发布求助
文献互助 智能选刊 最新文献

[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference最新文献

筛选
英文 中文
Bifurcation theory and its application to nonlinear dynamical phenomena in an electrical power system 分岔理论及其在电力系统非线性动力学现象中的应用
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160594
V. Ajjarapu, B. Lee
{"title":"Bifurcation theory and its application to nonlinear dynamical phenomena in an electrical power system","authors":"V. Ajjarapu, B. Lee","doi":"10.1109/PICA.1991.160594","DOIUrl":"https://doi.org/10.1109/PICA.1991.160594","url":null,"abstract":"A tutorial introduction to bifurcation theory and the applicability of this theory in studying nonlinear dynamical phenomena in a power system network is explored. Systematic application of the theory revealed the existence of stable and unstable periodic solutions as well as voltage collapse. A particular response depends on the value of the parameter under consideration. It has been shown that voltage collapse is a subset of overall bifurcation phenomena a system may experience under the influence of system parameters. A low-dimensional center manifold reduction is applied to capture the relevant dynamics involved in the voltage collapse process. The study also emphasizes the need for the consideration of nonlinearity, especially when the system is highly stressed.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124921201","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: 329
Real-time reactive security monitoring 实时响应式安全监控
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160604
B. Avramovic, L. Fink
{"title":"Real-time reactive security monitoring","authors":"B. Avramovic, L. Fink","doi":"10.1109/PICA.1991.160604","DOIUrl":"https://doi.org/10.1109/PICA.1991.160604","url":null,"abstract":"Severe economic penalties are imposed by constraints on energy transfers imposed by contingent voltage support problems. The analysis outlined uses the granularity that characterizes power networks to define zones within which reactive reserves must match contingent reactive power requirements in order to avoid voltage support problems. The tracking of reserves relative to contingent requirements provides an online indication of safe operating conditions, including energy transfers, relative to postcontingency conditions.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122088475","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: 29
Advances in workstation technology benefit the Darlington equipment status monitoring system 工作站技术的进步使达林顿设备状态监测系统受益
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160634
R. Cairns
{"title":"Advances in workstation technology benefit the Darlington equipment status monitoring system","authors":"R. Cairns","doi":"10.1109/PICA.1991.160634","DOIUrl":"https://doi.org/10.1109/PICA.1991.160634","url":null,"abstract":"It has always been acknowledged that an effective mechanism for tracking the state of the operating equipment in a power station is necessary. Although a percentage of the equipment is monitored by the station's plant computers, a much larger percentage, representing all manually operated equipment, is not. The traditional means for monitoring the status of this equipment, by placing colored pins on paper operational flowsheets, is being replaced by a computer-based counterpart referred to as the equipment status monitoring (ESM) system. The needs and the requirements for such a system are discussed. How the advent of current workstation hardware and software technology allows such a system to be realized in a way that can be cost effective while satisfying those requirements that make ESM a productive operator tool is detailed.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133526113","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
A knowledge-based method for making restoration plan of bulk power system 基于知识的大容量电力系统恢复计划制定方法
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160598
K. Shimakura, J. Inagaki, Y. Matsunoki, M. Ito, S. Fukui, S. Hori
{"title":"A knowledge-based method for making restoration plan of bulk power system","authors":"K. Shimakura, J. Inagaki, Y. Matsunoki, M. Ito, S. Fukui, S. Hori","doi":"10.1109/PICA.1991.160598","DOIUrl":"https://doi.org/10.1109/PICA.1991.160598","url":null,"abstract":"A method that uses general-purpose restoration knowledge not dependent on preoutage system states in order to generate postrestoration target systems (where postoutage systems are taken as initial states) is proposed for use during power systems outages. Traditionally, postoutage system states are made to emulate as closely as possible preoutage system states, with system operations preformed only within blackout systems. Therefore, depending on the amount of preoutage load, some outage, loads may be experienced in the restored system. A method is proposed by which system operations in both blackout systems and sound systems are combined according to the amount of load in the preoutage systems, so that postrestoration system states with minimal outage loads from postoutage systems will be generated. A prototype system incorporating actual power systems and utilizing this method was built and tested under simulated conditions. The effectiveness of the proposed system is discussed on the basis of the test results.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133159117","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: 62
Short term scheduling in cogeneration systems 热电联产系统的短期调度
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160663
T. Seeger, J. Verstege
{"title":"Short term scheduling in cogeneration systems","authors":"T. Seeger, J. Verstege","doi":"10.1109/PICA.1991.160663","DOIUrl":"https://doi.org/10.1109/PICA.1991.160663","url":null,"abstract":"Combined generation of power and heat offers great economic advantage and serves the requirements of environmental conservation. However, the operation of such integrated cogeneration systems is a complex problem because the demand for power and for heat must be satisfied simultaneously with regard to many different constraints. The development of an advanced procedure for short-term operational planning in cogeneration systems based on the method of mixed-integer linear programming completed by some supporting measures for problem reduction is reported. Test results for sample systems derived from actual cogeneration systems indicate the procedure's ability to calculate optimal economic schedules under realistic conditions.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124572759","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
The continuation power flow: a tool for steady state voltage stability analysis 连续潮流:一个用于稳态电压稳定性分析的工具
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160593
V. Ajjarapu, C. Christy
{"title":"The continuation power flow: a tool for steady state voltage stability analysis","authors":"V. Ajjarapu, C. Christy","doi":"10.1109/PICA.1991.160593","DOIUrl":"https://doi.org/10.1109/PICA.1991.160593","url":null,"abstract":"A method of finding a continuum of power flow solutions starting at some base load and leading to a steady-state voltage stability limit (critical point) of a system is presented. A salient feature of the so-called continuation power flow is that it remains well conditioned at and around the critical point. As a consequence, divergence due to ill-conditioning is not encountered at the critical point, even when single-precision computation is used. Intermediate results of the process are used to develop a voltage stability index and identify areas of the system most prone to voltage collapse. Examples are given wherein the voltage stability of a system is analyzed using several different scenarios of load increase.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115639843","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: 1691
Analysis of the load flow behaviour near a Jacobian singularity 雅可比奇点附近荷载流动特性分析
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160621
F. Galiana, Z. Zeng
{"title":"Analysis of the load flow behaviour near a Jacobian singularity","authors":"F. Galiana, Z. Zeng","doi":"10.1109/PICA.1991.160621","DOIUrl":"https://doi.org/10.1109/PICA.1991.160621","url":null,"abstract":"New theoretical results above the behavior of the load flow solution near a Jacobian singularity are presented. The principal result is the derivation of an analytic closed-form relation between the specified injections and the resulting voltages in the neighborhood of a singularity. This result is a companion to the conventional load flow sensitivity analysis which is valid only if the operating point is not at a Jacobian singularity. The new closed-form relation derived is theoretically important since it can predict and explain the main load flow phenomena observed through simulation analysis near a singularity. These are: the nonexistence of solutions for certain injection changes, the bifurcation of the voltages into two nearby solutions, the sudden collapse of voltages for small injection changes, and the nature of the collapse, that is, which buses are more susceptible to the collapse. Numerical simulations support the validity of the theoretical result by comparing the closed-form analytic relation near a singularity with exact load flow simulations.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124926525","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: 27
Orthogonal sparse vector methods (power system applications) 正交稀疏向量法(电力系统应用)
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160613
N. Vempati, I. Slutsker, W. Tinney
{"title":"Orthogonal sparse vector methods (power system applications)","authors":"N. Vempati, I. Slutsker, W. Tinney","doi":"10.1109/PICA.1991.160613","DOIUrl":"https://doi.org/10.1109/PICA.1991.160613","url":null,"abstract":"Sparse vector methods speed up solutions of power network equations based on triangular factorization. Until now, these methods have not been used with orthogonal factorization, the most numerically stable method for least squares state estimation. An explanation is given for the extension of sparse vector methods to Givens rotations, the form of orthogonalization most suitable for power system state estimation. The methods can speed up orthogonal estimation algorithms in several ways. Their advantages are demonstrated on real-life networks.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126333505","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
Stochastic optimization of a hydro-thermal system including network constraints 含网络约束的水热系统随机优化
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160617
B. Gorenstin, N. Campodonico, J. P. Costa, M. Pereira
{"title":"Stochastic optimization of a hydro-thermal system including network constraints","authors":"B. Gorenstin, N. Campodonico, J. P. Costa, M. Pereira","doi":"10.1109/PICA.1991.160617","DOIUrl":"https://doi.org/10.1109/PICA.1991.160617","url":null,"abstract":"A methodology for the optimal scheduling of hydrothermal power systems is described taking into account multiple hydro reservoir characteristics, inflow stochasticity, and transmission network represented by a linearized power flow model. The solution algorithm is based on stochastic dual dynamic programming (SDDP), which decomposes the multistage stochastic problem into several one-stage subproblems. Each subproblem corresponds to a linearized optimal power flow with additional constraints representing the hydro reservoir equations and a piecewise linear approximation of the expected future cost function. Each subproblem is solved by a customized network flow/dual simplex algorithm which takes advantage of the network characteristics of the hydro reservoirs and of the transmission system. The application of the methodology is illustrated in a case study with a Brazilian system comprising 44 hydroplants, 11 thermal plants, 463 buses and 834 circuits.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131689883","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: 114
Integration of a ripple control system for the switching of electric night storage heating in a network control system 在电网控制系统中集成一种纹波控制系统用于电蓄热夜间开关
[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference Pub Date : 1991-05-07 DOI: 10.1109/PICA.1991.160651
U. Kontges
{"title":"Integration of a ripple control system for the switching of electric night storage heating in a network control system","authors":"U. Kontges","doi":"10.1109/PICA.1991.160651","DOIUrl":"https://doi.org/10.1109/PICA.1991.160651","url":null,"abstract":"There are important reasons for the integration of a subsystem for ripple control in the new computer-supported network control system of the Stadtwerke Dusseldorf. The main task of this ripple control system is the control of the load shares which are caused by night storage heating. An introduction to the basic problems facing operational management is given. After a brief presentation of existing ripple control equipment with the newly created connection to the network control system, an exhaustive report is given on the man-machine interface and the program functions which have been realized. This makes clear the advantages of the new system in comparison to the old. Some indications are given of possible future extensions.<<ETX>>","PeriodicalId":287152,"journal":{"name":"[Proceedings] Conference Papers 1991 Power Industry Computer Application Conference","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133563235","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
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：481959085
Book学术官方微信