发布求助
文献互助 智能选刊 最新文献

Proceedings of the Twenty-Second Annual North American Power Symposium最新文献

筛选
英文 中文
The failure rates of underground distribution system components 地下配电系统部件故障率
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151385
W. Horton, S. Goldberg, V. Backman
{"title":"The failure rates of underground distribution system components","authors":"W. Horton, S. Goldberg, V. Backman","doi":"10.1109/NAPS.1990.151385","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151385","url":null,"abstract":"The authors provide estimates of the failure rates of underground distribution system components. The estimates are based on information collected from a number of utility sources throughout the United States of America. They represent considerable field experiences of these sources over time spans on the order of 10 years. These data have been analyzed to produce comprehensive estimates of failure rates of underground components. The component failure rate estimates presented may be used by distribution engineers in assessing the reliability of distribution feeders. Computer programs have been developed which utilize these failure rates to predict reliability indices (for example, feeder average interruption frequency index and feeder average interruption duration index) for utility feeders.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130396686","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
An algorithm of the harmonics on traction power system of the electrified railway 电气化铁路牵引电力系统谐波的一种算法
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151358
Pan Yinxuan, Sun Shugin, L. Chunhua
{"title":"An algorithm of the harmonics on traction power system of the electrified railway","authors":"Pan Yinxuan, Sun Shugin, L. Chunhua","doi":"10.1109/NAPS.1990.151358","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151358","url":null,"abstract":"The authors explore harmonic calculations for Chinese electrified railway systems. One of the branches of the electrified railway power system in operation was emulated and calculated with special purpose software for analyzing harmonic currents. The multiple harmonic sources and the asymmetry of the system make the harmonic analysis complicated. The three-phase power system is converted into a single-phase network with mutual coupling. A simple algorithm for calculating harmonics with node voltage equations is provided, which simplifies the calculation of harmonics of a complicated system with multiple harmonic sources and asymmetrical networks.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130848211","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
Least square approach for voltage control optimization 电压控制优化的最小二乘方法
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151382
J. Momoh
{"title":"Least square approach for voltage control optimization","authors":"J. Momoh","doi":"10.1109/NAPS.1990.151382","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151382","url":null,"abstract":"The author describes a procedure for determination of optimum voltage control using the quadratic optimization technique based on the least squares method. The approach is capable of handling generalized optimization problems with the number of variables greater/equal, less than number of constraints. These constraints can be linear or nonlinear but can be modeled as quadratic forms of voltage. Although the power system models are nonconvex, nonconcave, and nonlinear, the optimization scheme determines the feasible and global optimum points. The method is based on the sensitivity method with first order approximation of Taylor series to achieve the necessary and sufficient conditions extended from Kuhn Tucker conditions. To satisfy the generalized optimization scheme, the method is specialized to use a least squares method for the determination of unknown quantities.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130644245","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
Improved control of capacitor bank switching to minimize distribution systems losses 改进电容器组切换控制，使配电系统损失最小化
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151388
B.W. Coughlan, D. Lubkeman, J. Sutton
{"title":"Improved control of capacitor bank switching to minimize distribution systems losses","authors":"B.W. Coughlan, D. Lubkeman, J. Sutton","doi":"10.1109/NAPS.1990.151388","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151388","url":null,"abstract":"The authors review the problem of controlling the switching of capacitor banks to minimize losses on distribution systems. A novel class of controls is available that allows capacitor switching to much more closely follow the actual loading on the distribution feeder. This allows for much better control of reactive loading throughout the distribution system, reduced line losses, improved voltage regulation, and reduced facility loading. The operating characteristics and performance of several of the controls are reviewed and compared. To effectively use the controls, distribution systems engineers must have a methodology to determine appropriate switching set points. The development of an appropriate methodology and its implementation in the form of a computer program called VDXTCAP are described.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123032876","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
Magnetic fields in a Faraday-rotator underneath a high-voltage transmission-line conductor 高压传输线导体下的法拉第旋转器中的磁场
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151376
M. Abdel-Salam, D. Wiitanen, M. Abd-Elsalam
{"title":"Magnetic fields in a Faraday-rotator underneath a high-voltage transmission-line conductor","authors":"M. Abdel-Salam, D. Wiitanen, M. Abd-Elsalam","doi":"10.1109/NAPS.1990.151376","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151376","url":null,"abstract":"The progress of a research program aimed at measuring the line current of a high-voltage transmission-line conductor is reported. An optical technique is proposed based on the Faraday effect in an appropriate sensor (Faraday rotator) placed in the magnetic field of the conductor. A laser beam is the only connection between this sensor and the measuring instruments placed at ground potential. A numerical method for the analysis of the magnetic field is presented, based on a simulation technique. The simulation technique is used to represent the current carrying conductor, earth return current and Faraday rotator by sets of fictitious current filaments which satisfy the boundary conditions of the system.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121023514","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
Zero-sequence impedance of overhead transmission lines with discontinuous ground wire 接地线不连续架空输电线路的零序阻抗
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151371
B. Thapar, V. Gerez, A. Balakrishnan
{"title":"Zero-sequence impedance of overhead transmission lines with discontinuous ground wire","authors":"B. Thapar, V. Gerez, A. Balakrishnan","doi":"10.1109/NAPS.1990.151371","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151371","url":null,"abstract":"The authors give a method to calculate the zero-sequence impedance of a transmission line having ground wires that are not continuous or are not connected to the station grounds at the end of the line. The calculated values are compared with the measured zero-sequence impedance of a line. The authors observe that for transmission lines having discontinuous ground wires, the actual zero-sequence impedance is different from the zero-sequence impedance of the line calculated with the classical methods and considering either no ground wire or continuous ground wire. This difference is significant if the ground wire is of ACSR conductor. The method given for calculating the zero-sequence impedance of a transmission line with discontinuous ground wire gives more accurate results, which are close to the measured values.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130635697","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
An optimal control strategy for power distribution system operation 配电系统运行的最优控制策略
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151387
A. Noureddine, A. Alouani, A. Chandrasekaran
{"title":"An optimal control strategy for power distribution system operation","authors":"A. Noureddine, A. Alouani, A. Chandrasekaran","doi":"10.1109/NAPS.1990.151387","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151387","url":null,"abstract":"An optimal control strategy for the operation of a power distribution system is proposed. The objective is to meet all load demands while maintaining a desired profile and achieving minimization of power losses in the distribution system. A set of control objects of the distribution system consisting of security, operational and economical control laws (constraints) is integrated into the strategy formulation. The problem is formulated at the subnetwork level where local optimal control strategies can be implemented. An example system is solved to illustrate the procedure.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123204725","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
A fast and reliable decoupled load flow method in rectangular coordinates 直角坐标系下快速可靠的解耦潮流方法
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151360
L. Vargas, V. Quintana
{"title":"A fast and reliable decoupled load flow method in rectangular coordinates","authors":"L. Vargas, V. Quintana","doi":"10.1109/NAPS.1990.151360","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151360","url":null,"abstract":"The authors present a novel version of the fast decoupled load flow method in rectangular coordinates. The decoupling procedure uses a flat start and is based on the second-order load flow method, which is decoupled by suitable manipulations. There are no simplifications in the derivation of the method and the resulting set of equations has the same accuracy as the original expressions. To evaluate the performance and reliability of this method, a comparison with the Newton-Raphson fast decoupled load flow and second-order load flow methods is presented and discussed. Numerical results are obtained on a Micro VAX computer. Simulations are performed on the IEEE-118 bus system and IEEE-24 bus reliability test system. The tests consider several ill-conditioned cases with high R/X ratio and different load conditions. The method exhibits good convergence behavior. In most of the cases its running time is comparable to that of the standard fast decoupled load flow.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125699334","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
Simulation of induction machine starting transients using state variable techniques 用状态变量技术模拟感应电机起动瞬态
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151395
S. Ertem
{"title":"Simulation of induction machine starting transients using state variable techniques","authors":"S. Ertem","doi":"10.1109/NAPS.1990.151395","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151395","url":null,"abstract":"A simple, fast, and accurate algorithm for determining induction machine starting transients is presented. The fifth-order system of differential equations is divided into three lower-order subsystems. An iterative solution technique utilizing discrete time linear state-variable techniques is used for solution of two linear subsystems instead of the commonly used inefficient numerical techniques. The solution of the third subsystem is obtained by using well-known numerical techniques. The accuracy of the algorithm is comparable to that of the fifth-order model, and the CPU time requirements are as little as 31% of that required by the fifth-order model.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"218 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134312991","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
Building the world's largest Tesla coil-history and theory 建造世界上最大的特斯拉线圈——历史和理论
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151364
G. L. Johnson
{"title":"Building the world's largest Tesla coil-history and theory","authors":"G. L. Johnson","doi":"10.1109/NAPS.1990.151364","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151364","url":null,"abstract":"A plan to design, build, and test the world's largest Tesla coil power transformer is discussed. The analysis will be performed by using the program TCTUTOR by J. Corum et al. (1988) with modifications. Power MOSFETs will be used to excite the coil. Hall effect sensors will be used to measure current waveforms and electric field sensors will be used to monitor voltage waveforms. Optical fibers will be used to transmit control signals and measured quantities to and from the Tesla coil. Tesla coil theory is discussed. Open questions are considered. The current status of the project is described.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1990-10-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132869069","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: 11
首页 上一页 下一页 尾页
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整，为了账户安全，请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
请完成安全验证×
相关产品
×
本文献相关产品
联系我们：info@booksci.cn Book学术提供免费学术资源搜索服务，方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号：604180095
Book学术官方微信