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

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Object-oriented development of software systems for power system simulations 面向对象的电力系统仿真软件系统开发
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.547578
Jun Zhu, D.L. Lubkeman
{"title":"Object-oriented development of software systems for power system simulations","authors":"Jun Zhu, D.L. Lubkeman","doi":"10.1109/TDC.1996.547578","DOIUrl":"https://doi.org/10.1109/TDC.1996.547578","url":null,"abstract":"The software systems developed for power system simulations have evolved into such complicated systems that the applied design practices appear inadequate to support further enhancement and maintenance. The major obstacles stem directly or indirectly from the conventional function-oriented software development methodologies. To overcome the drawbacks of these methodologies, this paper proposes applying object-oriented technology for power system software development. As an illustration of this approach, the object modeling technique (OMT), an object-oriented software development methodology, is used to develop a distribution analysis system. With this technique, a generic distribution circuit object model (DCOM) is designed based on the real-world concepts and implemented with the object-oriented programming techniques. The developed DCOM is capable of supporting a wide range of distribution applications and allowing modification and maintenance over a long period of time. The performed case study has demonstrated that object-oriented technology, when applied to each stage of software development, can help achieve complicated tasks in power system simulations.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"67 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":"130696850","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: 60
Design and commissioning of a 5 MVA, 2.5 MWh battery energy storage system 5mva、2.5 MWh电池储能系统设计与调试
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545957
N. Miller, R. S. Zrebiec, G. Hunt, R.W. Deimerico
{"title":"Design and commissioning of a 5 MVA, 2.5 MWh battery energy storage system","authors":"N. Miller, R. S. Zrebiec, G. Hunt, R.W. Deimerico","doi":"10.1109/TDC.1996.545957","DOIUrl":"https://doi.org/10.1109/TDC.1996.545957","url":null,"abstract":"Momentary and sustained power interruptions are some of the most difficult and important power quality problems facing many industrial and commercial users. Battery energy storage systems (BESS) have the potential to provide versatile solutions to this problem for utility, industrial and commercial applications. This paper describes the design and commissioning of a 5 MVA, 2.5 MWh BESS which is now in operation at the GNB Battery Recycling Plant in Vernon, California. The BESS at Vernon provides the required power combined with both voltage and frequency control to allow the plant to tolerate disconnection from the utility grid without suffering unacceptable impacts on critical loads.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"25 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":"126551009","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: 64
World-wide long-term experiences with heat-shrinkable splice concepts 全球热收缩接头概念的长期经验
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545963
W. Haverkamp, P. Lyons
{"title":"World-wide long-term experiences with heat-shrinkable splice concepts","authors":"W. Haverkamp, P. Lyons","doi":"10.1109/TDC.1996.545963","DOIUrl":"https://doi.org/10.1109/TDC.1996.545963","url":null,"abstract":"In the thirty years since the introduction of pre-engineered cable accessories, advancements in materials science have produced the familiar heat-shrink accessories. Further enhancements in materials science technologies have lead to a design concept, which pushes the state-of-the-art for pre-engineered cable accessories to a new level, where one splice technology (adopting various cable technologies) simplifies the installation procedure. A constant, simple installation procedure, regardless of the cable type, provides an important advantage to the installer. This paper discusses the capability of the design concepts and the long-term lab and field experiences with the basic modules.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"10 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":"132631658","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
Three-Dimensional Magnetic Field Analysis of Electrodes for VCBs vcb电极的三维磁场分析
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.547585
K. Nitta, K. Watanabe, K. Kagenaga, T. Mori, E. Kaneko, H. Somei, H. Takahashi
{"title":"Three-Dimensional Magnetic Field Analysis of Electrodes for VCBs","authors":"K. Nitta, K. Watanabe, K. Kagenaga, T. Mori, E. Kaneko, H. Somei, H. Takahashi","doi":"10.1109/TDC.1996.547585","DOIUrl":"https://doi.org/10.1109/TDC.1996.547585","url":null,"abstract":"This paper describes the application of three-dimensional magnetic field analysis, including eddy current effects on the axial magnetic field electrodes. The accuracy of the analysis is verified with both basic and full models of the electrodes. The analytical results were compared with the measured values obtained by the Hall sensor system. The effect of the electrode slit length and the electrical conductivity of the contact on the magnetic flux density and phase difference was analyzed with the full model. The magnetic field in the gap was simulated when the arc ignites between the electrodes. These results demonstrated that the magnetic design of the electrodes can be carried out on an engineering work-station.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"43 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":"133146671","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: 24
New Oil Stop Contains High Pressure of PILC Cables 新的油闸包含高压的PILC电缆
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.547583
W. Taylor, G. D. Hendley
{"title":"New Oil Stop Contains High Pressure of PILC Cables","authors":"W. Taylor, G. D. Hendley","doi":"10.1109/TDC.1996.547583","DOIUrl":"https://doi.org/10.1109/TDC.1996.547583","url":null,"abstract":"Terminations and transition splices on paper insulated lead covered (PILC) cable have traditionally been time consuming, craft sensitive processes. Containment of the impregnating oil within the paper insulation is necessary to extend the life of the PILC cable and to prevent degradation of modern materials used in splicing and terminating solid dielectric cables. While pressures inside PILC cables have been commonly assumed to be less than 15 psi, recent tests have shown that pressures can range from a vacuum to in excess of 100 psi. A new method of oil sealing has been devised using an elastomeric material and a high-strength restricting tape that will withstand these pressure extremes and allow PILC cables to be terminated or spliced with devices designed for solid dielectric cable.","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":"133785412","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
Enhanced analytical design method for overhead line conductors in nonlevel spans 非水平跨架空线导线的改进分析设计方法
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545960
Y. Motlis, L. Keselman
{"title":"Enhanced analytical design method for overhead line conductors in nonlevel spans","authors":"Y. Motlis, L. Keselman","doi":"10.1109/TDC.1996.545960","DOIUrl":"https://doi.org/10.1109/TDC.1996.545960","url":null,"abstract":"This paper presents a practical design method to analyze line conductors deflected by wind in inclined spans. Comparison of the results of the traditional approach (in a vertical plane) and the three-dimensional approach proposed in this paper shows that the shape of the catenary deflected by wind in a nonlevel span may differ significantly from the shape in a vertical plane due to the displacement of its \"zero\" point. Determination of the true location of the \"zero\" point in nonlevel spans is very important to determine the accurate clearances to the deflected conductor, the tension at \"zero\" point, and the three components of line tension at the conductor attachment point. Representing conductor coordinates, loads, and tensions as vectors and their components (projections) allows analysis of the line conductor in any position in space and for any direction of wind or combined \"wind plus ice\" loadings. This method is most useful when applied to conductors passing through mountainous terrain where determination of the actual state of line conductors using conventional methods is either impossible or impracticable.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"111 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":"130302160","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
Laboratory measurement of the power dissipation characteristics of aeolian vibration dampers 风成阻尼器功率耗散特性的实验室测量
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545959
J. T. Schmidt
{"title":"Laboratory measurement of the power dissipation characteristics of aeolian vibration dampers","authors":"J. T. Schmidt","doi":"10.1109/TDC.1996.545959","DOIUrl":"https://doi.org/10.1109/TDC.1996.545959","url":null,"abstract":"The two basic methodologies for the laboratory testing of aeolian vibration dampers described in IEEE Std 664-1993 are reviewed under the aspect of mechanical impedance relationships. The results of both methodologies-test of a vibration damper using a conductor span in resonant vibration and forced response test on a shaker-otherwise not comparable can then be set in relation to each other. Experimental results are presented to give evidence to that approach. Moreover, an experimental method is described for determining power flow on a laboratory conductor span. The vibration amplitude is measured at two arbitrary locations along the span. By digital signal processing it is possible to determine separately the amplitudes of the waves travelling forward and backward along the span. With both amplitudes known the net power flow can be computed.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"25 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":"132110192","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: 19
Investigation of PD pulse propagation characteristics in GIS GIS中PD脉冲传播特性研究
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545936
K. Mizuno, A. Ogawa, K. Nojima, H. Murase, H. Koyama, S. Wakabayashi, T. Sakakibara
{"title":"Investigation of PD pulse propagation characteristics in GIS","authors":"K. Mizuno, A. Ogawa, K. Nojima, H. Murase, H. Koyama, S. Wakabayashi, T. Sakakibara","doi":"10.1109/TDC.1996.545936","DOIUrl":"https://doi.org/10.1109/TDC.1996.545936","url":null,"abstract":"Concentrating on the TEM mode, damping characteristics of partial discharge (PD) pulses propagating through each GIS (gas insulated substation) component were investigated, as a result, it was discovered that frequency components above 500 MHz were damped by spacers, T-shape branches, and L-bends. Quantitative studies were undertaken on the frequency dependency of this damping characteristics. Then the equivalent circuits for analyzing the propagation characteristic of PD pulses were proposed. Furthermore, the validity of concentrating on the TEM mode was denoted by tests at a substation in service.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"76 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":"116503464","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
Distribution underground cable evaluation 配电地下电缆评估
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545939
C. L. Rudasill, D. Ward
{"title":"Distribution underground cable evaluation","authors":"C. L. Rudasill, D. Ward","doi":"10.1109/TDC.1996.545939","DOIUrl":"https://doi.org/10.1109/TDC.1996.545939","url":null,"abstract":"The evaluation of the total life cycle costs of underground cable alternatives is an important analysis performed by distribution engineers. While it is a straightforward application of engineering economics, it must avoid significant distortions and deal effectively with uncertainty. The unique procedure described uses a simple, yet rigorous, approach for addressing future replacement costs and avoiding length of study period distortion when different lives are being considered. In addition, a concise and informative way of dealing with the major uncertainty-that of projected cable life-is included.","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":"121892506","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: 5
Distribution transformer loading evaluation based on load profiles measurements 基于负荷剖面测量的配电变压器负荷评估
Proceedings of 1996 Transmission and Distribution Conference and Exposition Pub Date : 1996-09-15 DOI: 10.1109/TDC.1996.545908
J. Jardini, C. Tahan, S. Ahn, E. L. Ferrari
{"title":"Distribution transformer loading evaluation based on load profiles measurements","authors":"J. Jardini, C. Tahan, S. Ahn, E. L. Ferrari","doi":"10.1109/TDC.1996.545908","DOIUrl":"https://doi.org/10.1109/TDC.1996.545908","url":null,"abstract":"A methodology for residential distribution transformer loading evaluation is presented by the authors. The daily load profiles are used to determine the expected loss of life. Different calculation alternatives are used and compared. A methodology that includes the load curve shape obtained by measurements is proposed.","PeriodicalId":105076,"journal":{"name":"Proceedings of 1996 Transmission and Distribution Conference and Exposition","volume":"811 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":"123923304","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: 35
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