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Proceedings of 1996 Transmission and Distribution Conference and Exposition最新文献

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Comparison of two bulk power adequacy assessment programs: TRELSS and COMREL 两种大容量电力充足性评估方案:TRELSS和COMREL的比较
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.547551
M. Beshir, T. Cheng, A. Farag
{"title":"Comparison of two bulk power adequacy assessment programs: TRELSS and COMREL","authors":"M. Beshir, T. Cheng, A. Farag","doi":"10.1109/TDC.1996.547551","DOIUrl":"https://doi.org/10.1109/TDC.1996.547551","url":null,"abstract":"The adequacy assessment application considerations such as the contingency enumeration techniques, the network solution methods, and the remedial action approaches are the principal aspects in bulk power reliability assessment. In this paper, these fundamental issues are evaluated and compared. The comparison is made by conducting adequacy studies on a real power network of the Los Angeles Department of Water and Power and on the IEEE Reliability Test System (RTS). Two computer programs-COMREL and TRELSS-are used in these studies. Both programs use the state enumeration method, and the AC power flow solution is used for the evaluation.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121459261","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: 27
Power quality instrument with voice-mail-like user interface: a novel technology assists customers, utility marketing executives 具有语音邮件式用户界面的电能质量仪器:一种新颖的技术，可帮助客户、公用事业营销主管
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.547569
A. McEachern, S. Bhatt
{"title":"Power quality instrument with voice-mail-like user interface: a novel technology assists customers, utility marketing executives","authors":"A. McEachern, S. Bhatt","doi":"10.1109/TDC.1996.547569","DOIUrl":"https://doi.org/10.1109/TDC.1996.547569","url":null,"abstract":"Utility \"key account executives\" need immediate access to power quality information, but are typically equipped only with a cellular phone and a pager. A new power quality instrument includes a speech synthesizer and a telephone tone decoder. Utility marketing executives, and their customers, can retrieve power quality information through a voice-mail-like interface directly from the instrument. Utility engineers can extract power quality event signatures from the same instrument. The instrument can also communicate power quality events directly to numeric and alphanumeric pagers. EPRI-directed field-testing is under way at 9 utilities.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124133368","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: 0
Outdoor polymeric insulators long-term exposed to HVDC 室外聚合物绝缘子长期暴露于高压直流
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545926
T. Sorquist, A. Vlastós
{"title":"Outdoor polymeric insulators long-term exposed to HVDC","authors":"T. Sorquist, A. Vlastós","doi":"10.1109/TDC.1996.545926","DOIUrl":"https://doi.org/10.1109/TDC.1996.545926","url":null,"abstract":"Field experience from outdoor polymeric insulators exposed to HVDC under natural contamination conditions is presented. This paper summarizes the peak leakage current statistics, the hydrophobicity and the surface material conditions studied by electron spectroscopy for chemical analysis (ESCA) and attenuated total reflection Fourier transform infrared (ATR-FTIR) spectroscopy. The results show a strong interrelation between the surface conditions and the performance with respect to leakage currents. Moreover, the results show that the surface conditions and the performance of the insulators exposed to HVDC are rather similar to those of the insulators exposed to HVAC.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129542637","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: 37
Design, installation, and field experience with an overhead transmission dynamic line rating system 具有架空输电动态线路额定系统的设计、安装和现场经验
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545961
J. Engelhardt, S. Basu
{"title":"Design, installation, and field experience with an overhead transmission dynamic line rating system","authors":"J. Engelhardt, S. Basu","doi":"10.1109/TDC.1996.545961","DOIUrl":"https://doi.org/10.1109/TDC.1996.545961","url":null,"abstract":"Dynamic line rating (DLR) systems for high voltage overhead transmission lines have been installed by three utilities over the past five years. These DLR systems utilize the Power Donut/sup TM/ to measure load and conductor temperature at several locations over the length of the circuit. The effective wind acting on the conductor at each site is determined in real-time by a dynamic heat balance and used to compute the normal, LTE and STE ratings each minute. The lowest ratings of all locations define the circuit's ratings and are sent to SCADA as analog signals. This method is known as the conductor temperature model (CTM) as opposed to the weather model (WM) which calculates ratings using weather data only. These first DLR installations have also measured weather parameters at each ground station location to allow a comparison of the two methods. Data from the latest of these systems is presented and the behavior of the real time ratings are discussed.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129669752","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: 66
Engineering analysis of electrical effects for the COTP 500 KV transmission line and EBMUD aqueduct corridor COTP 500kv输电线路与EBMUD渡槽走廊电气效应工程分析
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.547562
O. Lewis, G. Bell, Jinxi Ma
{"title":"Engineering analysis of electrical effects for the COTP 500 KV transmission line and EBMUD aqueduct corridor","authors":"O. Lewis, G. Bell, Jinxi Ma","doi":"10.1109/TDC.1996.547562","DOIUrl":"https://doi.org/10.1109/TDC.1996.547562","url":null,"abstract":"A study was conducted to determine AC electrical interference effects arising in the East Bay Municipal Utility District's (EBMUD) Mokelumne Aqueducts due to their proximity to the Olinda-Tracy 500 kilovolt (kV) transmission line operated by the Western Area Power Administration (WESTERN). A six-wire gradient control wire mitigation system selected by EBMUD was modeled and evaluated. The study shows that the mitigation system performs satisfactorily under all conditions examined. During steady state conditions, touch voltages are maintained below 15 volts throughout the entire length of the three aqueducts. During fault conditions, touch voltages are maintained below 263 volts, the design limit calculated according to ANSI/IEEE Standard 80. The currents flowing through the isolator/surge protectors do not exceed the ratings of these devices, during steady state and fault conditions.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"94 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130037259","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: 0
A novel approach for interactive protection system simulation 一种交互式保护系统仿真的新方法
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.547555
M. Kezunovic, Q. Chen
{"title":"A novel approach for interactive protection system simulation","authors":"M. Kezunovic, Q. Chen","doi":"10.1109/TDC.1996.547555","DOIUrl":"https://doi.org/10.1109/TDC.1996.547555","url":null,"abstract":"This paper presents a new approach for interactive protection system simulation. In the new approach, power system transients are simulated using an Electromagnetic Transients Program (EMTP), while protective relays can be modeled using any high level language or commercially available software package, such as MATLAB. The interactions between power systems and relays are implemented by using an \"interaction buffer\". Using this technique, the EMTP can be run in single-step, multiple-step, or mixed mode. This new approach makes the protection system simulation quite efficient, flexible and accurate.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124415505","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: 61
Design, installation and field experience with real-time cathodic protection monitoring of pipe-type cable systems 具有管式电缆系统阴极保护实时监测的设计、安装和现场经验
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.547581
F. Hoppe, S. Basu, G. Rogers
{"title":"Design, installation and field experience with real-time cathodic protection monitoring of pipe-type cable systems","authors":"F. Hoppe, S. Basu, G. Rogers","doi":"10.1109/TDC.1996.547581","DOIUrl":"https://doi.org/10.1109/TDC.1996.547581","url":null,"abstract":"Corrosion-based damage on pipe-type cable systems used in underground power transmission is a common problem today, even though virtually all of these systems utilize cathodic protection. The economic consequences resulting from corrosion-based leaks and/or structural damage are significant. Given the age of these feeders, unless a solution to the corrosion problem is found, the cost of these problems will continue to increase. This paper discusses the need for and implementation of on-line, real time cathodic protection monitoring systems. The design, installation, architecture and field experience related to operational monitoring systems installed at three electric utilities are presented.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"96 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122569982","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: 1
FURNAS HVDC system performance and experience 福纳斯高压直流系统的性能和经验
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545930
R.P.P. Santos, CarlosA.S. deAquino, E.C. Neto, S. Alves
{"title":"FURNAS HVDC system performance and experience","authors":"R.P.P. Santos, CarlosA.S. deAquino, E.C. Neto, S. Alves","doi":"10.1109/TDC.1996.545930","DOIUrl":"https://doi.org/10.1109/TDC.1996.545930","url":null,"abstract":"The main performance indexes, mean time between failure, mean time to repair, availability and reliability of Itaipu HVDC transmission system are presented and commented upon. General maintenance aspects with emphasis on flashovers in the bypass breaker, and the valve hall fire detection system are discussed. Operational aspects about high-fire and reduced voltage operation, parallel operation and double monopolar operation are also discussed.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125867113","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: 0
Electrical test methods for nonceramic insulators used for live line replacement 带电线路更换用非陶瓷绝缘子的电气试验方法
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545925
R. Harmon, G. Karady, O. G. Amburgcy
{"title":"Electrical test methods for nonceramic insulators used for live line replacement","authors":"R. Harmon, G. Karady, O. G. Amburgcy","doi":"10.1109/TDC.1996.545925","DOIUrl":"https://doi.org/10.1109/TDC.1996.545925","url":null,"abstract":"The utilities frequently use nonceramic insulators for live line maintenance. These insulators are not always tested electrically during manufacturing. Undetected internal failures in an insulator may endanger workers performing live line maintenance on the insulators. The live line maintenance requires careful testing of each insulator before use. For the selection of the most effective test method, insulators were purposely made with internal flaws and then subjected to megger, hot stick, partial discharge and RIV tests as well as measurement of the total and surface component of leakage current, together with surface heating measurement. The most sensitive method is the RIV test, which identified 6 insulators with flaws. The partial discharge and hot stick tests found 4 insulators with embedded wire. From a practical point of view, the hot stick test seems to be suitable for field test of the insulators.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123610737","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: 15
Calculation of voltage profiles along transmission lines 输电线路电压分布的计算
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545945
L. Marti, H. Dommel
{"title":"Calculation of voltage profiles along transmission lines","authors":"L. Marti, H. Dommel","doi":"10.1109/TDC.1996.545945","DOIUrl":"https://doi.org/10.1109/TDC.1996.545945","url":null,"abstract":"A method for calculating transient voltages and currents at a large number of intermediate points along a transmission line is presented. In the family of EMTP-type programs, these \"profile\" calculations are normally made by explicitly connecting a number of short line sections to create intermediate nodes where voltages and currents can be monitored. This approach is time-consuming, computationally intensive and can be inaccurate if the number of intermediate nodes is large. The model presented allows the accurate evaluation of voltages and currents at an arbitrary number of equally-spaced points along the line. The frequency dependence of the line parameters is taken into account. It is computationally fast and easy to use.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1996-09-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127612852","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: 25
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