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Solving Capacitor Placement Problems in Distribution Systems Using Genetic Algorithms 用遗传算法求解配电系统中电容器布置问题
Electric Machines and Power Systems Pub Date : 1999-03-01 DOI: 10.1080/073135699269244
T. Ghose, S. Goswami, S. K. Basu
{"title":"Solving Capacitor Placement Problems in Distribution Systems Using Genetic Algorithms","authors":"T. Ghose, S. Goswami, S. K. Basu","doi":"10.1080/073135699269244","DOIUrl":"https://doi.org/10.1080/073135699269244","url":null,"abstract":"Genetic algorithm has been used to solve the problem of capacitor placement in power distribution systems. A new composition of the genetic string has been proposed for the coding of the capacitor placement problem. The proposed genetic string represents both the optimum location and the size of the capacitor. A number of modifications have also been proposed to improve the performance of the simple genetic algorithm in solving the capacitor placement problem. Test results have been presented in support of the superiority of the proposed modifications.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"134 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114669408","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: 26
Modeling and experimental study of 3-phase short-circuits of a double-cage induction machine 双笼型感应电机三相短路建模与实验研究
Electric Machines and Power Systems Pub Date : 1999-03-01 DOI: 10.1080/073135699269190
R. Nicolas, Ivanes Marcel, Diallo Demba, J. Piotr
{"title":"Modeling and experimental study of 3-phase short-circuits of a double-cage induction machine","authors":"R. Nicolas, Ivanes Marcel, Diallo Demba, J. Piotr","doi":"10.1080/073135699269190","DOIUrl":"https://doi.org/10.1080/073135699269190","url":null,"abstract":"Three-phase short-circuits of the induction machine yields to high levels of stress in an induction traction drive. To study these operations, the authors propose to model the machine by a multiple cage equivalent circuit. This enables us to take into account the deep bar effect with accuracy. The identification of the equivalent circuit and its validation are carried out experimentally for a 30-kW double-cage induction motor.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129587368","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
Rehabilitation of Loaded Power Systems for Loss Reduction and Security Enhancement 负荷电力系统的修复以减少损耗和提高安全性
Electric Machines and Power Systems Pub Date : 1999-03-01 DOI: 10.1080/073135699269253
S. Farrag
{"title":"Rehabilitation of Loaded Power Systems for Loss Reduction and Security Enhancement","authors":"S. Farrag","doi":"10.1080/073135699269253","DOIUrl":"https://doi.org/10.1080/073135699269253","url":null,"abstract":"This paper concerns the optimal expansion planning required for a power system within a time horizon. The objective is to ensure that the continuous growth of load demand is satisfied at a reliable level of network performance. Line loss participation factors and line stability levels are introduced to determine the most lossy and weakest lines in the network. Furthermore, an algorithm for identifying the weakest and most vulnerable load buses is incorporated. The solution procedure can easily determine when, where, and how to install new lines and/or additional VAR sources as a corrective measure in order to minimize losses and enhance voltage stability of the system. The proposed method has been successfully applied to the solution of a number of test systems with different sizes. The IEEE 30-bus system is used to show the capability and feasibility of the methodology.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129017611","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
Power System Dynamic Stabilizer Design Using Optimal Path Estimation Method 基于最优路径估计法的电力系统动态稳定器设计
Electric Machines and Power Systems Pub Date : 1999-03-01 DOI: 10.1080/073135699269208
T. L. Huang, S. Chang, Y. Hsiao
{"title":"Power System Dynamic Stabilizer Design Using Optimal Path Estimation Method","authors":"T. L. Huang, S. Chang, Y. Hsiao","doi":"10.1080/073135699269208","DOIUrl":"https://doi.org/10.1080/073135699269208","url":null,"abstract":"This paper addresses a new approach, the optimal path estimation method (OPEM), to implement the time optimal bang-bang control. OPEM is based on feedback information obtained by estimating the distance from the present state to the switching surface along the optimal trajectory. A fuzzy algorithm is used for the implementation of the control logic. The advantages of the proposed method are illustrated by numerical simulations of a multimachine infinite-bus power system.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121648759","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
New DSP method for investigating dynamic behavior of Power Systems 电力系统动态特性研究的DSP新方法
Electric Machines and Power Systems Pub Date : 1999-03-01 DOI: 10.1080/073135699269235
V. Backmutsky, A. Shenkman, G. Vaisman, V. Zmudikov, D. Kottick, M. Blau
{"title":"New DSP method for investigating dynamic behavior of Power Systems","authors":"V. Backmutsky, A. Shenkman, G. Vaisman, V. Zmudikov, D. Kottick, M. Blau","doi":"10.1080/073135699269235","DOIUrl":"https://doi.org/10.1080/073135699269235","url":null,"abstract":"A new, simple Digital Signal Processing (DSP) method for investigating dynamic behavior of Power Systems is considered, which combines Integrating Zero Crossing (IZC) and Quasisynchronous Sample Interpolation (QSI). It offers accurate (about 0.001%) and fast (30-40 ms) tracking, estimating and predicting the actual power-line frequency and its deviation, as well as spectral harmonic components of the actual power line voltages and currents with high accuracies (0.02%-0.05%), due to almost complete elimination of aliasing and leakage effects. The results of a computer simulation of this method and of many real-life experiments are given and explained. The proposed method (IZC, QSI) has been compared to other DSP methods used for Power System investigation and applied in Underfrequency Relay Protection (URP); Load Shedding and Restoration (LSR); Acquisition, Monitoring, and Control (AMC); Diagnostics and Quality Analysis (DQA); and in other industrial applications.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127730334","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
Fault Noise Based Approach to Phase Selection Using Wavelets Based Feature Extraction 基于故障噪声的小波特征提取相位选择方法
Electric Machines and Power Systems Pub Date : 1999-03-01 DOI: 10.1080/073135699269226
Y. Liao, S. Elangovan
{"title":"Fault Noise Based Approach to Phase Selection Using Wavelets Based Feature Extraction","authors":"Y. Liao, S. Elangovan","doi":"10.1080/073135699269226","DOIUrl":"https://doi.org/10.1080/073135699269226","url":null,"abstract":"Fault-generated high-frequency noise has been proven to be effective for faulted phase selection. A combined method using HF noise, fast Fourier transform (FFT), and neural networks (NN) for phase selection has been proposed previously; however, FFT and NN have some implicit disadvantages. This paper describes a HF noise based method for phase selection using wavelets based feature extraction. It is shown that the features extracted by wavelets transform (WT) have a more distinctive property than those extracted by FFT due to the good time and frequency localization characteristics of WT. As a result, the proposed method dispenses with the neural networks and hence is more reliable and simpler than the previous FFT-based method. Extensive simulation studies have been made to verify that the proposed approach is very powerful and apropos to phase selection.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"286 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114697222","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: 23
A Fuzzy Logic Based PSS Using a Standardized Rule Table 基于模糊逻辑的标准化规则表PSS
Electric Machines and Power Systems Pub Date : 1999-02-01 DOI: 10.1080/073135699269316
M. Sanaye-Pasand, O. Malik
{"title":"A Fuzzy Logic Based PSS Using a Standardized Rule Table","authors":"M. Sanaye-Pasand, O. Malik","doi":"10.1080/073135699269316","DOIUrl":"https://doi.org/10.1080/073135699269316","url":null,"abstract":"To achieve better performance for the controlled system, the rule table of a fuzzy logic based controller is often determined by trial and error. To simplify this time-consuming task, a standardized rule table that can be used in a fuzzy logic control design procedure is developed in this paper. To demonstrate its applicability, the design technique proposed in this paper is employed to design a fuzzy logic based power system stabilizer. Details of the design procedure and results of performance studies with the proposed stabilizer are given in the paper.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114341347","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
A Comparison of Resonant Converter Topologies with Three and Four Energy Storage Elements for Automatic Inductive Charging Application 用于自动感应充电的三、四储能元件谐振变换器拓扑结构的比较
Electric Machines and Power Systems Pub Date : 1999-02-01 DOI: 10.1080/073135699269262
R. Laouamer, J. Ferrieux, H. Benqassmi, O. Normand, N. Buchheit
{"title":"A Comparison of Resonant Converter Topologies with Three and Four Energy Storage Elements for Automatic Inductive Charging Application","authors":"R. Laouamer, J. Ferrieux, H. Benqassmi, O. Normand, N. Buchheit","doi":"10.1080/073135699269262","DOIUrl":"https://doi.org/10.1080/073135699269262","url":null,"abstract":"The full-bridge series-resonant, parallel-resonant, series-parallel type SP-LLCC and parallel resonant type PRC-LLCC converters are compared for use in automatic inductive charging applications. Three order and four order models must be considered if, as in the case of this paper, the effect of magnetizing inductance and leakage inductance of the inductive coupler is considered. Analysis and breadboard results show that the series-parallel resonant converter type LLCC with capacitive output filter while maintaining excellent efficiency. A useful analysis technique based on steady-state analysis and first harmonic approach is also introduced. The topology selection criteria are based on the major application goal: minimum size, high switching frequency which is necessary to reduce the values of the reactive components, and high efficiency is needed to avoid thermal constraints.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"52 5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133919543","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: 10
Magnetic circuit of a synchronous reluctance motor 同步磁阻电动机的磁路
Electric Machines and Power Systems Pub Date : 1999-02-01 DOI: 10.1080/073135699269280
P. Ciufo, D. Platt, B. Perera
{"title":"Magnetic circuit of a synchronous reluctance motor","authors":"P. Ciufo, D. Platt, B. Perera","doi":"10.1080/073135699269280","DOIUrl":"https://doi.org/10.1080/073135699269280","url":null,"abstract":"This paper presents a model of the magnetic circuit for an axially laminated synchronous reluctance motor. The basis of the modelling technique is the determination of a value for an equivalent \"q-channel\" reluctance. This reluctance contains all the effects of paths available to q -axis flux through the rotor body. Expressions for the distribution of airgap and other motor fluxes have been developed from basic analyses involving mmf and continuity of flux. The foundations of all of these expressions are the physical parameters of the motor. The equations developed have been applied to a 370W motor and the results from models presented are compared with results obtained from a finite element analysis of the same motor where good agreement has been achieved.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134146729","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
Thermal Modelling of Induction Motors Based on Accurate Loss Density Distribution 基于精确损耗密度分布的感应电机热建模
Electric Machines and Power Systems Pub Date : 1999-02-01 DOI: 10.1080/073135699269325
A. Bousbaine
{"title":"Thermal Modelling of Induction Motors Based on Accurate Loss Density Distribution","authors":"A. Bousbaine","doi":"10.1080/073135699269325","DOIUrl":"https://doi.org/10.1080/073135699269325","url":null,"abstract":"The ability to predict the temperature rise of a machine prior to its construction is as important as the ability to predict its performance. For a complex heat flow systems, such as electrical machines, the lumped parameter network technique still plays a very important role for the solution of heat flow problems. This paper discusses the development of the thermal model, taking into account the different material types and complicated geometries within the machine, as well as the different modes of heat transfer. However, to predict an accurate temperature distribution requires the knowledge of loss distribution in the machine. Using the temperature-time method a more accurate loss distribution is obtained. The model performance is validated against measured results obtained for a 4 kW, 3-phase, 4-pole, 415 V totally enclosed fan cooled induction motor.","PeriodicalId":262115,"journal":{"name":"Electric Machines and Power Systems","volume":"30 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129144347","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: 26
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