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2012 Electric Power Quality and Supply Reliability最新文献

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SOC estimation for Li-Ion batteries based on equivalent circuit diagrams and the application of a Kalman filter 基于等效电路图和卡尔曼滤波的锂离子电池荷电状态估计
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256238
A. Rahmoun, H. Biechl, A. Rosin
{"title":"SOC estimation for Li-Ion batteries based on equivalent circuit diagrams and the application of a Kalman filter","authors":"A. Rahmoun, H. Biechl, A. Rosin","doi":"10.1109/PQ.2012.6256238","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256238","url":null,"abstract":"Batteries play an essential role in electric vehicles (EV), and obtain more and more importance also in smart grids due to the non-constant power generation of renewable energy sources. In order to achieve an optimum operation of systems with batteries it is necessary to develop accurate mathematical models for the calculation of the state of charge (SOC), taking into account the individual operation by the user. This paper presents the fundamentals of a method how to determine SOC of lithiumion batteries on the basis of two different equivalent circuit diagrams and an Extended Kalman Filter (EKF). The comparison between measurement and computation results shows a good accordance. The accurate determination of SOC of a battery in an EV is of high importance for the prediction of the distance that can be driven. In the first step the dependency of these parameters on the temperature and on the battery age is neglected.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115270944","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: 20
Air-core inductive current sensor for fast transients measurements in distribution networks 用于配电网快速瞬态测量的空芯电感电流传感器
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256234
L. Kutt, M. Shafiq, J. Jarvik, M. Lehtonen, J. Kilter
{"title":"Air-core inductive current sensor for fast transients measurements in distribution networks","authors":"L. Kutt, M. Shafiq, J. Jarvik, M. Lehtonen, J. Kilter","doi":"10.1109/PQ.2012.6256234","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256234","url":null,"abstract":"Observation of fast transients in power networks can provide some of the most valuable information. The transients from partial discharge can provide the information about the power line insulation state; fault-produced fast transients can also provide information about the fault or problematic section location. For measurement of fast transients, there would also need to be a very fast sensor, as the pulsed measurements could require the bandwidth range reaching in the tens of MHz range. In this paper, a sensor for fast transients measurements is presented and tested. While very simple, this sensor can offer very good performance while being inexpensive and robust. The results of performance verification measurements show very good results when testing with high-frequency pulse source, presenting the potential of such sensor.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125172145","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
Earth fault localization with the help of the fast-pulse-detection-method using the new high-power-current-injection (HPCI) 基于新型大功率注入电流(HPCI)的快速脉冲检测方法的接地故障定位
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256231
G. Druml, C. Raunig, P. Schegner, L. Fickert
{"title":"Earth fault localization with the help of the fast-pulse-detection-method using the new high-power-current-injection (HPCI)","authors":"G. Druml, C. Raunig, P. Schegner, L. Fickert","doi":"10.1109/PQ.2012.6256231","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256231","url":null,"abstract":"With today's increased demands on grid operation management new methods for earth fault localization and detection are required. The earth fault localization should be performed as quick as possible and under the condition, that the fault current at the fault location will not be significantly increased. The pulse detection method is widespread because only a current measurement is needed and the implementation is simple. With the installation of more than one relays along a line an in-depth localization of the earth fault is possible. Boundary conditions, which will be described in detail in the paper, will not always lead to an increased resolution into depth with an increased number of relays. In this paper a new and fast method based on a thyristor-controlled high-power-current-injection (HPCI) will be presented. Compared with traditional pulse detection, this method has a lot of advantages, which will be described in the paper.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"372 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123664978","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: 6
Supply voltage level optimization in industrial low voltage networks 工业低压电网供电电压水平优化
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256219
T. Vinnal, K. Janson, H. Kalda, T. Sakkos
{"title":"Supply voltage level optimization in industrial low voltage networks","authors":"T. Vinnal, K. Janson, H. Kalda, T. Sakkos","doi":"10.1109/PQ.2012.6256219","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256219","url":null,"abstract":"This paper is focused on measurement and analysis of supply voltage level in low voltage industrial power systems in Estonia. A practical method for analysis of supply voltage quality parameters implementing stochastic theory is discussed. Measurement results of supply voltage quality parameters - voltage magnitude, voltage level and voltage sags in industrial 0.4 kV power systems of Estonia are shown. The impact of shunt capacitors for power factor correction upon supply voltage level is discussed.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131270940","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
Influences on safety issues for inverter supplied grid structures 对逆变供电电网结构安全问题的影响
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256211
T. Wieland, M. Aigner, E. Schmautzer, J. Pasker, L. Fickert
{"title":"Influences on safety issues for inverter supplied grid structures","authors":"T. Wieland, M. Aigner, E. Schmautzer, J. Pasker, L. Fickert","doi":"10.1109/PQ.2012.6256211","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256211","url":null,"abstract":"In the field of low voltage systems protection devices like fuses and residual current devices (RCDs) are generally implemented. Because of their high sensitivity residual current devices are very commonly used for protection against electric shock. A part for the fact that inverters may produce voltages with considerable harmonic content also RCDs deserves special attentions. Due to the increasing number of electrical equipment in the low voltage grid producing disturbing currents different RCD types (type AC, A and B) are investigated under certain conditions. For example the influence of disturbing non-sinusoidal, pulse-shaped currents or harmonics in the fault current regarding on the tripping current or on the tripping time of the RCD is analyzed.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"26 4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131350276","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
Dual scheme based mathematical modeling of Magnetically Controlled Shunt Reactors 6–500 kV 基于双方案的6 - 500kv磁控并联电抗器数学建模
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256197
Boris Bazilev, V. Bespalov, S. Dyagileva, P. Makarov, M. Makarova, B. Oleksyuk
{"title":"Dual scheme based mathematical modeling of Magnetically Controlled Shunt Reactors 6–500 kV","authors":"Boris Bazilev, V. Bespalov, S. Dyagileva, P. Makarov, M. Makarova, B. Oleksyuk","doi":"10.1109/PQ.2012.6256197","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256197","url":null,"abstract":"Topicality of mathematic modeling of Magnetically Controlled Shunt Reactors (MCSR) as a network element using common existing software elements is shown in the article. Principles of the MCSR dual scheme creation as a thyristor controlled reactor or a static var compensator (in case of modeling of Source of Reactive Power, including a MCSR and a capacitor bank) are explained. Principles of development the mathematic model of the MCSR dual scheme are demonstrated. Example of development and application of MCSR dual mathematical model for calculating steady-state modes of high-voltage electric grid is shown. The potential of the MCSR dual mathematic model application for development of the algorithm of MCSR (SRP) automatic control at the point of connection to electrical grid is assessed.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"95 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124608054","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: 9
The comparison of active and reactive magnetic couplers 有源和无源磁力耦合器的比较
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256194
B. Ose-Zaļā, V. Pugachov
{"title":"The comparison of active and reactive magnetic couplers","authors":"B. Ose-Zaļā, V. Pugachov","doi":"10.1109/PQ.2012.6256194","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256194","url":null,"abstract":"In this paper there are researched and compared three types of cylindrical magnetic couplers (MC): active MC, reactive MC with yoke and reactive MC without yoke. The comparison is made by the couplers' maximal mechanical torque, which is their main characteristic. The torque is calculated applying software QuickField by designing the magnetic field. The QuickField is based on the finite elements method. It is researched and recommended a new type of reactive MC.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120990716","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: 0
Comparison of wavelet and Fourier analysis in power quality 小波分析与傅立叶分析在电能质量中的比较
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256210
E. Fuchs, B. Trajanoska, Sarah Orhouzee, H. Renner
{"title":"Comparison of wavelet and Fourier analysis in power quality","authors":"E. Fuchs, B. Trajanoska, Sarah Orhouzee, H. Renner","doi":"10.1109/PQ.2012.6256210","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256210","url":null,"abstract":"To guarantee high power quality the monitoring of the power grid is essential part of the process. The secure the best possible supervision of the power quality novel methods for the detection of power quality disturbances have to be considered. State of the art of power quality monitoring in the case of harmonics is the Fourier Transform. This kind of transform is basically used for stationary signals. During the last years the wavelet analysis has found some acceptation in the power quality community. This kind of transform is especially used for transient signals. It has the advantage that the transformation allows information about the time and the frequency of the power quality disturbance. The aim of this paper is the comparison of different Fourier and wavelet algorithm. Especially the application on inter-harmonics, transient harmonics and high frequency harmonics in the range above 2 kHz is investigated. The advantages of the different algorithms shall be discussed. The paper will be a help for power quality experts to find the best algorithm out of a set of well-established and novel algorithms for their problems.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134010670","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: 16
Study and verification of a slow speed PM generator with outer rotor for small scale wind turbines 小型风力发电机外转子低速永磁发电机的研究与验证
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256198
A. Kilk, O. Kudrjavtsev
{"title":"Study and verification of a slow speed PM generator with outer rotor for small scale wind turbines","authors":"A. Kilk, O. Kudrjavtsev","doi":"10.1109/PQ.2012.6256198","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256198","url":null,"abstract":"This paper considers the study of a directly driven low-speed permanent magnet synchronous generator specially constructed for a vertical axis wind turbine. The studied PM generator with outer rotor construction offers an alternative to fix the wind turbine directly to the end-disk of rotor. As an advantage of the outer rotor PM generator construction it is easier and more reliable to fix the magnets on the rotor active surface. An analysis to optimize the active length of both stator magnetic core and air-gap has been presented. Cogging torque has been analyzed to reduce it by slot skewing. Electromagnetic simulations of the PM generator were performed by using finite element analysis and the SPEED software. A 5 kVA PM generator was designed, manufactured and tested. The test results of the prototype PM generator have been analyzed and compared with the calculated characteristics and data.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"119 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133205884","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: 9
Estimation of small scale HPP affect on distribution network reliability under market conditions 市场条件下小规模HPP对配电网可靠性影响的估计
2012 Electric Power Quality and Supply Reliability Pub Date : 2012-06-11 DOI: 10.1109/PQ.2012.6256216
A. Obusev, A. Lvov, A. Mutule
{"title":"Estimation of small scale HPP affect on distribution network reliability under market conditions","authors":"A. Obusev, A. Lvov, A. Mutule","doi":"10.1109/PQ.2012.6256216","DOIUrl":"https://doi.org/10.1109/PQ.2012.6256216","url":null,"abstract":"Mathematical model of small scale HPP was developed for simulation of HPP electricity production in market conditions. Paper also presents approach for evaluation of power supply reservation possibility in distribution network using small scale HPP that operates in liberalized market conditions. Proposed approach allows evaluate theoretical possibility of HPP to improve reliability of power supply of distribution network in case of HV substation outage. Calculations for example with real HPP and distribution network were performed using proposed approach. Results of calculations showed that amount of possible reserved energy using small scale HPP is strongly dependant on type of generator installed at HPP and usage of smart grid technologies in distribution network.","PeriodicalId":185013,"journal":{"name":"2012 Electric Power Quality and Supply Reliability","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116055533","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: 0
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