fill through the use of piezoelectric excitation device","authors":"J. Savage, P. Micheli, J. Suriano","doi":"10.1109/EEIC.1999.826193","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826193","url":null,"abstract":"This paper deals with a method to wind motor core slots with greater cross section of installed conductor wires than has been possible with prior turn-by-turn windings. Rapid turn-by-turn winding subjects conductor wires to varying tension which leads to successive slot wires not entering their slots parallel to previously wound wires. Successive turns do not move to the lowest zone of the slot due to friction coupling between themselves and previously wound wires. By inducing vibration in the wire as it is placed in the slot the wire is more apt to migrate to the lowest part of the slot where it can nest in a tighter configuration with the previously wound turns.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126840580","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826264
A.A. Paithankar, A. Mokashi, N.M. Singh
The dynamic evolution of partial discharges (PDs) is nonlinear and chaotic in nature. This means that although a PD has a definite governing principle which dictates its evolution, it may behave in an apparently random manner due the existence of nonlinearity. Analyzing the PD process entails considering a PD as a dynamical system. As the PD process evolves, it marks a trajectory in the state-space which is attracted to a specific region. This region of the the state-space is called the attractor. Distinct PD defects have distinct dynamics of evolution which result in a unique structure for PD attractors. In this paper, two methods of characterizing PD attractors are discussed. The first method relates to the statistical or the metric characterization of the PD attractor which attempts to describe the structure of the attractor in metric terms. The topological characterization aims at evaluating the topological invariants of the system, which describe the geometry of the attractor.
{"title":"Statistical and topological characterization of PD defects","authors":"A.A. Paithankar, A. Mokashi, N.M. Singh","doi":"10.1109/EEIC.1999.826264","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826264","url":null,"abstract":"The dynamic evolution of partial discharges (PDs) is nonlinear and chaotic in nature. This means that although a PD has a definite governing principle which dictates its evolution, it may behave in an apparently random manner due the existence of nonlinearity. Analyzing the PD process entails considering a PD as a dynamical system. As the PD process evolves, it marks a trajectory in the state-space which is attracted to a specific region. This region of the the state-space is called the attractor. Distinct PD defects have distinct dynamics of evolution which result in a unique structure for PD attractors. In this paper, two methods of characterizing PD attractors are discussed. The first method relates to the statistical or the metric characterization of the PD attractor which attempts to describe the structure of the attractor in metric terms. The topological characterization aims at evaluating the topological invariants of the system, which describe the geometry of the attractor.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129529863","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}
Pub Date : 1999-10-26DOI: 10.1109/EEIC.1999.826200
D. Barta
The NEMA magnet wire technical committee has been investigating direct current high voltage continuity (HVC) testing of magnet wire for several years. This paper describes efforts to better define (1) a continuity fault, (2) the continuity testing equipment, and (3) a new HVC electrode option. The description of the DC-HVC testing equipment in NEMA MW-1000 Part 3 needs to be improved to reduce the variations allowed in the equipment design and the corresponding wire testing results. The description of the equipment can be improved even without a better definition and understanding of an HVC fault. Investigations of the fault current waveform at the fault circuit has resulted in new insights in the detection and definition of HVC faults. The other major HVC issue still. Remaining is eliminating the double counting of faults by the dual sheave electrodes. A new graphite fiber electrode may resolve the issues of double counting without the potential of introducing any additional problems.
{"title":"Advances in direct current high voltage continuity testing. Report of the NEMA magnet wire MW-7 technical committee","authors":"D. Barta","doi":"10.1109/EEIC.1999.826200","DOIUrl":"https://doi.org/10.1109/EEIC.1999.826200","url":null,"abstract":"The NEMA magnet wire technical committee has been investigating direct current high voltage continuity (HVC) testing of magnet wire for several years. This paper describes efforts to better define (1) a continuity fault, (2) the continuity testing equipment, and (3) a new HVC electrode option. The description of the DC-HVC testing equipment in NEMA MW-1000 Part 3 needs to be improved to reduce the variations allowed in the equipment design and the corresponding wire testing results. The description of the equipment can be improved even without a better definition and understanding of an HVC fault. Investigations of the fault current waveform at the fault circuit has resulted in new insights in the detection and definition of HVC faults. The other major HVC issue still. Remaining is eliminating the double counting of faults by the dual sheave electrodes. A new graphite fiber electrode may resolve the issues of double counting without the potential of introducing any additional problems.","PeriodicalId":415071,"journal":{"name":"Proceedings: Electrical Insulation Conference and Electrical Manufacturing and Coil Winding Conference (Cat. No.99CH37035)","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-10-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133590609","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}
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