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
Single phase induction motor drive scheme for pump irrigation using photovoltaic source 一种利用光伏源进行水泵灌溉的单相感应电机驱动方案
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151396
R. M. Hilloowala, A. Sharaf
{"title":"Single phase induction motor drive scheme for pump irrigation using photovoltaic source","authors":"R. M. Hilloowala, A. Sharaf","doi":"10.1109/NAPS.1990.151396","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151396","url":null,"abstract":"The authors present the modeling and simulation of a solar powered induction motor drive for pump irrigation. The model can be used to relate input quantities like solar array voltage and current to outputs like speed and torque. The simulation of the unified system is presented and the results can be used to select the ratings of the various components. Using a harmonic elimination technique, the inverter firing signals are so designed that lower order harmonics are eliminated. This helps in reducing unnecessary heating created by lower order harmonic currents and allows better utilization of the induction motor. Also, a simple technique to maximize the power output of solar array by modulating the duty ratio of the chopper is presented.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"24 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":"130059240","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
Effect of geomagnetic-induced-current on power grids and communication systems: a review 地磁感应电流对电网和通信系统的影响综述
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151378
J. Kolawole, S. Mulukulta, D. Glover
{"title":"Effect of geomagnetic-induced-current on power grids and communication systems: a review","authors":"J. Kolawole, S. Mulukulta, D. Glover","doi":"10.1109/NAPS.1990.151378","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151378","url":null,"abstract":"The authors provide an up-to-date engineering review on the effect of geomagnetic-induced-current (GIC) on power systems and apparatus. The topics dealt with are effects on power systems; static VAr compensation and harmonic distortion; mitigation of GIC in power systems; measurements and instrumentation; effect of GIC on communication systems; and strategies for developing immunity from geomagnetic disturbances in power systems and apparatus. Future research trends are considered.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"10 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":"131283731","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
A predictor corrector algorithm in the parallel solution of power system dynamics 电力系统动力学并联求解中的预测校正算法
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151363
M. Pai, S. Ghoshal, A. Kulkarni
{"title":"A predictor corrector algorithm in the parallel solution of power system dynamics","authors":"M. Pai, S. Ghoshal, A. Kulkarni","doi":"10.1109/NAPS.1990.151363","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151363","url":null,"abstract":"While software is being developed for automatically detecting parallelism in an otherwise serial code, concurrent research in developing parallel numerical algorithms is also useful. The authors compare the speedups obtained using both these approaches in the dynamic simulation of a power system. A sequential algorithm that can be automatically converted to execute in parallel is developed. An explicitly parallel algorithm for simulating the power system is also adapted. Both are multistep predictor corrector algorithms and are implemented on a Cray-2 with four processors. While the two speedups are comparable, it is believed that continued research in numerical algorithms and their practical implementation is warranted.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"447 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":"122599561","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
Corrosion and steel grounding 腐蚀和钢接地
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151368
P. K. Sen, N.K. Mudarres
{"title":"Corrosion and steel grounding","authors":"P. K. Sen, N.K. Mudarres","doi":"10.1109/NAPS.1990.151368","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151368","url":null,"abstract":"Based on the National Bureau of Standards statistical data on the corrosion of steel (M. Romanoff, 1957), an equation is developed to estimate the corrosion rate of underground steel that varies with soil resistivity, pH value, moisture and aeration. This formula, together with IEEE Standard 80-1986, is used in the design of steel grounding. formulae are also discussed on how to design proper cathodic protection methods to minimize corrosion of steel grounding. The typical corrosion rate of steel is 5-7 mils/year. A numerical example is discussed to enhance the understanding of steel grounding design for high voltage AC substations.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"39 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":"125100594","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: 6
On underfrequency load shedding schemes 低频减载方案
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151369
M. Etezadi-Amoli
{"title":"On underfrequency load shedding schemes","authors":"M. Etezadi-Amoli","doi":"10.1109/NAPS.1990.151369","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151369","url":null,"abstract":"The author discusses some of the factors which must be considered for testing an underfrequency load shedding scheme. Fault simulation and system separation due to faults or out-of-step conditions must be represented. This is necessary for analysis of generator behavior within the system during the abnormal conditions. The program must be capable of simulating the behavior of distance and out-of-step relays under abnormal operations. Characteristics of these relays are briefly described. It is shown that the traditional approximate models may not always be capable of predicting the system behavior for a given load shedding scheme and cascading system outages may result through undesired tripping of the generator underfrequency relays. Several factors which influence the behavior of a power system under a given underfrequency load shedding scheme are described.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"32 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":"122800160","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
Robust design of dynamic compensator for HV AC power system 高压交流电力系统动态补偿器的鲁棒设计
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151349
M. A. Choudry, K. Lateef
{"title":"Robust design of dynamic compensator for HV AC power system","authors":"M. A. Choudry, K. Lateef","doi":"10.1109/NAPS.1990.151349","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151349","url":null,"abstract":"The authors present a method to design a robust dynamic compensator for reactive power modulation to improve the dynamic performance of high voltage AC power systems. The effect of nonlinear load on parameters of a dynamic compensator for reactive power modulation using a static VAr compensator (SVC) is investigated. The values of gain and zero of the dynamic compensator, which assign the same complex-conjugate eigenvalues corresponding to electromechanical oscillations, are plotted at different values of load characteristics. The robust dynamic compensator is designed using closed-loop eigenvalue sensitivity with respect to the load characteristics. The rotor speed deviation of the synchronous generator is used as an input signal to the dynamic compensator. The output of the dynamic compensator is used as a stabilizing signal to the SVC. Eigenvalue analysis and simulation results show that a dynamic compensator designed at a constant impedance load model may lead to system instability at a constant active power load. However a robust dynamic compensator improves the system response over a wide range of load characteristics.<<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":"130171083","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
A pattern analysis approach for topology determination, bad data correction and missing measurement estimation in power systems 一种用于电力系统拓扑确定、不良数据校正和缺失测量估计的模式分析方法
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1990-10-15 DOI: 10.1109/NAPS.1990.151390
A. P. Alves da Silva, V. Quintana, G. Pang
{"title":"A pattern analysis approach for topology determination, bad data correction and missing measurement estimation in power systems","authors":"A. P. Alves da Silva, V. Quintana, G. Pang","doi":"10.1109/NAPS.1990.151390","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151390","url":null,"abstract":"The authors propose a novel methodology for the combined solution of the topological identification, observability analysis and bad data processing problems in power systems. The idea is to provide, in a very fast way, a reliable input database for the state estimator, without interacting with it. The solution is based on a pattern analysis approach. An efficient framework for solving data acquisition and processing problems, joining pattern analysis and analytical procedures, is suggested. Two different techniques of pattern analysis are combined to produce a classifier and an estimator with unique characteristics to deal with noisy environments. The patterns required for the training process can be acquired from the SCADA (supervisory control and data acquisition) system and/or from load-flow simulations. Test results have been obtained for the IEEE 24-bus reliability test system.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"26 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":"121540843","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: 12
Modeling rural power quality 农村电力质量建模
Proceedings of the Twenty-Second Annual North American Power Symposium Pub Date : 1900-01-01 DOI: 10.1109/NAPS.1990.151386
D. Koval, J. Leonard, Z.J. Licsko
{"title":"Modeling rural power quality","authors":"D. Koval, J. Leonard, Z.J. Licsko","doi":"10.1109/NAPS.1990.151386","DOIUrl":"https://doi.org/10.1109/NAPS.1990.151386","url":null,"abstract":"The authors present the results of a power quality survey at the Stauffer Farms Ltd. site located in Eckville, Alberta. The statistical patterns of occurrence of power supply anomalies (e.g., voltage impulses, sags and surges, etc.) are presented and their significance in determining the possible origins of these power supply anomalies are discussed. The authors present a discussion of how these patterns form the basis for modeling research of complex rural electrical systems (e.g., a phase-neutral supply system coupled with a multiple grounded network whose impedances are frequency dependent). These models are required to design and operate rural electrical networks serving sensitive electronic and electrical loads.<<ETX>>","PeriodicalId":330083,"journal":{"name":"Proceedings of the Twenty-Second Annual North American Power Symposium","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1900-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127436487","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
首页 上一页
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