{"title":"A Matlab-Simulink flickermeter model for power quality studies","authors":"A. Bertola, G. Lazaroiu, M. Roscia, D. Zaninelli","doi":"10.1109/ICHQP.2004.1409444","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409444","url":null,"abstract":"The paper deals with the representation of the flickermeter operation in the Simulink software program. This can be useful in case of simulation studies related to power plants where flicker phenomenon can rise up due to the presence of heavy disturbing loads (i.e. arc furnaces). The standard block diagram of the flickermeter is analyzed and reproduced in software blocks dedicated to the modeling of its different components. A validation procedure on a real case is adopted for testing the proposed model.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"22 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":"132007570","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":"Saturated core reactor static compensator: computational versus experimental performance analysis","authors":"J.C. Oliveira, A. B. Vasconcellos, R. Apolonio","doi":"10.1109/ICHQP.2004.1409397","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409397","url":null,"abstract":"This paper presents theoretical considerations, as well as results related to computational and experimental implementation of a saturated core reactor static compensator (SCRSC). This equipment, together with its parallel and series capacitors, congregates the ability of dynamically absorbing or supplying reactive power as required by different applications. The main attraction related to this product, besides low cost and simplicity, is that its control is of intrinsic type. A time domain model implemented into a time domain computational simulator is used for theoretical investigations. The model validation is performed by means of a laboratory arrangement consisting of simplified electrical system and a saturated reactor compensator prototype. Typical theoretical and experimental system/compensator results are given to illustrate the overall behavior under voltage variations.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"114 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":"132052382","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":"Generation of harmonics and filtering in low voltage systems","authors":"A.M. Ddn, Z. Czira","doi":"10.1109/ICHQP.2004.1409367","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409367","url":null,"abstract":"The paper deals with the theory of harmonic generation and gives a brief summary of the possible filtering methods. Furthermore a low cost solution is given to solve an actual harmonic filtering and reactive power control in a low voltage system.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"12 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":"130442445","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":"Impact of distributed generation on voltage regulation by LTC transformer","authors":"C. Dai, Y. Baghzouz","doi":"10.1109/ICHQP.2004.1409450","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409450","url":null,"abstract":"Distributed Generator (DG) can cause over-voltages as well as under-voltages, depending on several factors including DG size and location, and method of voltage regulation. This paper addresses possible under-voltages when installing a DG on a feeder whose voltage is regulation by a LTC (load-tap changing) transformer with LDC (line drop compensator). Simple analytical expressions of voltage drop on a radial feeder with uniformly distributed load, and containing a DG unit, are derived. The analysis is illustrated by a numerical example that validates the accuracy of the analytical expressions.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"24 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":"133994031","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":"Harmonic problems produced from the use of adjustable speed drives in industrial plants: case study","authors":"A. Zobaa","doi":"10.1109/ICHQP.2004.1409320","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409320","url":null,"abstract":"Harmonics problems in industrial plants are created from a number of sources, and produce a variety of undesirable side effects, therefore it is important to understand all solutions that are available. Phase shifting and detuned filters will be reviewed as concepts for solving certain types of problems related to power quality. Both theoretical and a case study are presented.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"205 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":"133096816","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":"Benchmarking utilities for the impact of voltage sags on customers","authors":"H. Herath, V. Gosbell, S. Perera","doi":"10.1109/ICHQP.2004.1409393","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409393","url":null,"abstract":"Most utilities have increased their focus on voltage sags as the sags account for vast majority of recorded equipment trips. Although these events are not necessarily the most frequent, they have a tremendous economic impact on end-users. The process of benchmarking customer voltage sag levels generally requires voltage sag monitoring data for a period of minimum one year. This data can then be quantified to relate voltage sag performance with standardized limits for acceptable performance. This work suggests a methodology for benchmarking the impact of voltage sags on customers of different utilities by means of a three stage reporting procedure that covers a site, a network and a utility. This is followed by a simple method of defining a single sag index for a utility that deals with the average values across the utility which enable comparison of different utilities for their overall sag performance.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"15 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":"126557996","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}
J. Filho, J. Abreu, T. C. Oliveira, O. Carpinteiro, C. Rosa, F.A. Oliveira, R.P. Gomes, S.G. Carvalho, D.N. Goncalves
{"title":"A software for voltage sags strategic studies","authors":"J. Filho, J. Abreu, T. C. Oliveira, O. Carpinteiro, C. Rosa, F.A. Oliveira, R.P. Gomes, S.G. Carvalho, D.N. Goncalves","doi":"10.1109/ICHQP.2004.1409419","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409419","url":null,"abstract":"This work describes a software specially developed for strategic studies within power quality, more specifically voltage sags. First, the methodology to estimate the number and the characteristics of the disturbances is presented. Then, the software structure is briefly described. Finally, a case study is discussed.","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":"130876297","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":"EKF-and wavelet-based algorithms applied to harmonic detection for active shunt filters","authors":"F. Cupertino, M. Marinelli, L. Salvatore","doi":"10.1109/ICHQP.2004.1409442","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409442","url":null,"abstract":"This work presents a performance comparison among algorithms able to estimate in real-time the fundamental component of the current absorbed from the supply by a nonlinear load. This fundamental component can be used to calculate the current reference for an active shunt filter (ASF). The effectiveness of ASFs in reducing the harmonic contents of the supply currents is strictly related to the ability of an algorithm to give a reliable and accurate estimate of the harmonic contents of the load current both at steady-state and in transient conditions. We have considered algorithms based on the use of a synchronous rotating frame (SRF), wavelet analysis, and Kalman filter theory. In order to overcome the problem related to the choice of the covariance matrices of the Kalman filter-based algorithm we propose to use a genetic algorithm (GA) to perform an off-line automatic search for optimal parameters. Experimental results are presented considering a three-phase induction motor drive as nonlinear load.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"3 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":"127799787","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":"Primary and secondary indices for power quality (PQ) survey reporting","authors":"V. Gosbell, S. Perera, R. Barr, A. Baitch","doi":"10.1109/ICHQP.2004.1409392","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409392","url":null,"abstract":"Routine monitoring involves many PQ monitors at fixed sites with readings able to be interrogated remotely and downloaded to a central database. The amount of data for one year is large, and innovative methods are needed to ensure that it can give useful insights. Primary indices are proposed to show whether a site is acceptable to specified standards and are mainly based on 95% values. Secondary indices are proposed to give additional insights. For variations, indices are proposed to give a measure of the impact on customer equipment beyond that incorporated in standards. Sag secondary indices are defined to give insights as to the factors responsible for poor sag performance. Indicative maximum acceptable values are given for secondary indices based on a recent Australian survey of several distributors.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"2010 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":"114743160","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":"Advanced control of wind turbine-generators improve power system dynamic performance","authors":"N. Miller, E. Larsen, J. MacDowell","doi":"10.1109/ICHQP.2004.1409376","DOIUrl":"https://doi.org/10.1109/ICHQP.2004.1409376","url":null,"abstract":"There has been recent political pressure to develop and incorporate a higher percentage of renewable generation resources in today's demanding bulk power system. A result of this push for renewable energy is the advancement of wind generation and wind farm control technology. We are seeing greater numbers of large wind farms being built on land and off shore around the world. This work addresses some of the challenges (with proposed solutions) common throughout the wind generation industry today.","PeriodicalId":406398,"journal":{"name":"2004 11th International Conference on Harmonics and Quality of Power (IEEE Cat. No.04EX951)","volume":"35 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":"123677903","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}