Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672098
Guangyu Lin, P. Yi, Liangqi Si, Ting Zhu, Xiuchen Jiang, Guojie Li, M. Begovic
Electric Vehicles (EVs) can be used as a medium between the battery energy stored in EVs and the power grid through Vehicle-to-Grid (V2G). Combined with the characteristic that vehicles are mobile, EVs can provide a natural energy transmission system called EV energy network. This paper analyzes the features of energy routes in the EV energy network and studies the impact of traffic congestion on the EV energy distribution networks. Based on the characteristics of traffic congestion in the urban, sporadic congestion algorithm and recurring congestion algorithm are presented to simulate in a model of the EV energy network. Additionally, energy degree (ED) and energy source available rate (ESAR) are defined to reflect the current state of the EV energy network. The real-world transporting data in Manhattan and Pioneer Valley Transit Authority (PVTA) is utilized to analyze the robustness of the proposed EV energy network.
{"title":"Robustness analysis on electric vehicle energy distribution networks","authors":"Guangyu Lin, P. Yi, Liangqi Si, Ting Zhu, Xiuchen Jiang, Guojie Li, M. Begovic","doi":"10.1109/PESMG.2013.6672098","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672098","url":null,"abstract":"Electric Vehicles (EVs) can be used as a medium between the battery energy stored in EVs and the power grid through Vehicle-to-Grid (V2G). Combined with the characteristic that vehicles are mobile, EVs can provide a natural energy transmission system called EV energy network. This paper analyzes the features of energy routes in the EV energy network and studies the impact of traffic congestion on the EV energy distribution networks. Based on the characteristics of traffic congestion in the urban, sporadic congestion algorithm and recurring congestion algorithm are presented to simulate in a model of the EV energy network. Additionally, energy degree (ED) and energy source available rate (ESAR) are defined to reflect the current state of the EV energy network. The real-world transporting data in Manhattan and Pioneer Valley Transit Authority (PVTA) is utilized to analyze the robustness of the proposed EV energy network.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130798719","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}
Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672837
Man Xu, Zongxiang Lu, Ying Qiao, Ningbo Wang, Shiyuan Zhou, Yanhong Ma
The precision of wind power forecast system (abbr. WPFS) depends on many field situations, such as geographical conditions, the quality of numerical weather prediction (abbr. NWP), and historical data acquisition. The forecast models and their specifications differ case by case. It is necessary to provide any efficient methodology to design an adaptive WPFS. This paper analyzes, evaluates and then handles the affecting factors, including the space and temporal limitation of NWP, the misplacement error of grid point forecasts and the regression of wind power output model. A systematical solution which is independent on forecasting models is then proposed and verified to improve the adaptability of WPFS that consists of pre-processing of input data, setup of wind power output model and forecast error evaluation.
{"title":"Study on the adaptability of day-ahead wind power forecast system for on-site use","authors":"Man Xu, Zongxiang Lu, Ying Qiao, Ningbo Wang, Shiyuan Zhou, Yanhong Ma","doi":"10.1109/PESMG.2013.6672837","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672837","url":null,"abstract":"The precision of wind power forecast system (abbr. WPFS) depends on many field situations, such as geographical conditions, the quality of numerical weather prediction (abbr. NWP), and historical data acquisition. The forecast models and their specifications differ case by case. It is necessary to provide any efficient methodology to design an adaptive WPFS. This paper analyzes, evaluates and then handles the affecting factors, including the space and temporal limitation of NWP, the misplacement error of grid point forecasts and the regression of wind power output model. A systematical solution which is independent on forecasting models is then proposed and verified to improve the adaptability of WPFS that consists of pre-processing of input data, setup of wind power output model and forecast error evaluation.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"102 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131221743","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}
Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672922
Daniel S. Siqueira, L. Alberto, N. Bretas
In this paper the technique of non-linear control based on the Generalized Energy Function is employed to design controllers for TCSC devices. This technique, recently developed in [1], extends the ideas of Control Lyapunov Function for a larger class of problems. Besides allowing the controller design, the technique provides estimates of the stability region of the system and therefore can support the systematic evaluation of the controller contribution to the system transient stability.
{"title":"Generalized Control Energy Function for controllable TCSC devices","authors":"Daniel S. Siqueira, L. Alberto, N. Bretas","doi":"10.1109/PESMG.2013.6672922","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672922","url":null,"abstract":"In this paper the technique of non-linear control based on the Generalized Energy Function is employed to design controllers for TCSC devices. This technique, recently developed in [1], extends the ideas of Control Lyapunov Function for a larger class of problems. Besides allowing the controller design, the technique provides estimates of the stability region of the system and therefore can support the systematic evaluation of the controller contribution to the system transient stability.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131089776","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}
Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672622
F. Zavoda, Rejean Lemire, C. Abbey, Y. Brissette
Sensors and controllers of major distribution equipment (reclosers, voltage regulators, switches and cap banks) are fundamental building blocks in the development of Smart Grids and Smart Distribution Applications (SDA). There are significant benefits for utilities and manufacturers that can be achieved through the standardization of these devices. In turn, this would facilitate the deployment of smart distribution applications (SDA). The sensor-controller pair is the foundation upon which Smart Grid applications are built. Standardization, interoperability, and interchangeability of different controllers and the way they connect to the system are integral to realization of the Smart Distribution Vision. This paper describes an initiative aimed at the development of a generic technical specification of a standardized universal controller, based on a modular concept. The authors present the rationale behind the project and the vision as it relates to a flexible smart distribution grid.
{"title":"Universal controller for Smart Grid","authors":"F. Zavoda, Rejean Lemire, C. Abbey, Y. Brissette","doi":"10.1109/PESMG.2013.6672622","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672622","url":null,"abstract":"Sensors and controllers of major distribution equipment (reclosers, voltage regulators, switches and cap banks) are fundamental building blocks in the development of Smart Grids and Smart Distribution Applications (SDA). There are significant benefits for utilities and manufacturers that can be achieved through the standardization of these devices. In turn, this would facilitate the deployment of smart distribution applications (SDA). The sensor-controller pair is the foundation upon which Smart Grid applications are built. Standardization, interoperability, and interchangeability of different controllers and the way they connect to the system are integral to realization of the Smart Distribution Vision. This paper describes an initiative aimed at the development of a generic technical specification of a standardized universal controller, based on a modular concept. The authors present the rationale behind the project and the vision as it relates to a flexible smart distribution grid.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133555474","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}
As the penetration of electric vehicles (EVs) increases, it is required to consider both power grid and traffic information when analyzing EVs distribution and charging loads. This paper presents a hybrid simulation method for real-time operation of EVs, charging stations, traffic and the grid. It first describes the traffic model and electric model and builds a hybrid model for EVs to combine these two models. The paper presents a detailed timing simulation method afterwards. After generating EV inflows and traffic flows in different places and setting EV's charging behavior, EVs' State of Charge (SOC) and spatial moving and charging stations' working states can be viewed through simulation. An example is presented to illustrate the impact of EV inflows on the charging power of charging stations. This method can be applied in other researches, and it will be utilized for future research work on the interaction between power grid and traffic network.
随着电动汽车普及率的提高，在分析电动汽车分布和充电负荷时，需要同时考虑电网和交通信息。本文提出了一种电动汽车、充电站、交通和电网实时运行的混合仿真方法。首先对交通模型和电动模型进行了描述，并建立了电动汽车的混合动力模型，将这两种模型结合起来。随后给出了详细的时序仿真方法。在生成不同地点的电动汽车流入量和交通流量，设置电动汽车充电行为后，通过仿真可以查看电动汽车的荷电状态(State of Charge, SOC)以及空间移动和充电站的工作状态。通过实例分析了电动汽车流入对充电站充电功率的影响。该方法可应用于其他研究中，为今后电网与交通网络相互作用的研究工作提供参考。
{"title":"A hybrid simulation method for EVs' operation considering power grid and traffic information","authors":"Shujun Xin, Qinglai Guo, Hongbin Sun, Zhengshuo Li, Boming Zhang, Shaobo Zhang","doi":"10.1109/PESMG.2013.6672762","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672762","url":null,"abstract":"As the penetration of electric vehicles (EVs) increases, it is required to consider both power grid and traffic information when analyzing EVs distribution and charging loads. This paper presents a hybrid simulation method for real-time operation of EVs, charging stations, traffic and the grid. It first describes the traffic model and electric model and builds a hybrid model for EVs to combine these two models. The paper presents a detailed timing simulation method afterwards. After generating EV inflows and traffic flows in different places and setting EV's charging behavior, EVs' State of Charge (SOC) and spatial moving and charging stations' working states can be viewed through simulation. An example is presented to illustrate the impact of EV inflows on the charging power of charging stations. This method can be applied in other researches, and it will be utilized for future research work on the interaction between power grid and traffic network.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133417347","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}
Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672309
K. Holbert, L. Grable, Amy Overbay, Brandon Nzekwe
Declining interest and enrollments in STEM related fields are an impetus to engage precollege students and teachers in science and engineering activities. Concerns about climate change and green energy sources provide platforms to connect today's students to tomorrow's careers in the electric power industry. Three facets of the NSF-supported FREEDM ERC precollege programs are described: (1) a Research Experience for Teachers, (2) a Young Scholars commuter program for high school students, and (3) summer science camps for middle school students. Assessment results for the fourth year of the effort at four different university campuses are presented.
{"title":"FREEDM ERC precollege programs: Motivating careers in the electric power industry","authors":"K. Holbert, L. Grable, Amy Overbay, Brandon Nzekwe","doi":"10.1109/PESMG.2013.6672309","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672309","url":null,"abstract":"Declining interest and enrollments in STEM related fields are an impetus to engage precollege students and teachers in science and engineering activities. Concerns about climate change and green energy sources provide platforms to connect today's students to tomorrow's careers in the electric power industry. Three facets of the NSF-supported FREEDM ERC precollege programs are described: (1) a Research Experience for Teachers, (2) a Young Scholars commuter program for high school students, and (3) summer science camps for middle school students. Assessment results for the fourth year of the effort at four different university campuses are presented.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132446828","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}
Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672191
F. Berrutti, Á. Giusto, M. Artenstein
This paper presents a qualitative development for assess the main factors affecting the damping of the oscillation modes when wind farms based on variable speed turbines are incorporated in power systems. It will be shown that the main effects that determine the degradation or improvement of mode damping due to wind power generation lies in the alteration of the operating points of the involved synchronous generators and the nature of the oscillatory modes affected. It is also analyzed the effect of reactive power exchange between wind farms and the power grid on oscillatory behaviour. Such developments are validated by performing simulations on a 2017 peak scenario for the Uruguayan transmission system, which shows a strong interaction between the pre-existent hydro power plants and future wind farms to be incorporated1.
{"title":"Impact of variable speed wind farms on power systems oscillations","authors":"F. Berrutti, Á. Giusto, M. Artenstein","doi":"10.1109/PESMG.2013.6672191","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672191","url":null,"abstract":"This paper presents a qualitative development for assess the main factors affecting the damping of the oscillation modes when wind farms based on variable speed turbines are incorporated in power systems. It will be shown that the main effects that determine the degradation or improvement of mode damping due to wind power generation lies in the alteration of the operating points of the involved synchronous generators and the nature of the oscillatory modes affected. It is also analyzed the effect of reactive power exchange between wind farms and the power grid on oscillatory behaviour. Such developments are validated by performing simulations on a 2017 peak scenario for the Uruguayan transmission system, which shows a strong interaction between the pre-existent hydro power plants and future wind farms to be incorporated1.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132763696","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}
Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672712
H. J. Lu, G. Chang, H. Su
Precisely forecasting the flicker level is important for drastic voltage fluctuations associated with the rapid reactive power consumptions of electric arc furnace (EAF) loads. This paper presents a prediction model based on grey theory combined with radial basis function neural network (RBFNN) for the forecast of flicker severity caused by the operation of a dc and an ac EAF loads, respectively. Test results based on the proposed model are compared with two other neural network methods. It shows that more accurate forecast is achieved for the flicker prediction based on the proposed method.
{"title":"A new method for flicker severity forecast","authors":"H. J. Lu, G. Chang, H. Su","doi":"10.1109/PESMG.2013.6672712","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672712","url":null,"abstract":"Precisely forecasting the flicker level is important for drastic voltage fluctuations associated with the rapid reactive power consumptions of electric arc furnace (EAF) loads. This paper presents a prediction model based on grey theory combined with radial basis function neural network (RBFNN) for the forecast of flicker severity caused by the operation of a dc and an ac EAF loads, respectively. Test results based on the proposed model are compared with two other neural network methods. It shows that more accurate forecast is achieved for the flicker prediction based on the proposed method.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133247941","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}
Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672725
H. Zheng, Shuhui Li, C. Zang, Weijian Zheng
A substantial increase of solar photovoltaic (PV) power generators have taken place in recent years. The intermittent nature of PV energy and quick fluctuations of load demanding require energy storage units (ESU) which generally consists of storage battery and supercapacitor (SC). The development of coordinated control tools for next-generation PV installations, along with ESU, provides flexibility to distribution system operators. The objective of the control of this hybrid PV and energy storage system is to supply the desired active and reactive power to the grid and at the same time to maintain the stability of the dc-link voltage of the PV and energy storage system through coordinated control of power electronic converters. This paper investigates three different coordinated control structures and approaches for grid integration of PV array, battery storage, and SC. A computational experiment system is developed by using SimPowerSystems and Opal-RT real-time simulation technology. The performance of the coordinated control techniques is evaluated.
{"title":"Coordinated control for grid integration of PV array, battery storage, and supercapacitor","authors":"H. Zheng, Shuhui Li, C. Zang, Weijian Zheng","doi":"10.1109/PESMG.2013.6672725","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672725","url":null,"abstract":"A substantial increase of solar photovoltaic (PV) power generators have taken place in recent years. The intermittent nature of PV energy and quick fluctuations of load demanding require energy storage units (ESU) which generally consists of storage battery and supercapacitor (SC). The development of coordinated control tools for next-generation PV installations, along with ESU, provides flexibility to distribution system operators. The objective of the control of this hybrid PV and energy storage system is to supply the desired active and reactive power to the grid and at the same time to maintain the stability of the dc-link voltage of the PV and energy storage system through coordinated control of power electronic converters. This paper investigates three different coordinated control structures and approaches for grid integration of PV array, battery storage, and SC. A computational experiment system is developed by using SimPowerSystems and Opal-RT real-time simulation technology. The performance of the coordinated control techniques is evaluated.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128824834","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}
Pub Date : 2013-07-21DOI: 10.1109/PESMG.2013.6672500
B. Badrzadeh
This paper discusses the criteria and processes for acceptance testing and validation of stability type models of the wind turbines and wind power plants (WPPs). Some of the modeling issues experienced in the Australian National Electricity Market (NEM) are discussed. These include suitability of the stability models when connected to weak power systems with low short circuit ratio, and for investigation of unbalanced disturbances. The procedure for validation of stability models of WPPs is then outlined, and an example of on-site model validation test is presented. The process presented for acceptance testing and validation of WPPs will be valid for solar Photovoltaic plants.
{"title":"Acceptance testing and validation of Stability Type models of wind power plants","authors":"B. Badrzadeh","doi":"10.1109/PESMG.2013.6672500","DOIUrl":"https://doi.org/10.1109/PESMG.2013.6672500","url":null,"abstract":"This paper discusses the criteria and processes for acceptance testing and validation of stability type models of the wind turbines and wind power plants (WPPs). Some of the modeling issues experienced in the Australian National Electricity Market (NEM) are discussed. These include suitability of the stability models when connected to weak power systems with low short circuit ratio, and for investigation of unbalanced disturbances. The procedure for validation of stability models of WPPs is then outlined, and an example of on-site model validation test is presented. The process presented for acceptance testing and validation of WPPs will be valid for solar Photovoltaic plants.","PeriodicalId":433870,"journal":{"name":"2013 IEEE Power & Energy Society General Meeting","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2013-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115197788","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}
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