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2014 Power and Energy Conference at Illinois (PECI)最新文献

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Modeling of vanadium redox battery by field analysis and neural network approach 基于场分析和神经网络的钒氧化还原电池建模
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804553
Xin Qiu, T. Nguyen, M. Crow, A. Elmore
{"title":"Modeling of vanadium redox battery by field analysis and neural network approach","authors":"Xin Qiu, T. Nguyen, M. Crow, A. Elmore","doi":"10.1109/PECI.2014.6804553","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804553","url":null,"abstract":"The vanadium redox flow battery is well-suited for renewable energy applications. This paper studies VRB use within a microgrid system from a practical perspective. A reduced order circuit model of the VRB was introduced. Experimental field data are collected to estimate the key parameters of the VRB system. Methods of predicting major parasitic losses are proposed. Loss models include the circulation pumps and the HVAC system that regulates the environment of the VRB enclosure. The HVAC system can draw a significant amount of the VRB power considerably impacting its overall efficiency, but this is usually ignored by other theoretical models.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"17 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124786284","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
A prediction method for power frequency quality based on Bayesian theorem and uncertainty classification 基于贝叶斯定理和不确定性分类的工频质量预测方法
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804564
Yawei Wei, Shamina Hossain, H. Kirkham
{"title":"A prediction method for power frequency quality based on Bayesian theorem and uncertainty classification","authors":"Yawei Wei, Shamina Hossain, H. Kirkham","doi":"10.1109/PECI.2014.6804564","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804564","url":null,"abstract":"With the continuous concern on power system stability and increasing interesting on advanced PMU device application, the focus shifts from ordinary grid measurement data acquisition to system stability monitor and possible event forecast.Among these analysis, frequency quality and stability is always first priority. A proper prediction can help grid to adjust their operation quicker and increase the power reliability, however it still depend on the original data accuracy. In this paper, the proposed method presents a novel frequency quality detection and prediction method on the background of Bayesian theorem and BIPMs Guide to the expression of Uncertainty in Measurement (G.U.M). By analyzing the data stream from PMU in historical record, the proposed method draws an overall conclusion of system frequency quality with confidential level, uncertainty estimation and short time prediction value,which is easy to illustrate for control center operator. It has been tested using data from Michigan Tech Power Energy Lab. The preliminary DC signal tests the normal result for method validation. Testing results show this Bayesian-based prediction method has a great potential in power system frequency quality analysis and dynamic event prediction.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"381 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117086289","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
Microgrid frequency regulation using wind turbine controls 使用风力涡轮机控制的微电网频率调节
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804545
Kaitlyn J. Bunker, W. Weaver
{"title":"Microgrid frequency regulation using wind turbine controls","authors":"Kaitlyn J. Bunker, W. Weaver","doi":"10.1109/PECI.2014.6804545","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804545","url":null,"abstract":"This paper proposes a control system that uses wind energy to regulate the frequency of an islanded microgrid. The model used in both computer and hardware simulation includes a scaled representation of a microgrid that uses a permanent magnet AC (PMAC) machine and a variable resistance load. The wind turbine is represented by a DC machine as the prime mover connected with a PMAC generator. As the microgrid load changes the frequency of the system changes and the proposed control system regulates power from the wind turbine as necessary to correct the frequency and maintain a nominal value. Results of both computer simulation and hardware implementation show that wind energy can be used to maintain microgrid frequency in islanded operation.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"35 6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114278752","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
Reliable GPS-based timing for power systems: A multi-layered multi-receiver architecture 电力系统可靠的gps授时:多层多接收机架构
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804565
Liang Heng, J. Makela, A. Domínguez-García, R. Bobba, W. Sanders, G. Gao
{"title":"Reliable GPS-based timing for power systems: A multi-layered multi-receiver architecture","authors":"Liang Heng, J. Makela, A. Domínguez-García, R. Bobba, W. Sanders, G. Gao","doi":"10.1109/PECI.2014.6804565","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804565","url":null,"abstract":"Synchronized voltage and current phasor measurements provided by phasor measurement units (PMUs) have the potential to augment power system monitoring, control, and protection functions. PMUs use the Global Positioning System (GPS) to synchronize measurements across a wide geographical area. Unfortunately, low-received-power, unencrypted civil GPS signals are vulnerable to jamming and spoofing attacks. Accidental receiver malfunction can also lead to incorrect position/time solutions. This paper presents a multi-layered multi-receiver architecture that hardens GPS-based timing against jamming, spoofing, and receiver errors. Our architecture integrates eight countermeasures in all layers of receiver signal and data processing; most of the countermeasures exploit the static and networked nature of time reference receivers. We define five threat models, and qualitatively analyze the effectiveness of each countermeasure against each threat model. The analysis demonstrates that the redundant, independent but complementary countermeasures provide high reliability and robustness.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"284 ","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"113988997","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: 51
Effect of inverter-based DG penetration and control in hybrid microgrid dynamics and stability 基于逆变器的DG渗透与控制对混合微电网动态与稳定的影响
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804549
Jorge Elizondo, J. Kirtley
{"title":"Effect of inverter-based DG penetration and control in hybrid microgrid dynamics and stability","authors":"Jorge Elizondo, J. Kirtley","doi":"10.1109/PECI.2014.6804549","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804549","url":null,"abstract":"This paper presents a study on the effect of increasing the inverter-based Distributed Generators (DGs) penetration in the dynamics and stability of a hybrid Microgrid. An analysis is also done to compare different inverter control techniques as a way to reduce voltage and frequency variations after a disturbance. The purpose of this study is to compare Microgrids with different percentage of inverter penetration and propose methods to enhance stability. Results show that increasing penetration of inverters operated in slave mode, reduces stability. This is observed as oscillations and large settling times for voltage and frequency after disturbances such as islanding with power unbalance and fault-triggered islanding. Results also show that using droops in the inverter control loop can limit oscillations and reduce recovery times even beyond that of a system with large percentage of power generated with a synchronous machine. Finally, it is shown that if the inverter is operated so that its power factor matches that of the local loads, then stability increases.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127538189","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
Smart-grid-enabled distributed reactive power support with Conservation Voltage Reduction 智能电网启用分布式无功支持与保护电压降低
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804573
Hao Liu, T. Overbye
{"title":"Smart-grid-enabled distributed reactive power support with Conservation Voltage Reduction","authors":"Hao Liu, T. Overbye","doi":"10.1109/PECI.2014.6804573","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804573","url":null,"abstract":"As solar energy continues to increase in the current power grid, the reactive power support capability from photovoltaic grid-tie inverters may be used to regulate feeder voltage and reduce system losses on medium- and low-voltage distribution systems. The focus of this paper is to develop a smart-grid-enabled control algorithm that will determine the amount of reactive power injection or absorption required at each node to minimize the deviation from the control voltage level. Once the voltage level is achieved, implementing Conservation Voltage Reduction (CVR) further benefits the system by increasing energy saving. The method is tested on a modified IEEE 13 node feeder system in MATLAB and simulations are performed in OpenDSS using the same system to validate the results.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116588668","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
Stochastic processes in a grid-connected three-phase photovoltaic system 并网三相光伏系统的随机过程
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804543
O. Ajala, P. Sauer
{"title":"Stochastic processes in a grid-connected three-phase photovoltaic system","authors":"O. Ajala, P. Sauer","doi":"10.1109/PECI.2014.6804543","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804543","url":null,"abstract":"With appropriate control algorithms, grid-connected photovoltaic (PV) systems can provide real and reactive power to meet power system needs. However, the intermittency of solar irradiance and the stochastic nature of reactive power demand affect the dynamic performance of these systems. This paper presents a method for stochastic modeling and simulation of grid-connected three-phase photovoltaic systems. The state variables of concern are the real and reactive power delivered to the grid, and the line currents. The objective of this work is to model the statistics of the reactive power demand as a linear stochastic differential equation driven by a wiener process, model the solar irradiance and temperature as random variables, develop a dynamic performance stochastic model of the entire system, and ascertain the time evolution of the first and second moments of the state variables.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130684245","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
Implementation of Wind Turbine Generator models in the Power System Toolbox 风电机组模型在电力系统工具箱中的实现
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804546
F. Wilches-Bernal, J. Sanchez-Gasca, J. Chow
{"title":"Implementation of Wind Turbine Generator models in the Power System Toolbox","authors":"F. Wilches-Bernal, J. Sanchez-Gasca, J. Chow","doi":"10.1109/PECI.2014.6804546","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804546","url":null,"abstract":"The increase in wind generation levels in power system around the world and the fact that this type of generation interacts differently with the power network has made it necessary to study in detail the effects of its integration into the grid. In order to perform advanced study of the impact of wind energy, this research has implemented dynamic models of Wind Turbine Generator models of Type-3 (DFAG) and Type-4 (Full Converter) in the Power System Toolbox (PST), a MATLAB-based software package available for university research. Transient stability analysis through nonlinear simulation and small signal stability analysis are both possible for power systems with wind penetration using the implemented models.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"76 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120923064","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
Flying capacitor four-level H-Bridge converter 飞电容四电平h桥变换器
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804557
E. D. dos Santos, F. Gulpinar, E. D. da Silva
{"title":"Flying capacitor four-level H-Bridge converter","authors":"E. D. dos Santos, F. Gulpinar, E. D. da Silva","doi":"10.1109/PECI.2014.6804557","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804557","url":null,"abstract":"This paper proposes single-phase and three-phase four-level converters with a flying-capacitor leg and a conventional two-level leg per phase. The main advantages of the proposed converter are as following: (1) the same blocking voltage for all switches employed, (2) no capacitor midpoint connection needed (i.e., no low frequency current circulating in dc-link capacitors) and (3) reduced number of flying capacitor as compared to the conventional solution. Details regarding the operation of the configuration, flying capacitor voltage balance and modulation strategy are presented as well. Simulated results are presented to validate the theoretical expectations.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122829484","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 flexible low-cost photovoltaic solar panel emulation platform 柔性低成本光伏太阳能板仿真平台
2014 Power and Energy Conference at Illinois (PECI) Pub Date : 2014-04-24 DOI: 10.1109/PECI.2014.6804542
Antony Xenophontos, Jonathan Rarey, Alberto Trombetta, A. Bazzi
{"title":"A flexible low-cost photovoltaic solar panel emulation platform","authors":"Antony Xenophontos, Jonathan Rarey, Alberto Trombetta, A. Bazzi","doi":"10.1109/PECI.2014.6804542","DOIUrl":"https://doi.org/10.1109/PECI.2014.6804542","url":null,"abstract":"This paper introduces a new methodology to design a solar photovoltaic (PV) panel emulator. It draws on several analytical models of PV cells to accurately derive PV panel parameters which are not provided in the datasheet. These parameters are used to estimate the power and current curves for a given irradiance and temperature. A behavioral model is also implemented. PV cell degradation is integrated into the models for more flexibility in life-time and other reliability analyses. Also, partial shading is introduced into the models. The emulator is developed using standard LabVIEW software and libraries in conjunction with an off-the-shelf programmable power supply with no other peripheral hardware. A resistance tracking technique is then implemented to find the equivalent resistance of the panel in order to find the emulator output voltage. Experimental data is gathered to test the validity of the emulator results thus far and close correlation between the model and experimental results.","PeriodicalId":352005,"journal":{"name":"2014 Power and Energy Conference at Illinois (PECI)","volume":"123 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2014-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124520953","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: 25
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