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IEEE PES Power Systems Conference and Exposition, 2004.最新文献

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Application meta-heuristics method for short-term unit commitment problem 应用元启发式方法求解短期机组承诺问题
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397426
Gwo-Ching Liao
{"title":"Application meta-heuristics method for short-term unit commitment problem","authors":"Gwo-Ching Liao","doi":"10.1109/PSCE.2004.1397426","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397426","url":null,"abstract":"This work presents a hybrid chaos search genetic algorithm and simulated annealing method (CGA-SA) for solving short-term thermal generating unit commitment (UC) problems. The UC problem involves determining the start-up and shutdown schedules for generating units to meet the forecasted demand at the minimum cost. The commitment schedule must satisfy other constraints such as the generating limits per unit, reserve and individual units. We combined a genetic algorithm with the chaos search. First, it generates a set of feasible unit commitment schedules, and then puts the solution to the SA. The CCA has good global optima search capabilities, but poor local optima search capabilities. The SA method on the other hand, has good local optima search capabilities. Through this combined approach an optimal solution can be found.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"152 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114272310","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: 5
A probabilistic method for reliability, economic and generator interconnection transmission planning studies 可靠性、经济性和发电机互联输电规划研究的概率方法
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397436
K. E. Harris, W.E. Strongman
{"title":"A probabilistic method for reliability, economic and generator interconnection transmission planning studies","authors":"K. E. Harris, W.E. Strongman","doi":"10.1109/PSCE.2004.1397436","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397436","url":null,"abstract":"Probabilistic methods for transmission planning have been put forth by several authors in the past. These previous methods have recommended departures from the current N-1 contingency method used by most utilities and independent system operators. The method proposed in this paper is intended to take the exiting N-1 method and enhance it by using a tool called @Risk. The authors propose that the method described in this paper can be used to compare transmission development scenarios that are intended to relieve congestion between areas, or to rank transmission projects intended to improve reliability.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128647864","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
Analysis of bidding-strategy for leadership-company in power market 电力市场中领导型公司的投标策略分析
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397552
Hui He, Zheng Xu, Chao Wang
{"title":"Analysis of bidding-strategy for leadership-company in power market","authors":"Hui He, Zheng Xu, Chao Wang","doi":"10.1109/PSCE.2004.1397552","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397552","url":null,"abstract":"In electricity market environment, bidding strategies employed by generation companies have significant impacts on their own profits and market's economic characteristics. The leadership-company, which has large capacity and low cost in system, may exert the competition superiority by employing bidding strategies, such as capacity withholding, to gain additional profits. Thus, how to investigate the strategic bidding behaviors and how to analyze potential market power of leadership-company are important research areas in electricity market. The pricing model of leadership-company based on optimization is proposed in this paper. The optimal bidding capacities, profits and settlement prices can be produced by an iteration algorithm. The results are compared with the corresponding data of normal competition to evaluate the bidding behaviors of a leadership-company. Based on the varying loads of a whole day, the bidding strategies of a leadership-company have been analyzed by a simple 8-bus system example.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130535632","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
Determining optimal allocation of flow controllers based on system stability and controllability 基于系统稳定性和可控性确定流量控制器的最优配置
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397550
Chung-Neng Huang
{"title":"Determining optimal allocation of flow controllers based on system stability and controllability","authors":"Chung-Neng Huang","doi":"10.1109/PSCE.2004.1397550","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397550","url":null,"abstract":"A hierarchical screened method for determining the optimal allocation of flow controllers are proposed in this paper. Since the allocation patterns are found basing on the concept of tree/co-tree in graph theory, all line flows of the system are controllable only by the minimum number of flow controllers. In order to prevent from system instability resulting from flow control, the eigen analysis of the sensitive matrices characterized the corresponding allocations are taken. It is helpful to screen out the invalid allocations where flow controllers may cause instability in the system. Finally, by comparison with the flow controllability of each allocation, the optimal one hit the target of flow control can be found. A three-machine four-bus two-loop model system is given as an example to confirm the effectiveness of the proposed method.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123876676","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 layered architecture to model interdisciplinary complexity in the deregulated power industry 一种分层架构，用于模拟解除管制的电力行业中跨学科的复杂性
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397638
V. Bharadwaj, Y. Reddy, A. Chandramouli, Sumitra Reddy
{"title":"A layered architecture to model interdisciplinary complexity in the deregulated power industry","authors":"V. Bharadwaj, Y. Reddy, A. Chandramouli, Sumitra Reddy","doi":"10.1109/PSCE.2004.1397638","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397638","url":null,"abstract":"The highly interdisciplinary nature of existing deregulated power industries makes research a challenge. Recognizing the complexity associated with the domain we propose a layered, modular approach to modeling and studying this domain. Such an approach helps in establishing a clear relationship among the various engineering and economic aspects of power systems, which is essential to gain insight into the nuances of the field. In this paper we describe our methodology and provide the architecture for an environment to support such investigation. With rapid technological advances as well as deregulation of power systems in most parts of the world we feel that such an approach would be very valuable in studying the various issues of interest.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123936206","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 extension of feedback-feedforward technique to input-output feedback linearization 反馈-前馈技术在输入-输出反馈线性化中的扩展
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397590
E. De Tuglie, G. Patrono, F. Torelli
{"title":"An extension of feedback-feedforward technique to input-output feedback linearization","authors":"E. De Tuglie, G. Patrono, F. Torelli","doi":"10.1109/PSCE.2004.1397590","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397590","url":null,"abstract":"Large scale systems, such as interconnected power systems, need to be described in a more accurate form than in the past allowing the overexploitation of system resources. Not negligible nonlinear phenomena increase computational complexity especially for what control system design concerns. Classical control design, based on linearization techniques has become no more suitable to take into account strong nonlinear effects and unmodeled dynamics, while input-output feedback linearization shows computational difficulties as the order of the system to be linearized increases. In this paper the classical feedback-feedforward technique for linear systems has been applied to a particular cascade connection of an input-output linearized system feeded by a linear system. The proposed approach achieves perfect tracking for the linearized model and an overall reduction in computational effort.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"180 11","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113999716","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
An improvement on steam turbine generator trip caused by voltage sag 对电压骤降引起汽轮发电机跳闸的改进
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397712
C. Ning, T. Tsao
{"title":"An improvement on steam turbine generator trip caused by voltage sag","authors":"C. Ning, T. Tsao","doi":"10.1109/PSCE.2004.1397712","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397712","url":null,"abstract":"This paper attempts suggest improvements on Nan-Pu combined cycle power plant, which is located in Kaoshiung of Taiwan. As far as transient outage of power system in southern Taiwan is concerned, the steam turbine generator would trip but the gas turbine generator would keep running. The outages had occurred several times since commercial synchronization; it happened as many as three times from January to June in 2001. Consequently, we found that the settings of overcurrent protection relay of excitation transformer were improper in our investigation and through with the other plant. By modifying the relay settings, this defect has already been corrected fully. The project not only improve working achievement, but also enhance transient stability of overall power system in Taiwan.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124049451","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
Dual tabu search for capacitor control in distribution systems 配电系统中电容控制的双禁忌搜索
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397452
H. Mori, Y. Iimura
{"title":"Dual tabu search for capacitor control in distribution systems","authors":"H. Mori, Y. Iimura","doi":"10.1109/PSCE.2004.1397452","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397452","url":null,"abstract":"In this paper, dual tabu search is presented for capacitor control in distribution systems. Capacitor control is important in maintaining power quality in distribution systems. The problem formulation of capacitor control may be expressed as a combinatorial optimization problem of capacitor banks. Meta-heuristics is more efficient for solving a combinatorial optimization problem. In particular, tabu search of meta-heuristics is one of the promising meta-heuristics. However, tabu search still has room for improving the solution quality in a large-scale combinatorial optimization problem. This paper proposes a new tabu search that makes use of the dual code for the initial value. For a given initial value, the dual code is considered and a couple of initial values allow the algorithm to evaluate better solutions. The effectiveness of the proposed method is demonstrated in the 32-node and 69-node distribution systems.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"170 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124140438","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: 5
Probabilistic model for adequacy evaluation of electric networks with sizeable wind power generation 大型风力发电电网充分性评估的概率模型
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397625
P. Bresesti, R. Calisti, D. Provenzano, A. Vaiani, B. Zecca
{"title":"Probabilistic model for adequacy evaluation of electric networks with sizeable wind power generation","authors":"P. Bresesti, R. Calisti, D. Provenzano, A. Vaiani, B. Zecca","doi":"10.1109/PSCE.2004.1397625","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397625","url":null,"abstract":"Wind energy plays an important role in growth of renewable resources exploitation both for plants number and installed power. This paper presents a model that, in planning activities, makes possible to evaluate, with a probabilistic analysis and calculation of some reliability indices as EENS, LOLP and LOLE, network adequacy also for those cases in which many wind farm are installed. The presented approach is applied to 152 buses test system. Compared to deterministic methods, results help to find more accurate optimum size of wind plants, taking account of network reliability.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128045149","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
Frequency estimation of low-voltage distribution systems in transient processes 暂态过程中低压配电系统的频率估计
IEEE PES Power Systems Conference and Exposition, 2004. Pub Date : 2004-10-10 DOI: 10.1109/PSCE.2004.1397514
J. Long
{"title":"Frequency estimation of low-voltage distribution systems in transient processes","authors":"J. Long","doi":"10.1109/PSCE.2004.1397514","DOIUrl":"https://doi.org/10.1109/PSCE.2004.1397514","url":null,"abstract":"A fast algorithm for tracking the frequency of low-voltage distribution systems in transient processes is presented in this paper. A RC circuit is taken into consideration, and the current signal of transient process in the RC circuit is used to estimate the frequency of distribution systems. The transient current signal is proposed to be a sinusoidal signal with an additional decreasing magnitude in the form of exponential functions. Employing central numerical differentiation of 7 sampling points and Lagrange interpolation, the frequency of low-voltage distribution systems in transient process is estimated at an accuracy of 99.99% in half cycle. The simulation results of an example show better dynamic features of the proposed algorithm, the simulation is carried out in Matlab software and a digital control system.","PeriodicalId":308184,"journal":{"name":"IEEE PES Power Systems Conference and Exposition, 2004.","volume":"144 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126013566","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
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