2007 IEEE Power Engineering Society General Meeting最新文献_第10页

A Novel Algorithm for Discrimination Between Inrush Currents and Internal Faults Based on Equivalent Instantaneous Leakage Inductance 一种基于等效瞬时漏感的励磁涌流与内部故障鉴别新算法

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385714

Ma Jing, Wang Zeng-ping

引用次数: 10

A Computational Algebraic Geometry Based Global Optimization Technique to Address Economic Dispatch 基于计算代数几何的经济调度全局优化技术

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.386198

R. Kavasseri, Parthasarathi Nag

{"title":"A Computational Algebraic Geometry Based Global Optimization Technique to Address Economic Dispatch","authors":"R. Kavasseri, Parthasarathi Nag","doi":"10.1109/PES.2007.386198","DOIUrl":"https://doi.org/10.1109/PES.2007.386198","url":null,"abstract":"In algebraic geometry, the concept of Grobner basis allows a systematic study of the solution of a system of polynomial equations. This concept can be applied to find the global (and all local optima) optimum of a nonlinear, not necessarily convex function, the only restriction being that the objective function be polynomial. The method is based on computing a lexicographic (lex) ordered Grobner basis for the ideal generated by the first order necessary conditions defined by the Lagrangian. Computing the optimal solution is then equivalent to computing the variety corresponding to this ideal. By virtue of the (lex) ordering, the system is transformed in to set of polynomials which can be solved successively to obtain the solutions. Here, we illustrate the application of the method on a non-convex function and identify the global optimum from the set of fifteen stationary points (6 local minima, 2 local maxima and 7 saddles). Then we apply the method to solve the classical economic dispatch problem including a combined cycle heat plant (CCHP) whose piecewise linear cost function is approximated by a smooth tenth order polynomial. Interestingly, the the method yields two possible solutions from which the least cost solution can be picked. While the work reported here is only preliminary, we find the results encouraging and hope that the method will find applicability in identifying the global optimum of non-convex power systems optimization problems.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"44 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":"134456798","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

Singularity detection in Solar Radiation Signal using wavelet transform 基于小波变换的太阳辐射信号奇异点检测

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.386160

S. Regis, T. Soubdhan, R. Calif, M. Abadi, R. Blonbou

{"title":"Singularity detection in Solar Radiation Signal using wavelet transform","authors":"S. Regis, T. Soubdhan, R. Calif, M. Abadi, R. Blonbou","doi":"10.1109/PES.2007.386160","DOIUrl":"https://doi.org/10.1109/PES.2007.386160","url":null,"abstract":"Solar energy converter devices such as photovoltaic cells are very sensitive to instantaneous solar radiation fluctuations. Thus rapid variation of solar radiation due to changes in the local meteorological condition can induce large amplitude fluctuations of the produced electrical power and reduce the overall efficiency of the system. When large amount of photovoltaic electricity is send into a weak or small electricity network such as island network; the electric grid security can be in jeopardy due to these power fluctuations. To palliate these difficulties, it is essential to identify the characteristic of these fluctuations in order to anticipate the eventuality of power shortage or power surge. The detection of singularity in solar radiation signal allows separating the signal in different sequences, as a function of the different meteorological conditions encountered at the measurement site. Thereby, the different sequences could be analyzed separately. For instance, a statistical analysis could be conducted in order to classify these sequences as a function of their effect on the overall efficiency of a photovoltaic system. The objective of this paper is to present an approach that uses wavelet transform analysis to detect singularities in solar radiation signal. This preliminary work set the basis for further investigation dedicated to classification of solar energy fluctuation.","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":"133836681","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: 2

Voltage Stability Study of the PJM System Following Extreme Disturbances 极端扰动下PJM系统电压稳定性研究

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385705

R. Koessler, Wenzheng Qiu, M. Patel, H. Clark

引用次数: 4

Damping of Inter-area Oscillations by WAM Based Supplementary Controller 基于WAM的补充控制器对区域间振荡的阻尼

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.386095

Zhijian Hu, J. Milanović

引用次数: 16

Design of Power System Stabilizers Using Synergetic Control Theory 基于协同控制理论的电力系统稳定器设计

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385651

Zhenhua Jiang

{"title":"Design of Power System Stabilizers Using Synergetic Control Theory","authors":"Zhenhua Jiang","doi":"10.1109/PES.2007.385651","DOIUrl":"https://doi.org/10.1109/PES.2007.385651","url":null,"abstract":"Power system stabilizers (PSSs) are used to provide damping torque for the synchronous generators to suppress low frequency oscillations present in the power system by generating supplementary control signals for the excitation system. Strong nonlinearity and dynamics exist in the power system. Numerous previous techniques have been proposed to design PSSs but many of them are synthesized based on a linearized model. This paper presents a nonlinear power system stabilizer based on synergetic control theory. Synergetic synthesis of the PSS is based fully on a simplified nonlinear model of the power system. The synergetic control law provides asymptotic stability with respect to the required operating modes, invariance to the load variations, and robustness to variations of the input variables and power system parameters. The dynamic characteristics of the proposed PSS are studied in a typical single-machine infinite-bus power system and compared with the cases with a conventional PSS and without a PSS. Simulation results show the proposed PSS is robust for such nonlinear dynamic system and achieves better performance than the conventional PSS in damping oscillations.","PeriodicalId":380613,"journal":{"name":"2007 IEEE Power Engineering Society General Meeting","volume":"164 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":"115555464","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: 18

Performance Comparison of Aggregated and Distributed Energy Storage Systems in a Wind Farm For Wind Power Fluctuation Suppression 用于抑制风力发电波动的风电场聚合与分布式储能系统性能比较

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.386249

Wei Li, G. Joós

引用次数: 26

Using Trajectory Sensitivity for Stability Assessment of a Ward-PV Equivalent Power System 基于轨迹灵敏度的Ward-PV等效电力系统稳定性评估

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385911

D. Chatterjee, A. Ghosh

引用次数: 4

Probability Distribution of Power System Blackouts 电力系统停电的概率分布

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385471

B. Gou, Hui Zheng, Weibiao Wu, X. Yu

引用次数: 14

Benefits and Impact of Using Small Generators for Network Support 使用小型发电机进行网络支持的好处和影响

2007 IEEE Power Engineering Society General Meeting Pub Date : 2007-06-24 DOI: 10.1109/PES.2007.385933

V. V. Thong, J. Driesen, R. Belmans

引用次数: 11