发布求助
文献互助 智能选刊 最新文献

IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings最新文献

筛选
英文 中文
Effect of GIC on overcurrent protection for filter banks GIC对滤波器组过流保护的影响
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270551
R. Jayasinghe, P. McLaren, T. Gouldsborough
{"title":"Effect of GIC on overcurrent protection for filter banks","authors":"R. Jayasinghe, P. McLaren, T. Gouldsborough","doi":"10.1109/WESCAN.1993.270551","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270551","url":null,"abstract":"The authors describe a simulation model which can be used to predict voltages and currents during GIC (geomagnetically induced current) events for the 500 kV line and system in the Manitoba Hydro network. The results from the model are shown to be in close agreement with a recently recorded GIC event. The model is then used to predict waveforms for a possible maximum GIC level combined with different power flows. The effect of this event on the currents going through the harmonic filters and the distorted waveforms on typical sequence filters is addressed.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121695514","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: 9
A sensor to characterize particles for the control and monitoring of agricultural or mining processes 用于控制和监测农业或采矿过程的颗粒特征的传感器
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270577
J. Cibere, E. Salt, S. Kumar
{"title":"A sensor to characterize particles for the control and monitoring of agricultural or mining processes","authors":"J. Cibere, E. Salt, S. Kumar","doi":"10.1109/WESCAN.1993.270577","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270577","url":null,"abstract":"The authors introduce a model of a sensor system that can form the basis to measure particle characteristics by analyzing the vibrations caused by their elastic impact upon a thin plate. In this simple sensor model, the impacting particle generates a force pulse that has its shape influenced by the particle radius, density, impact velocity and modulus of elasticity. This force pulse can be estimated by analyzing the plate vibrations as measured by the transducer. A sensor based on this model could provide a number of particle characteristics in real time, and determine size distribution or perform particle discrimination by having a sample of the particle impact upon the sensor. The factors determining the generation of the force pulse and the thin plate's response to this pulse are discussed. A system model and analysis is then reviewed. Finally some considerations in the design of a sensor are examined.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132260176","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
Residential broadband: the telco's future 住宅宽带:电信的未来
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270555
P. Gray
{"title":"Residential broadband: the telco's future","authors":"P. Gray","doi":"10.1109/WESCAN.1993.270555","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270555","url":null,"abstract":"SaskTel's latest residential fiber trial is described. The trial evolved from several smaller trials over the past few years, and includes the use of fiber optic broadband communications and multimedia networks. The trial provides broadband education, entertainment, and other interactive services, plus telemetry and alarms. The project follows SaskTel's long history of utilizing technological development to offer customers new services for the future. The services filled a gap in the education process by networking the home and school. The author expands on the details of the trial, providing information on the system design, available services, and results.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132275777","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
Power system harmonic guidelines and how to evaluate the impact of customer generated harmonics 电力系统谐波准则以及如何评估用户产生的谐波的影响
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270584
V. Sharma, A. C. Thomson
{"title":"Power system harmonic guidelines and how to evaluate the impact of customer generated harmonics","authors":"V. Sharma, A. C. Thomson","doi":"10.1109/WESCAN.1993.270584","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270584","url":null,"abstract":"Saskpower's electric system, like that of many utilities in North America, is increasingly experiencing harmonic distortion problems. SaskPower has adopted harmonic limit standards along the guidelines proposed in the IEEE 519-1981 standard and revised in the IEEE 519-1991 standard. These limits are discussed and a detailed method is given to evaluate a customer's installation. Two example cases are presented including the evaluation of a gas pipeline compressor station installation and an oil field installation.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114547387","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
Parallel processing for power system security assessment with open system techniques 基于开放系统技术的电力系统安全评估并行处理
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270527
R. H. Chen, O. Malik, G. Hope, R. Wheatley
{"title":"Parallel processing for power system security assessment with open system techniques","authors":"R. H. Chen, O. Malik, G. Hope, R. Wheatley","doi":"10.1109/WESCAN.1993.270527","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270527","url":null,"abstract":"An open systems environment for security assessment is described. Multiple contingency cases of power systems are preprocessed by qualitative analysis techniques of artificial intelligence to get the independent double contingency emergency set. The double contingency cases can be assessed in parallel on open workstation systems of different vendors with multiple operating systems. Tests on an example system showed that the proposed methods have satisfactory speed with a convenient and reliable environment.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122912111","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
Supplementary DC control in a two area AC/DC power system 两区交直流电源系统的补充直流控制
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270583
J. M. Castellanos, R. J. Fleming
{"title":"Supplementary DC control in a two area AC/DC power system","authors":"J. M. Castellanos, R. J. Fleming","doi":"10.1109/WESCAN.1993.270583","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270583","url":null,"abstract":"The performance of supervisory control associated with a high voltage two area power system interconnected by HVAC and HVDC tie lines is examined. The system includes supplementary DC control interacting with the conventional AC area controls. Taking advantage of the fast controllability of DC links, supplementary control utilizing DC power modulation could simultaneously improve system dynamic stability, reduce area control error, and reduce inadvertent energy interchange. The supplementary DC power modulation is based on variation of the net power interchange due to step load disturbances in one of the control areas. A linear model was used for the power system to study small changes around a base reference state and only the power-frequency control aspects of the overall power system control problems were considered. Eigenstructure analysis of the state space model of the power system was used to evaluate system stability. Control optimization was achieved by minimization of a performance index which is a function of the area control error (ACE). Computer simulation was used to obtain power system dynamic responses to step load disturbances and to estimate the optimal controller parameters.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117101000","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
Performance of a computer-based two-phase excitation system for a variable-speed dual-excited synchronous generator 基于计算机的变速双激同步发电机两相励磁系统性能研究
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270585
Z. Yonah, A. El-Serafi, A. Krause
{"title":"Performance of a computer-based two-phase excitation system for a variable-speed dual-excited synchronous generator","authors":"Z. Yonah, A. El-Serafi, A. Krause","doi":"10.1109/WESCAN.1993.270585","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270585","url":null,"abstract":"A computer-based two-phase excitation system for a variable-speed dual-excited synchronous generator (DESG) has been implemented. The excitation system has an automatic frequency regulation (AFR) scheme and an automatic voltage regulation (AVR) scheme. The two regulation schemes act on the excitation currents independently to enable the DESG to supply power at constant frequency and constant terminal voltage while its rotor is driven at a variable speed. The authors describe the implementation of the excitation system and its performance when the AFR scheme is set to the AUTO control mode and the AVR scheme is set to the MANUAL control mode. Real-time results are presented showing the performance of the AFR scheme when the DESG is operating under different system disturbances for an operational slip range of +or- 10%. The results show that the excitation system is flexible, fast acting, and accurate. The steady-state error in the regulated output frequency is much less than 0.1%.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127445241","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: 8
A modeling approach for digital protection of synchronous generators 同步发电机数字保护的建模方法
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270524
B. R. Sunga, T. S. Sidhu, M. S. Sachdev
{"title":"A modeling approach for digital protection of synchronous generators","authors":"B. R. Sunga, T. S. Sidhu, M. S. Sachdev","doi":"10.1109/WESCAN.1993.270524","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270524","url":null,"abstract":"The authors describe the development of an algorithm for detecting internal faults in the windings of synchronous generators. The fault detection algorithm is based on the positive- and negative-sequence models of the synchronous machine. The algorithm uses voltages and currents at the generator terminals to detect the faults. The performance of the proposed algorithm was tested using data recorded from a laboratory generator which was subjected to a variety of internal and external faults. The results indicate that the algorithm effectively detects winding faults.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122144050","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 direct pi /4 DQPSK modulator with memory based prefiltering and predistortion 一种基于内存的预滤波和预失真的pi /4直接DQPSK调制器
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270576
S. Kumar, T. Danshin
{"title":"A direct pi /4 DQPSK modulator with memory based prefiltering and predistortion","authors":"S. Kumar, T. Danshin","doi":"10.1109/WESCAN.1993.270576","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270576","url":null,"abstract":"A direct pi /4 differential quadrature phase shift keying (DQPSK) 48.6-kb/s 824-849-MHz modulator for North American digital cellular applications is described. Square root raised cosine roll-off prefiltering with a roll-off factor 0.35 is implemented using digital memory circuits. The same memory circuits are used to incorporate predistortion for the nonlinearity of the biphase attenuators. Although predistortion for the modulator only has been incorporated, the same circuit can be used to predistort for power amplifier nonlinearities. The modulator is suitable for silicon monolithic microwave integrated circuit (MMIC) implementation using digital and memory circuits on the same chip. The measured results are presented.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133415566","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
Rough sets approach to system modelling and control algorithm acquisition 粗糙集方法的系统建模与控制算法获取
IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings Pub Date : 1993-05-17 DOI: 10.1109/WESCAN.1993.270568
Wojciech Ziarko, J. Katzberg
{"title":"Rough sets approach to system modelling and control algorithm acquisition","authors":"Wojciech Ziarko, J. Katzberg","doi":"10.1109/WESCAN.1993.270568","DOIUrl":"https://doi.org/10.1109/WESCAN.1993.270568","url":null,"abstract":"A method of producing usable system models or control algorithms from tables of system data is presented. The system variable data are broken into a limited number of meaningful ranges. The tables of data are then reduced to a minimum set of decision rules for predicting the next state, measurement or control action. The method is developed in a mathematically precise form and examples are given.<<ETX>>","PeriodicalId":146674,"journal":{"name":"IEEE WESCANEX 93 Communications, Computers and Power in the Modern Environment - Conference Proceedings","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1993-05-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131490491","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: 16
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