2007 IEEE Lausanne Power Tech最新文献_第7页

Comparison of Genetic Algorithms and Particle Swarm Optimization for Optimal Power Flow Including FACTS devices 包含FACTS设备的最优潮流遗传算法与粒子群算法的比较

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538470

M. S. Kumari, G. Priyanka, M. Sydulu

{"title":"Comparison of Genetic Algorithms and Particle Swarm Optimization for Optimal Power Flow Including FACTS devices","authors":"M. S. Kumari, G. Priyanka, M. Sydulu","doi":"10.1109/PCT.2007.4538470","DOIUrl":"https://doi.org/10.1109/PCT.2007.4538470","url":null,"abstract":"This paper describes the performance of two population based search algorithms (Genetic Algorithms and Particle Swarm Optimization) when applied to Optimal Power Flow (OPF) including Static VAR Compensator (SVC) and Thyristor Controlled Series Compensator (TCSC) devices. The OPF optimizes a power system operating objective function, while satisfying a set of system operating constraints. The basic OPF solution is obtained with fuel cost minimization as the objective function and the optimal settings of the power system are determined. OPF can also be formulated for reactive power optimization, as minimization of system active power losses and improving the voltage stability in the system. In the present paper different objective functions that reflect Fuel cost minimization, System power loss minimization, Voltage Stability Enhancement (L-index minimization), Power loss minimization with SVC device and Power loss minimization with combined application of SVC and TCSC devices have been considered. To monitor and improve voltage stability in power system, minimization of sum of squared L-indices of all the load buses is considered as objective function in OPF. This index also guides the optimal location for VAR compensation. During normal operating conditions a planning engineer requires that all line flows and voltages are within limits while minimizing investment (including losses). While during outage conditions, line loading and voltages are again desired within limits while minimizing investment. It is important to obtain feasible solutions with in a minimal amount of engineering time.","PeriodicalId":356805,"journal":{"name":"2007 IEEE Lausanne Power Tech","volume":"167 11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116542576","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

Connecting Belgium and Germany using HVDC: A Preliminary Study 比利时和德国的高压直流输电:初步研究

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538489

S. Cole, D. Van Hertem, R. Belmans

引用次数: 7

Synchronized Phasor Measurement on the All-Ireland Electrical Network 全爱尔兰电网同步相量测量

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538564

Xiaoling Ding, T. Littler, J. Morrow, P. Crossley, V. Terzija, M. O’Malley

引用次数: 9

Enforcing ramp rate limits on Italian Adjustment Market 对意大利调整市场实施匝道税率限制

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538428

A. Berizzi, C. Bovo, M. Delfanti, M. Merlo

引用次数: 0

Voltage and Reactive Power Control in Closed Loop Feeders with Distributed Generation 分布式发电闭环馈线电压与无功控制

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538376

F. Viawan, D. Karlsson

{"title":"Voltage and Reactive Power Control in Closed Loop Feeders with Distributed Generation","authors":"F. Viawan, D. Karlsson","doi":"10.1109/PCT.2007.4538376","DOIUrl":"https://doi.org/10.1109/PCT.2007.4538376","url":null,"abstract":"This paper investigates voltage and reactive power control in radial and closed loop distribution systems and how the presence of distributed generation (DG) affects the control. Comparative analysis between voltage and reactive power control in radial and closed loop feeders, based on coordination of OLTC, substation capacitors (the shunt capacitors installed at the substation secondary bus) and feeder capacitors (the shunt capacitors located somewhere along the feeder) is presented. The known benefit of closed loop operation is examined in a case study. It is shown that the feeder losses and the voltage fluctuation decrease with the change from radial to closed loop operation. The decrease of voltage fluctuation in the feeder is shown not to reduce the OLTC and capacitor operation. It is also shown that in a certain case closed loop operation can even decrease the maximum allowed DG capacity in the feeders. Further, while it is known that the closed loop operation can defer the distribution line upgrade due to load growth, if the contingency operation is taken into account, the closed loop operation will even earlier request the distribution line upgrade.","PeriodicalId":356805,"journal":{"name":"2007 IEEE Lausanne Power Tech","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131134354","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: 17

New Ethernet Technologies for Substation Automation 变电站自动化的新以太网技术

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538402

C. Hoga

引用次数: 10

Real-time Parameter Estimation of Dynamic Power Systems using Multiple Observers 基于多观测器的动态电力系统实时参数估计

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538309

E. Scholtz, M. Larsson, P. Korba

引用次数: 1

A Proposed Method for Processing Unbalanced Conditions and DC Offset Currents in Transient Stability Analysis 暂态稳定性分析中不平衡条件和直流偏置电流的处理方法

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538611

S. Jafarabadi, S.M. Kouhsari

{"title":"A Proposed Method for Processing Unbalanced Conditions and DC Offset Currents in Transient Stability Analysis","authors":"S. Jafarabadi, S.M. Kouhsari","doi":"10.1109/PCT.2007.4538611","DOIUrl":"https://doi.org/10.1109/PCT.2007.4538611","url":null,"abstract":"An approach has been proposed in this paper for processing unbalanced operating conditions in transient stability calculations. The suggested method combined positive sequence network usually used for traditionally balanced transient stability program with zero and negative sequence network which are available for traditional unsymmetrical fault routines. The zero and negative bus matrixes are usually available in sparse nature within any commercial software to handle large scale power system analysis. Therefore, they can be easily used in unbalanced transient stability routines, as described in this paper. Besides, a method is presented to evaluate DC offset currents in system branches during the phasor-based transient stability run. The DC offset arise from the stator and network transients during switching (including faults). Conventional phasor-based transient stability programs ignore the occurrences of such a DC offset in their simulation process. Approximating of DC and negative sequence current braking effects in AC machines and modeling negative, ground and overcurrent instantaneous protective equipments behavior in transient stability simulation are the main benefits of the proposed method. Computer test results in comparison with results carried out by detailed three-phase time-domain simulations using power system blockset (PSB) of MATLAB, show clearly the effectiveness of the method.","PeriodicalId":356805,"journal":{"name":"2007 IEEE Lausanne Power Tech","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2007-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133274478","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

Two New Methods for Synchronous Generator Parameter Estimation 同步发电机参数估计的两种新方法

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538462

H. Agahi, M. Karrari, A. Mahmoodzadeh

引用次数: 2

A Hybrid Method of PTS and WLAV for State Estimation Including Network Topology Identification 一种混合PTS和WLAV的状态估计方法，包括网络拓扑识别

2007 IEEE Lausanne Power Tech Pub Date : 2007-07-01 DOI: 10.1109/PCT.2007.4538644

H. Mori, S. Saito

引用次数: 1