{"title":"Influence of DC ripple and commutation on the probabilistic harmonic models of multiple AC/DC converters","authors":"E. Nagandui, P. Guerin","doi":"10.1109/ICHQP.2004.1409424","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409424","url":null,"abstract":"This paper presents statistical description of the sum of injected harmonic currents produced by multiple AC/DC converters with randomly fluctuating loads using bivariate normal distribution method. The study of the influence of DC current ripple and commutation on the BND models of the sum of injected harmonic currents produced by multiple AC/DC converters with randomly fluctuating loads is carried out.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129047132","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}
R. Apolonio, J. C. de Oliveira, H. Bronzeado, A. B. de Vasconcellos
{"title":"Transformer controlled switching: a strategy proposal and laboratory validation","authors":"R. Apolonio, J. C. de Oliveira, H. Bronzeado, A. B. de Vasconcellos","doi":"10.1109/ICHQP.2004.1409425","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409425","url":null,"abstract":"This paper is related to the technology of power transformer modeling, computational program validation and a strategy proposal for controlling the switching phenomenon associated to inrush current in three-phase transformers. Both computational and laboratory studies are discussed so as to verify the representation and control adequacy and efficiency. The results emphasize the possibility of building up devices capable towards the elimination of the classical and undesirable transformer inrush current.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121088006","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}
{"title":"A novel control scheme for STATCOM using space vector modulation based hysteresis current controller","authors":"M. Marei, E. El-Saadany, M. Salama","doi":"10.1109/ICHQP.2004.1409329","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409329","url":null,"abstract":"At high power levels, low switching frequencies of solid-state devices results in diminished quality and distorted waveforms of both currents and voltages in FACTS applications. Normally, multiconverter schemes are used to deal with the above problem. This paper investigates a control system appropriate for STATCOM with reduced switching frequency. The proposed system comprises of a current regulated pulse width modulation CRPWM inverter using a novel space vector modulation SVM based hysteresis current controller HCC. The proposed methodology exploits the combined advantages of both HCC and SVM techniques. In attempt to reduce the number of switchings, a set of space vectors, including the zero vectors, is derived from two sets of hysteresis comparators. One comparator set has a larger hysteresis band resulting in considerable reduction in the number of switchings and thus improvements in the efficiency of the system. Simulation results obtained from PSCAD/EMTDC packages are used to illustrate the merits of the proposed scheme.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"86 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122431473","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}
{"title":"Study of harmonic cancellation between AC/DC converter currents","authors":"L. Sainz, J. J. Mesas, S. Herraiz","doi":"10.1109/ICHQP.2004.1409344","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409344","url":null,"abstract":"In this paper, cancellation between the harmonic currents of AC/DC converters is analyzed. The converter behavior is univocally characterized by two normalized parameters, and therefore their influence on the harmonic current phase angles is studied. This study allows harmonic cancellation to be determined as a function of the normalized parameters. The results of the study suggest that harmonic cancellation is easily obtained between singleand three-phase uncontrolled converters, but not so easily obtained between uncontrolled and controlled converters.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"142 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122581579","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}
{"title":"Selecting revenue meters for harmonic producing loads","authors":"R. Arseneau, M. B. Hughes","doi":"10.1109/ICHQP.2004.1409358","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409358","url":null,"abstract":"In the past few years the number of loads producing harmonic in the power system has grown. It is therefore important to know what impact harmonics will have on any new meter design and the overall rate structures and billing charges, particularly when these new meters are applied to the industrial clients where nonlinear loads are more common. This work investigates the performance of revenue meters based on existing definitions in comparison with the proposed fundamental only measuring method for waveforms recorded at a known harmonic producing load.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"153 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123320355","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}
{"title":"Practical issues of three-phase, three-wire, voltage source inverter-based shunt active power filters","authors":"A. Massoud, S. Finney, B. Williams","doi":"10.1109/ICHQP.2004.1409395","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409395","url":null,"abstract":"Research into active filters for the medium voltage range is ongoing. This paper presents general practical issues related to active power filters, specifically for the medium voltage range. Harmonic mitigation in power system occupied a great deal of research which can be achieved by two approaches, one considering fully controlled converter, which increases complexity and cost and the other using filters. Passive filters are cheap, simple and easy for maintenance.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"3 2","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114007604","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}
{"title":"Comparison of power definitions for reactive power compensation in nonsinusoidal conditions","authors":"M. Balci, M. H. Hocaoğlu","doi":"10.1109/ICHQP.2004.1409408","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409408","url":null,"abstract":"Since the beginning of the power systems, harmonic distortion have been existed due to nonlinear equipments such as; generators, transformers motors etc. Moreover, harmonic pollution on power systems has dramatically increased in parallel with large proliferation of power electronic devices. Consequently, the reactive power compensation in nonsinusoidal conditions became one of the most important problems in power systems. This paper presents a comparison on widely accepted power definitions in a simple single phase circuits with nonsinusoidal waveforms of voltage and/or currents by giving particular emphasis to the reactive power compensation.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"56 36","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120815837","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}
{"title":"A new perfomance factor for weighted harmonic distortion evaluation","authors":"M. Marinelli, P. Zanchetta, A. Dell'Aquila","doi":"10.1109/ICHQP.2004.1409443","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409443","url":null,"abstract":"In recent years the problem of controlling power quality is becoming more relevant because of the widespread use of nonlinear and time-varying loads. Nonlinear loads should not be considered the only cause of the detrimental effects related to power systems, but the responsibility for the power quality deterioration should be shared between supplier and customer. Traditional indices cannot give this kind of information since they are able to give only a measure of the current and voltage waveform nonconformities. The aim of this paper is to define a new weighted index that is able to separate the responsibility for harmonic distortion between the suppliers and the customers. Experimental results show the proposed index gives reliable information about the actual contribution of a nonlinear load in the process of deterioration of the voltage waveform at the point of common coupling.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"254 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117319128","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}
{"title":"Mathematical modeling of voltage dip transients in LV networks","authors":"H. Schau, A. Novitskiy, I. Konotop","doi":"10.1109/ICHQP.2004.1409440","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409440","url":null,"abstract":"Some methodical aspects of the mathematical modeling of voltage dips caused by short-circuits in LV electrical networks are considered in the paper. In the paper, the time domain simulation of the voltage dip transients is shown to be necessary for a correct assessment of prospective voltage dip characteristics in the electrical network. The fault arc as well as the current-limiting LV circuit breakers operation by short-circuits were modeled. It is shown that the transient behaviour by short-circuits of some types of electrical consumers such as asynchronous motors must be taken into account by the voltage dips considerations.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115071055","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}
{"title":"Determination of the optimum measuring positions for power quality monitoring","authors":"C. Ammer, H. Renner","doi":"10.1109/ICHQP.2004.1409435","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409435","url":null,"abstract":"Power quality characteristics and long term trends can be acquired by wide-area permanent measurements of the power quality in electric power supply networks. For economic reasons, redundant measuring results should be avoided. This paper introduces a procedure based on correlation and regression analysis of fictitious simulated measurement time series. Similar behavior of nodes will be detected, which allows to reduce the number of necessary measuring devices respectively determine their optimal installation site. At the present stage, this procedure is elaborated for the wide-area measurement of harmonic voltages. The application of this procedure on three different distribution networks is also presented in this paper.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2004-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115228465","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}