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Conference Record Industrial and Commercial Power Systems Technical Conference 1993最新文献

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Early streamer emission enhanced air terminal performance and zone of protection 早期飘带发射增强了终端性能和保护区域
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290591
K. P. Heary, A. Chaberski, F. Richens, J. H. Moran
{"title":"Early streamer emission enhanced air terminal performance and zone of protection","authors":"K. P. Heary, A. Chaberski, F. Richens, J. H. Moran","doi":"10.1109/ICPS.1993.290591","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290591","url":null,"abstract":"An experimental study of the performance of ionizing air terminals versus nonionizing air terminals for lightning protection is reported. Radioactive sources are used to obtain ionization of the air surrounding the tip of the air terminals. Ionization due to field amplification by the geometrical shape is included. All the tests are performed on a comparison basis in which an enhanced air terminal is compared directly with a nonenhanced air terminal of the same geometry, or against a standard rod (Franklin air terminal). The test results indicate a substantial, superiority for the enhanced air terminal. Zone of protection is also defined, and is based on an electrogeometric model, including enhanced flexible dynamic length.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114600090","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: 7
DC control battery system protection and coordination 直流控制蓄电池系统保护与协调
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290573
R.L. Smith
{"title":"DC control battery system protection and coordination","authors":"R.L. Smith","doi":"10.1109/ICPS.1993.290573","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290573","url":null,"abstract":"Battery system failure jeopardizes a power system by eliminating the DC control power source for AC system circuit breakers and protective devices. The protection of control battery system components including the battery, battery charger and individual circuits is reviewed. Optimum battery system protective device coordination is discussed.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124025214","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
The impact of the revised IEEE Std. 519 on power systems evaluated using the 1981 standard 修订后的IEEE标准519对使用1981年标准评估的电力系统的影响
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290581
J. Toth
{"title":"The impact of the revised IEEE Std. 519 on power systems evaluated using the 1981 standard","authors":"J. Toth","doi":"10.1109/ICPS.1993.290581","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290581","url":null,"abstract":"The author contends that the proposed IEEE Std 519 has more constraints than its 1981 predecessor. The new standard has distortion limits for power producers. The table has been expanded to list three entries for maximum individual harmonic voltage distortion based on the bus voltage at the point of common coupling. Current distortion limits are given. The table lists twenty-five entries for maximum individual current distortion and five entries for total demand distortion. These distortion limits are based on the short circuit current at the point of common coupling and the maximum demand load current. An analysis of a power system evaluated using the 1981 standard is made based on the proposed standard.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129985499","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
Simplified predetermination of line current harmonics emitted by controlled six-pulse AC/DC converters 简化了受控六脉冲AC/DC变换器发出的线路电流谐波的预判定
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290582
M. Grotzbach, W. Dirnberger, R. Redmann
{"title":"Simplified predetermination of line current harmonics emitted by controlled six-pulse AC/DC converters","authors":"M. Grotzbach, W. Dirnberger, R. Redmann","doi":"10.1109/ICPS.1993.290582","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290582","url":null,"abstract":"Predetermining line current harmonics of controlled AC/DC converters, the effects of commutation and DC ripple must be frequently taken into account. Based on a suitable normalization, the dominant parameters determine that the current harmonics are the line and DC side reactances, respectively, and the DC voltage. This forms the basis for a systematic comparison of the accuracy of analytical formulas, describing the commutation or the DC ripple effect only. Using these results, the validity ranges of different approximation formulas can be estimated and the most important question answered concerning the proof of the conventional assumption of a 'sufficiently' smoothed DC current. In order to predetermine line current harmonics as easily as possible, the most effective formula can be obtained from corresponding decision areas. The allowable error is restricted to 2% of the fundamental, confirmed by comparing the results of digital simulation studies.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122134197","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
Short-circuit analysis in industrial and commercial power systems: the "characteristic" currents approach 工业和商业电力系统中的短路分析:“特征”电流方法
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290576
G. Parise
{"title":"Short-circuit analysis in industrial and commercial power systems: the \"characteristic\" currents approach","authors":"G. Parise","doi":"10.1109/ICPS.1993.290576","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290576","url":null,"abstract":"For short-circuit analysis in industrial and commercial power systems, a new approach of the ohmic method in such a form as to facilitate, as far as possible, its use and the realization of its evaluation is suggested. The 'characteristic' current method, by replacing the impedance of each equipment with the corresponding value of the 'characteristic' current, permits the application of the impedance properties to the inverse of the current values, either in meshed or nonmeshed networks. In order to achieve the correct design, rating and protection coordination of the whole power system, it is necessary to know and calculate step by step the values of short circuit current for each system component, from the utility or local generating connection point until the branch-circuits and the utilization equipments. The proposed approach assumes the above mentioned short-circuit current directly as calculation and comparison parameters. With the 'characteristic' currents as parameters the short-circuit analysis of substantial radial systems is made easier and a better matching of power system design requirements is permitted.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130241979","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: 10
Computer-aided selection and verification of medium and high voltage circuit breakers 中高压断路器的计算机辅助选择与验证
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290577
A. J. Rodolakis
{"title":"Computer-aided selection and verification of medium and high voltage circuit breakers","authors":"A. J. Rodolakis","doi":"10.1109/ICPS.1993.290577","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290577","url":null,"abstract":"Procedures governing medium and high voltage breaker applications, although conceptually tractable, tend to be repetitive for large systems. The author describes how a computer can be used as an efficient tool to address these concerns. Emphasis is placed on how the computer can be used to interface the short circuit study results to the breaker modules, on how breaker adequacy evaluation can be computerized, and on how these calculations can be extended to yield automated breaker selection according to user-defined criteria and breaker rating structures. The author discusses only North American breaker application procedures and rating structures as tabulated in the ANSI standards, and addresses only short circuit current interrupting requirements.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131537288","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
Voltage sag analysis case studies 电压暂降分析案例研究
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290587
J. Lamoree, D. Mueller, P. Vinett, W. Jones, M. Samotyj
{"title":"Voltage sag analysis case studies","authors":"J. Lamoree, D. Mueller, P. Vinett, W. Jones, M. Samotyj","doi":"10.1109/ICPS.1993.290587","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290587","url":null,"abstract":"The results from a number of different voltage sag investigations are summarized. These investigations involve characterizing the voltage sag performance at a customer facility and evaluating equipment sensitivity to different voltage sag magnitudes and durations. Possible solutions to voltage sag sensitivity problems are described.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121941655","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: 149
Current injection method to eliminate harmonics in AC power systems 交流电力系统中消除谐波的电流注入方法
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290583
Abdul H. Samra, A. Teshome
{"title":"Current injection method to eliminate harmonics in AC power systems","authors":"Abdul H. Samra, A. Teshome","doi":"10.1109/ICPS.1993.290583","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290583","url":null,"abstract":"A method is proposed to eliminate AC harmonic currents by injecting equal-but-opposite harmonic compensating currents. This method is applicable to any type of load considered as a harmonic source. A system involving a hardware interface, a PC, and advanced software to measure, analyze, and report the condition of harmonics on the power system is described. This system is used to generate all the necessary harmonic currents for compensation. Digital simulation and experimental results from single- and three-phase AC/DC converters are shown to verify the effectiveness of this technique.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117105141","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
Lightning protection systems for structures as covered by NFPA-780 "lightning protection code" NFPA-780《防雷规范》规定的建筑物防雷系统
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290592
H.G. Vansickle
{"title":"Lightning protection systems for structures as covered by NFPA-780 \"lightning protection code\"","authors":"H.G. Vansickle","doi":"10.1109/ICPS.1993.290592","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290592","url":null,"abstract":"The code for lightning protection NFPA-780 has gone through a number of revisions since 1980 when the 'Zone of Protection' or 150 ft. final striking distance was introduced. An analysis of indiscriminate bonding of metal objects to the lightning protection system produced a new section on treatment of metal bodies. The use of a ground loop interconnecting all ground media has been added as a requirement for structures over 60 ft. in height. These changes help greatly in application of lightning protection systems to modern structures.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"104 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117184988","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
Probabilistic design of high quality power supply photovoltaic systems 高质量光伏供电系统的概率设计
Conference Record Industrial and Commercial Power Systems Technical Conference 1993 Pub Date : 1993-05-02 DOI: 10.1109/ICPS.1993.290579
U. Grasselli
{"title":"Probabilistic design of high quality power supply photovoltaic systems","authors":"U. Grasselli","doi":"10.1109/ICPS.1993.290579","DOIUrl":"https://doi.org/10.1109/ICPS.1993.290579","url":null,"abstract":"The stand-alone application of photovoltaic (PV) systems, at current industrial production technological levels, could provide a viable solution to the problem of producing electricity for users located far away from power distribution systems. The author discusses the criteria for calculating the sizes of PV peak power and energy storage of a highly reliable power supply for special loads, with the aim of reaching the desired availability level. Adopting the criteria of loss of load probability (LOLP), the sizes of PV peak power and energy storage of the system are calculated in two steps. An initial provisional calculation is made, followed by a simulation of the most critical conditions, as a sequence of days with a minimum level of irradiation calculated probabilistically. A simple iterative process is adopted to evaluate performance.<<ETX>>","PeriodicalId":327874,"journal":{"name":"Conference Record Industrial and Commercial Power Systems Technical Conference 1993","volume":"371 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123485889","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: 4
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