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2007 IEEE Power Engineering Society General Meeting最新文献

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Procedure Analysis of IEC 870-5-101 Clock Synchronization and One of Its Improved Algorithms iec870 -5-101时钟同步程序分析及其改进算法之一
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385701
Zonghao Cen, Xingqi Fang
{"title":"Procedure Analysis of IEC 870-5-101 Clock Synchronization and One of Its Improved Algorithms","authors":"Zonghao Cen, Xingqi Fang","doi":"10.1109/PES.2007.385701","DOIUrl":"https://doi.org/10.1109/PES.2007.385701","url":null,"abstract":"Software based clock synchronization is still necessary in lots of situations, and so as for transmission protocols between telecontrol equipment and systems. IEC 870-5-101 is one of the most important and widely used transmission protocols, and its clock synchronization procedure is typical. So, IEC 870-5-101's clock synchronization procedure is then summarized clearly, and some of its shortcomings are also discussed. Finally, one improved algorithm is proposed, being easier to be implemented, yet more accurate.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129904505","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
PLL Based Multirate Harmonic Estimation 基于锁相环的多速率谐波估计
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.386179
J. R. Carvalho, P. H. Gomes, C. Duque, Moises Vidal Ribeiro, J. Szczupak
{"title":"PLL Based Multirate Harmonic Estimation","authors":"J. R. Carvalho, P. H. Gomes, C. Duque, Moises Vidal Ribeiro, J. Szczupak","doi":"10.1109/PES.2007.386179","DOIUrl":"https://doi.org/10.1109/PES.2007.386179","url":null,"abstract":"This paper outlines a novel method for harmonic estimation based on the PLL (phase-locked loop) approach. The method combines the use of a pre-filtering analysis structure followed by down-sampler operator and PLL estimator. The filter is an adaptive bandpass filter with initial center frequency at harmonic component. As the filter is adaptive its center frequency can move toward thed harmonic (or inter-harmonic) component, attending to the case when the system frequency varies. The frequency estimation is obtained in the PLL stage. Finally, the down-sampler device reduces the computational effort. Simulation results show that this approach is faster and more precise than other PLL structures.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130106764","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
Load Shedding Scheme Ensuring Voltage Stability 确保电压稳定的减载方案
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385850
X. Fu, Xifan Wang
{"title":"Load Shedding Scheme Ensuring Voltage Stability","authors":"X. Fu, Xifan Wang","doi":"10.1109/PES.2007.385850","DOIUrl":"https://doi.org/10.1109/PES.2007.385850","url":null,"abstract":"A computationally simple algorithm is developed for studying the load shedding problem in emergencies where an ac power flow solution cannot be found for the stressed system. The proposed algorithm is divided into two sub-problems: restoring solvability sub-problem and improving voltage stability margin (VSM) sub-problem. Linear optimization (LP)-based optimal power flow (OPF) is applied to solve each sub-problem. In restoring solvability sub-problem, rather than taking restoring power flow solvability as direct objective function, the objective function of maximization of voltage magnitudes of weak buses is employed. In VSM sub-problem, the traditional load-shedding objective is extended to incorporate both technical and economic effects of load shedding and the linearized VSM constraint was added into the LP-based OPF. Case studies with a real 682 bus system are presented. The simulation results show that the proposed load shedding algorithm is effective, fast in finding the load shedding scheme to solve the problem of restoring solvability and improving VSM.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130363911","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
Power System Hardening through Autonomous, Customer-driven Microgrids 通过自主、客户驱动的微电网强化电力系统
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385994
J. Mitra, S. Ranade
{"title":"Power System Hardening through Autonomous, Customer-driven Microgrids","authors":"J. Mitra, S. Ranade","doi":"10.1109/PES.2007.385994","DOIUrl":"https://doi.org/10.1109/PES.2007.385994","url":null,"abstract":"Autonomous, customer-driven microgrids can harden power systems by providing significant reliability and security benefits. However, these benefits can best be achieved by utilities and system planners adopting a \"can do\" attitude that approaches the problem as that of metamorphosis of today's distribution systems into tomorrow's microgids, rather than as a reluctant, gradual and incremental transition. Moreover, this can be achieved by today's technology. All the enabling devices and technologies either already exist, or are under development. All that really needs to be implemented are strategies for deploying this technology, and the rules of their interaction and operation. This paper outlines the processes that will enable the metamorphosis mentioned above.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"57 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130551913","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: 10
D-based Predictive Control for Enhancement of Distribution System Stability and Operation 基于d的预测控制提高配电系统的稳定性和运行
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385548
Lin Wang, R. Cheung
{"title":"D-based Predictive Control for Enhancement of Distribution System Stability and Operation","authors":"Lin Wang, R. Cheung","doi":"10.1109/PES.2007.385548","DOIUrl":"https://doi.org/10.1109/PES.2007.385548","url":null,"abstract":"The stability of bulk power electricity systems has been well studied for decades. Conversely the stability study for newly deregulated distribution power systems with dispersed generations from small conventional or alternate energy sources has been virtually limited. Stability concerns, however, increase rapidly with today's growing demands for open access to power systems for electricity generation and trading, facilitated by new government deregulations. This paper presents a novel generator control based on step-ahead predictive methodology and state-of- the-art real-time digital signal processing (DSP) technology. This DSP-control-based (D-based) Predictive Control is built upon optimization of a specific performance index defined as a weighted combination of generator voltage deviation, mechanical and electrical torques mismatch, incremental generator speed, etc. This paper demonstrates that the D-based Predictive Control can significantly improve the stability and operational coordination of distribution systems particularly those with dispersed generations, open access operations, or weakly connections to bulk power systems.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126837691","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
Capacity Enhancement for Aging Distribution Systems using Single Wire Earth Return 利用单线接地回路提高老化配电系统容量
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385451
P. Wolfs, N. Hosseinzadeh, S. Senini
{"title":"Capacity Enhancement for Aging Distribution Systems using Single Wire Earth Return","authors":"P. Wolfs, N. Hosseinzadeh, S. Senini","doi":"10.1109/PES.2007.385451","DOIUrl":"https://doi.org/10.1109/PES.2007.385451","url":null,"abstract":"Single wire earth return systems, (SWER), are the low cost technology for rural power distribution and have global application. In the Australian setting, voltage regulation is becoming the determining factor for older SWER systems. In long systems, directly connected shunt reactors are used to compensate the effects of line to ground capacitance. The replacement of fixed shunt reactors with controllable reactors provides an opportunity to approximately double the capacity of an aging infrastructure. Three case studies based on the North Jericho system are presented and a range of practical implementation issues are discussed.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129294553","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
A Reactive Power Model for a Simultaneous Real and Reactive Power Dispatch 一种实时和无功同步调度的无功模型
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385587
L. Amarasinghe, U. Annakkage, R. Ranatunga
{"title":"A Reactive Power Model for a Simultaneous Real and Reactive Power Dispatch","authors":"L. Amarasinghe, U. Annakkage, R. Ranatunga","doi":"10.1109/PES.2007.385587","DOIUrl":"https://doi.org/10.1109/PES.2007.385587","url":null,"abstract":"This paper investigates the simultaneous dispatch of real power and reactive power in restructured electricity markets. In this proposed method the opportunity cost of supplying reactive power is implicitly modeled using the rating of the machine as a constraint. Fairness of reactive power supplying obligation is also ensured in the proposed model by splitting the reactive power supplied by the generator into two components with the first component being proportional to real power dispatch. The model is evaluated using the IEEE 30 bus system.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123821092","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
An Online Control Strategy for DC Coupled Hybrid Power Systems 直流耦合混合动力系统的在线控制策略
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385637
O. Omari, E. Ortjohann, A. Mohd, D. Morton
{"title":"An Online Control Strategy for DC Coupled Hybrid Power Systems","authors":"O. Omari, E. Ortjohann, A. Mohd, D. Morton","doi":"10.1109/PES.2007.385637","DOIUrl":"https://doi.org/10.1109/PES.2007.385637","url":null,"abstract":"This paper describes how different power sources of a hybrid power system may be connected together through a DC bus and then to a grid through a main inverter in such a way that a decoupling between the state variables of the power sources and the state variables of the grid is achieved. A layout showing such a structure will be presented, and an online control strategy for such a layout will be developed to show that it is modular, expandable, and easily controllable. The transmission behaviour of such a structure under different load and meteorological conditions will be investigated by applying the developed control strategy to a developed simulation model of the structure. Afterwards the results of a simulation case study will be introduced and discussed.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123143419","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: 34
Managing Ontario IESO Network Model and Its Impact 管理安大略省IESO网络模型及其影响
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.386188
B. Danai, B. Pettitt, H. Kandola
{"title":"Managing Ontario IESO Network Model and Its Impact","authors":"B. Danai, B. Pettitt, H. Kandola","doi":"10.1109/PES.2007.386188","DOIUrl":"https://doi.org/10.1109/PES.2007.386188","url":null,"abstract":"This presentation outlines the experience of the IESO in managing the Ontario Network Model. The IESO existing processes for gathering the network data from the market participant, validating the data, building the network model, and loading the network model into the energy management system (EMS) and market information system (MIS) are first outlined. Next the available tools for the network model data validation are presented and finally the impact of the network model on the operation as well as the electricity market is discussed. In conclusion, some desired tool features in managing the network model are presented.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121283798","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
Determination of Substation Models for Composite System Reliability Evaluation 复合系统可靠性评估中变电站模型的确定
2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385621
M. Sidiropoulos
{"title":"Determination of Substation Models for Composite System Reliability Evaluation","authors":"M. Sidiropoulos","doi":"10.1109/PES.2007.385621","DOIUrl":"https://doi.org/10.1109/PES.2007.385621","url":null,"abstract":"The reliability performance of transmission system substations is critical for overall system reliability. Failure events at main grid substations can lead to multiple outages with possible cascading consequences and widespread loss of customer load. Considerable knowledge on substation reliability analysis has been gained from the application of primarily analytical methods. The complexity, however, of substation switching operations does not lend itself to pure analytical treatment. Simulation methods are more suitable as the mathematical modeling of the relationship between events and outcomes is not always possible. The paper expands the existing methodology and describes a method to perform reliability evaluation of substation switching arrangements based on the sequential Monte Carlo simulation. The method is applied in the reliability analysis and comparison of the most commonly used substation switching configurations. The paper shows how the results of the analysis can be applied to model substations in a composite system reliability evaluation.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-06-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114309208","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
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