{"title":"Transmission expansion planning using multi-objective optimization","authors":"J. Alseddiqui, R. Thomas","doi":"10.1109/PES.2006.1708924","DOIUrl":"https://doi.org/10.1109/PES.2006.1708924","url":null,"abstract":"The electricity industry has always been interested in expanding investment in the transmission sector of the industry. As load demand increases and generation expands to meet the need, transmission expansion becomes important in order to increase social welfare by reducing total system operating cost, and to make the system more reliable. A methodology for contemporary transmission expansion planning using mixed-integer nonlinear multi-objective optimization to reduce total system operating cost (congestion alleviation) and line construction/investment cost is explored here. The mixed-integer nonlinear multi-objective optimization includes network constraints (line thermal limits, voltage limits, and generator limits). Contingency analysis is performed after the optimization. The methodology is applied to an IEEE 30-bus system, an IEEE 118-bus system, and the results are presented","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124112134","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}
{"title":"FE-based physical phase variable models of electric machines and transformers for dynamic simulations","authors":"O. Mohammed, S. Liu, Z. Liu","doi":"10.1109/PES.2006.1709640","DOIUrl":"https://doi.org/10.1109/PES.2006.1709640","url":null,"abstract":"This paper presents the development of the FE-based physical phase variable models for electric machines. Our results show that the developed FE-based phase variable models provide the same accuracy as the full FE model but with much faster simulation speed. These models are necessary for the study of new control strategies to facilitate dynamic simulation in an industrial environment. The FE-based phase variable model is developed with the lumped circuit parameters obtained from FE solutions covering a complete steady state ac cycle. These parameters are described by tables and utilized through table lookup procedure during the simulation. These models take into consideration the effects of nonlinear magnetization and geometry variation, winding arrangements and rotation. In the case of iron core transformers, the model takes into account the inductance variations with the flux amplitude as well as its phase angle during a complete ac cycle. The FE-based phase variable model for various types of machines were studied, including pm synchronous machine, brushless dc motor, induction machine, and transformers","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"20 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120899448","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}
{"title":"Probabilistic assessment of transmission system reliability performance","authors":"A. Chowdhury, D. Koval","doi":"10.1109/PES.2006.1709096","DOIUrl":"https://doi.org/10.1109/PES.2006.1709096","url":null,"abstract":"Traditionally, the need for system reinforcements to improve customer supply reliability has been determined solely based on deterministic criteria. For example, the widely used single contingency criterion (N-1 criterion) requires that acceptable system conditions shall exist after the loss of a major system equipment such as a generating unit, transmission line or transformer. Though easy to use, due to inherent limitations, the deterministic criteria can not realistically model the stochastic nature of power system behavior. Probability based models have been developed to accurately reflect stochastic nature of a power system behavior and assess its reliability performance. This paper presents different features of such a reliability model used to compute the reliability performance of a practical transmission system","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116210484","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}
{"title":"Next-generation electricity market models, and regulatory developments options and challenges for the West African power pool","authors":"R.R. Evans-Appiah","doi":"10.1109/PES.2006.1709597","DOIUrl":"https://doi.org/10.1109/PES.2006.1709597","url":null,"abstract":"This paper discusses the steps being taken towards establishing a power pool among members of the Economic Community of West African States (ECOWAS) a regional economic bloc of 15 West African states, and it addresses the governance structure to be adopted to govern cross-border trades. The system would work alongside the respective national regulatory bodies to oversee the in-country electricity operations. The paper discusses the challenges for ultimately adopting a single regional market and the challenges to overcome as countries seed national control over electricity transactions","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"61 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121701343","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}
{"title":"A new arcing fault modeling and detection technique for navy IPS power system","authors":"J. Momoh, A.S. Ishola-Salawu","doi":"10.1109/PES.2006.1709620","DOIUrl":"https://doi.org/10.1109/PES.2006.1709620","url":null,"abstract":"Smooth and uninterrupted operation in the ship electric power system requires very efficient fault protection schemes for the electrical apparatus and components in the network. Detection and identification of fault therefore become necessary in order to provide protection for the network in events of a fault. This paper presents modeling and detection and identification of arcing fault for the navy IPS system. In this work, single-line-to-ground and 3-phase arcing faults are simulated on the IPS network. This effort is part of the ongoing work in fault detection and location studies in the navy ship to provide adequate control for the overall ship electrical system","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114838920","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}
{"title":"Back-up protection of distance relay second zone by directional overcurrent relays with combined curves","authors":"M. Khederzadeh","doi":"10.1109/PES.2006.1709262","DOIUrl":"https://doi.org/10.1109/PES.2006.1709262","url":null,"abstract":"In this paper, a novel approach for simultaneous setting of distance and directional overcurrent relays is presented. When the line protection schemes are composed of distance relays and directional overcurrent relays the setting of the relays must be computed considering both relays. Separate relay computation would lead to loss of selectivity. If the second zone time setting is fixed, automatic determination of the settings could lead to a non-feasible situation, indicating the impossibility of finding a selective set of settings. Thus the second zone time must be manually changed until the optimization problem is feasible. In this method, the best setting for the second zone that assures selectivity could be larger than the classical setting, so, it could lead to the unfavorable timing of the second zone. In the proposed method, instead of changing the time of the second zone, the shape of the backup directional overcurrent relay would be changed adaptively with the fault location and current. The idea of reducing the overcurrent protection response times at higher fault currents is achieved using a universal protection device with a software platform that can facilitate designing time-current characteristic curves of different shapes, all in the same hardware. The simulation results indicate the effectiveness of the method","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114873534","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}
{"title":"A detailed pumped storage station model for power system analysis","authors":"H.M. Gao, C. Wang","doi":"10.1109/PES.2006.1709259","DOIUrl":"https://doi.org/10.1109/PES.2006.1709259","url":null,"abstract":"In the pumped storage stations, the operating point of reversible pump turbine and the water flow direction in conduit system often change. There is no detailed pumped storage station model in present commercial power system simulation software. The ideal hydro turbine model can only be applied under the generating operating condition, but can't be applied under the pumped operating condition, the conversion of operating condition, large disturbance simulation, and so on. In this paper, a new detailed pumped storage station model is established by the PSS/E user-written model: The reversible pump turbine is represented by the improved SUTER transform characteristics model, which is based on the four-quadrant operating characteristics. And the conduit system is represented by the versatile model. Based on the PSS/E power system models, the generating operating condition, the pumped operating condition, the conversion of operating condition and large disturbance can all be simulated. The application of this model to the test systems is carried out and the results show that the pumped storage station model is valid","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124162820","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}
{"title":"Fast feedforward SVC controller for improving power quality of super proton synchrotron","authors":"D. Jovcic, K. Kahle","doi":"10.1109/PES.2006.1708852","DOIUrl":"https://doi.org/10.1109/PES.2006.1708852","url":null,"abstract":"This paper describes firstly the principles of dynamic modeling of CERN's super proton synchrotron (SPS) accelerator. The SPS dynamic model adequately represents internal power system structure and SPS interactions with the supply grid. Since the SPS consists of 48 converters and 48 transformers, the modeling goal is the development of an equivalent model with a reasonably low number of converters in order to reduce model complexity. The SPS control system is also simplified in accordance with the modeling aims. The model is implemented in PSCAD/EMTDC and tested against CERN measurements where accurate model responses are observed. The SPS model is used to gain understanding of the power quality issues at CERN's 18 kV bus. A new controller is developed for the 150 MVAr SVC which is normally used for SPS reactive power compensation. The feedforward controller is based on fast measurements of DC side SPS variables enabling estimation of SPS power variations. The new controller demonstrates reduction in the 18 kV AC voltage peaks during SPS cycles","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127599602","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}
{"title":"Application of active identification method to synchronous generator parameter estimation","authors":"H. Agahi, M. Karrari, W. Rosehart, O. Malik","doi":"10.1109/PES.2006.1709158","DOIUrl":"https://doi.org/10.1109/PES.2006.1709158","url":null,"abstract":"Active identification procedure uses the control input to actively drive the system state to points in the state space that allow the orthogonalized projection estimator to acquire all the necessary information about the unknown parameters in a finite time interval, whose maximum length can be computed. Therefore it is most suitable for online applications. The main feature of active identification procedure is that the study system should be transformed into an output-feedback form, in which the nonlinearities depend only on the measured output. To apply such a procedure to estimate the parameters of a synchronous generator, first, a third order nonlinear model with saturation is transformed to an output feedback form. Then the identification method is modified and applied to estimate the unknown parameters. The simulation results show very good accuracy of the estimated parameters","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126331534","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}
D. Wiegmann, D. Wiegmann, T. Overbye, Stephan M. Hoppe, G. R. Essenberg, Y. Sun
{"title":"Human factors aspects of three-dimensional visualization of power system information","authors":"D. Wiegmann, D. Wiegmann, T. Overbye, Stephan M. Hoppe, G. R. Essenberg, Y. Sun","doi":"10.1109/PES.2006.1709137","DOIUrl":"https://doi.org/10.1109/PES.2006.1709137","url":null,"abstract":"This paper presents experimental results associated with human factors aspects of using three-dimensional (3D) visualizations to display electric power system generation information on one-line diagrams. The paper's results are based on an experiment performed at the University of Illinois at Urbana-Champaign using electric power system students. The results indicate that compared to standard 2D one-line displays, 3D visualizations of generator output and reserves can be used successfully on one-line displays to improve both the speed and accuracy of certain tasks","PeriodicalId":267582,"journal":{"name":"2006 IEEE Power Engineering Society General Meeting","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-10-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128062683","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}