European Transactions on Electrical Power最新文献_第7页

A genetic algorithm multi-objective approach for efficient operational planning technique of distribution systems 配电网高效运行规划技术的遗传算法多目标方法

European Transactions on Electrical Power Pub Date : 2009-03-01 DOI: 10.1002/ETEP.206

C. Lakshminarayana, M. R. Mohan

{"title":"A genetic algorithm multi-objective approach for efficient operational planning technique of distribution systems","authors":"C. Lakshminarayana, M. R. Mohan","doi":"10.1002/ETEP.206","DOIUrl":"https://doi.org/10.1002/ETEP.206","url":null,"abstract":"This paper presents a genetic algorithm multi-objective approach for efficient operational planning technique for electrical power distribution systems (EPDS). Service restoration is a non-linear, combinatorial, non-differential and multi-objective optimization problem that often has a great number of candidate solutions to be evaluated by the operators. To tackle the problem of service restoration with multiple objectives, the weighted sum strategy is employed to convert these objectives into a single objective function by giving equal weighting values. The transformer/feeders capacity in the post-fault distribution network creates a major problem for the electrical power distribution engineers and distribution system substation operators to satisfy the operational constraints at the consumer localities while restoring power supply. The feasibility of the developed algorithm for service restoration demonstrated on several distribution networks with fast and effective convergence of the results of this technique helps to find the efficient operational planning of the EPDS. Copyright © 2007 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.206","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51062215","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 new game theory-based solution methodology for generation maintenance strategy 一种新的基于博弈论的发电维护策略求解方法

European Transactions on Electrical Power Pub Date : 2009-03-01 DOI: 10.1002/ETEP.208

D. Jia, Haozhong Cheng, Wenjun Zhang, Zechun Hu, Jianyong Yan, Ming Chen

引用次数: 19

Optimal measurement placement for security constrained state estimation using hybrid genetic algorithm and simulated annealing 基于混合遗传算法和模拟退火的安全约束状态估计的最优测量布置

European Transactions on Electrical Power Pub Date : 2009-03-01 DOI: 10.1002/ETEP.204

T. Kerdchuen, W. Ongsakul

引用次数: 9

Probabilistic approach to voltage stability analysis with load uncertainty considered 考虑负荷不确定性的电压稳定分析的概率方法

European Transactions on Electrical Power Pub Date : 2009-03-01 DOI: 10.1002/ETEP.207

Bei Wu, Yan Zhang, M. J. Chen

引用次数: 12

New formulation and analysis of the system planning expansion model 新的系统规划可拓模型的制定与分析

European Transactions on Electrical Power Pub Date : 2009-03-01 DOI: 10.1002/ETEP.210

A. Sadegheih

{"title":"New formulation and analysis of the system planning expansion model","authors":"A. Sadegheih","doi":"10.1002/ETEP.210","DOIUrl":"https://doi.org/10.1002/ETEP.210","url":null,"abstract":"In this paper, an electrical power transmission network planning expansion is formulated for mixed-integer programming, a genetic algorithm and tabu search (TS). Compared with other optimisation methods, GA's are suitable for traversing large search spaces since they can do this relatively rapidly and because the use of mutation diverts the method away from local minima, which will tend to become more common as the search space increases in size. GA's give an excellent trade-off between solution quality and computing time and flexibility for taking into account specific constraints in real situations. TS has emerged as a new, highly efficient, search paradigm for finding quality solutions to combinatorial problems. It is characterised by gathering knowledge during the search, and subsequently profiting from this knowledge. The attractiveness of the technique comes from its ability to escape local optimality. The cost function of this problem consists of the capital investment cost in discrete form, the cost of transmission losses and the power generation costs. The DC load flow equations for the network are embedded in the constraints of the mathematical model to avoid sub-optimal solutions that can arise if the enforcement of such constraints is done in an indirect way. The solution of the model gives the best line additions, and also provides information regarding the optimal generation at each generation point. This method of solution is demonstrated on the expansion of a 10 bus-bar system to 18 bus-bars. Finally, an empirical analysis of the effects of parameter values on genetic algorithm performance is tested. Copyright © 2007 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2009-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.210","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51062622","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: 7

Dynamic COI‐tracking concept for the control of generators in multi‐machine power systems 用于多机电力系统中发电机控制的动态COI跟踪概念

European Transactions on Electrical Power Pub Date : 2008-01-01 DOI: 10.1002/ETEP.163

Z. Lan, D. Gan, Libao Shi, Y. Ni, T. Bi

{"title":"Dynamic COI‐tracking concept for the control of generators in multi‐machine power systems","authors":"Z. Lan, D. Gan, Libao Shi, Y. Ni, T. Bi","doi":"10.1002/ETEP.163","DOIUrl":"https://doi.org/10.1002/ETEP.163","url":null,"abstract":"In the conventional excitation control concept, the power angle and frequency of a generator are driven to a pre-designed operation point after the fault occurs. It is named as Constant Point Stabilization (CPS) concept in this paper. A novel concept, called dynamic Center of Inertia (COI)-tracking concept is proposed in this paper. In the concept, the power angle and frequency of each generator track the dynamic COI of the power system. Compared to CPS concept, a salient feature the suggested dynamic COI-tracking concept has is that the generators are not restricted to constant angle point or frequency any longer but track the dynamic COI trajectory of the system to keep synchronous in rotor angle and frequency. Wide area measurement system (WAMS) will be used to transform COI signals to each generator. The time delay within a certain limit of WAMS signals is permitted. To make comparison between the two concepts, the control system models based on the two concepts are first established. Then, using the back-stepping method, two robust controllers are designed to achieve the control objectives of the two concepts. At last, dynamic simulations are carried out based on a 2-area-4-machine test power system, and the control effects of the two controllers, together with that of the conventional AVR + PSS excitation system, are compared. Copyright © 2007 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.163","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51059092","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

Wavelet‐based approach for high impedance fault detection of high voltage transmission line 基于小波的高压输电线路高阻抗故障检测方法

European Transactions on Electrical Power Pub Date : 2008-01-01 DOI: 10.1002/ETEP.169

T. Nengling, C. Jiajia

{"title":"Wavelet‐based approach for high impedance fault detection of high voltage transmission line","authors":"T. Nengling, C. Jiajia","doi":"10.1002/ETEP.169","DOIUrl":"https://doi.org/10.1002/ETEP.169","url":null,"abstract":"This paper presents a new method for high impedance single-phase ground fault (HIF) detection based on wavelet transform (WT) in the high voltage transmission line. As high impedance single-phase ground faults usually have low fault currents, it cannot be easily detected by the conventional protection. The voltages and currents vary simultaneously when a ground fault occurs in the transmission lines, even if it is grounded with a high impedance. Therefore, the signals measured by the protective device contain significant transient components. They have much more fault information than the steady components. With the WT the modulus maxima of the zero sequence current, the faulted phase current, and the zero sequence voltage present special characteristics which can be used to detect HIF. The new scheme can also discriminate if the ground fault locates in the forward zone or the backward zone. The realization of the proposed protection device is also described in this paper. Both simulation and field results show that the scheme can detect HIF with high reliability during all operating conditions. Copyright © 2007 John Wiley & Sons, Ltd.","PeriodicalId":50474,"journal":{"name":"European Transactions on Electrical Power","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2008-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1002/ETEP.169","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"51059382","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: 14

UPFC sizing by means of an economically correct secure economic dispatch in a deregulated power market scenario 在解除管制的电力市场情景下，通过经济正确的安全经济调度来确定UPFC的规模

European Transactions on Electrical Power Pub Date : 2008-01-01 DOI: 10.1002/ETEP.166

D. Menniti, A. Pinnarelli, N. Scordino, N. Sorrentino

引用次数: 4

Short‐term scheduling of thermal units: emission constraints and trade‐off curves 热机组的短期调度:排放约束和权衡曲线

European Transactions on Electrical Power Pub Date : 2008-01-01 DOI: 10.1002/ETEP.148

J. Catalão, S. Mariano, V. Mendes, L. Ferreira

引用次数: 62

Stability analysis and simulation of a single‐phase voltage source UPS inverter with two‐stage cascade output filter 带两级级联输出滤波器的单相电压源UPS逆变器的稳定性分析与仿真

European Transactions on Electrical Power Pub Date : 2008-01-01 DOI: 10.1002/ETEP.160

J. Faiz, G. Shahgholian, M. Ehsan

引用次数: 26