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2012 IEEE Electrical Power and Energy Conference最新文献

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Numerical modelling of piezoelectric transformers for low frequency measurement and disturbance monitoring in power systems 电力系统低频测量和扰动监测用压电变压器的数值模拟
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474947
S. Lele, R. Sobot, T. Sidhu
{"title":"Numerical modelling of piezoelectric transformers for low frequency measurement and disturbance monitoring in power systems","authors":"S. Lele, R. Sobot, T. Sidhu","doi":"10.1109/EPEC.2012.6474947","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474947","url":null,"abstract":"We present a numerical model based on three-dimensional (3D) finite element modelling for the piezoelectric transformer (PT). The resonant frequency and low frequency regions of operation of PT for voltage sensing are discussed and experimental results are presented. Results from the numerical analysis are compared with these established results. Hence, a model suitable for low frequency voltage measurements and disturbance monitoring in power systems is proposed and developed with a scope for future design modifications.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121048239","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
Case study of wind turbine sourcing: Manufacturer selection criteria 风力涡轮机采购案例研究:制造商选择标准
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474953
J. Sarja, V. Halonen
{"title":"Case study of wind turbine sourcing: Manufacturer selection criteria","authors":"J. Sarja, V. Halonen","doi":"10.1109/EPEC.2012.6474953","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474953","url":null,"abstract":"Selection of the wind turbine manufacturer is naturally an important issue for wind energy companies when they build new wind farms. This paper describes the main factors by which wind energy companies choose their turbine manufacturers in a selected case region in Finland. The study was conducted using semi-structured interviews, for which the experts and decision makers of selected wind energy companies formed the focus group. During the analysis of the results it became clear that it was not possible to form a detailed and prioritized list of selection criteria, but still some general themes emerged. The main theme was the manufacturer and product reliability, and then the production volume, cost factors, availability factors, and the organization of maintenance in this order. Interestingly the arctic conditions of the selected case region did not play any significant role.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123713776","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: 5
Three phase saturated core fault current limiter performance with a floating neutral 采用浮动中性点的三相饱和铁心故障限流器性能
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474960
P. Commins, J. Moscrop
{"title":"Three phase saturated core fault current limiter performance with a floating neutral","authors":"P. Commins, J. Moscrop","doi":"10.1109/EPEC.2012.6474960","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474960","url":null,"abstract":"High power demands in electricity grids are continually increasing. This increasing trend coupled with the introduction of renewable energy sources, which require energy storage devices, poses significant problems to fault current levels. To improve network availability and grid resilience, superconducting saturated core Fault Current Limiters (FCL) are a suitable solution to reduce high fault currents in distribution level electricity grids. These devices have the characteristic of low impedance to the network during normal operation and high impedance during a fault event. However, this change in impedance is nonlinear and can lead to an imbalance in a three phase saturated core FCL. In this paper, the effects on fault current limiting performance due to the unbalanced instantaneous impedance between the 3 phases are investigated. The FCL fault transients of a grounded fault and a floating fault are simulated and compared using Finite Element Analysis (FEA) techniques. The presented results are also validated against a real world distribution level saturated core FCL under high power testing.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126725518","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: 13
Energy storage technologies for grid-connected and off-grid power system applications 并网和离网电力系统应用中的储能技术
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474970
F. Bhuiyan, A. Yazdani
{"title":"Energy storage technologies for grid-connected and off-grid power system applications","authors":"F. Bhuiyan, A. Yazdani","doi":"10.1109/EPEC.2012.6474970","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474970","url":null,"abstract":"This paper presents the updated status of energy storage (ES) technologies, and their technical and economical characteristics, so that, the best technology can be selected either for grid-connected or off-grid power system applications. Considering the wide range of applications, effective ways of storing and retrieving electrical energy remains a challenge. In addition to load variations, the ever-increasing penetration of intermittent renewable energies into the power system has presented the system with difficulties. Frequency regulation, voltage support, load leveling, peak shaving, economic dispatch, and production leveling represent the main power system applications, where ES can play an important role. In off-grid applications, ES can be used to balance the generation and consumption, to prevent frequency and voltage deviations. Due to the widespread use of battery energy storage (BES), the paper further presents various battery models, for power system economic analysis, reliability evaluation, and dynamic studies.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129857571","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: 54
The heat battery: Solar thermal energy storage for heating loads 热电池:为加热负荷储存太阳能热能
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474971
K. Mina
{"title":"The heat battery: Solar thermal energy storage for heating loads","authors":"K. Mina","doi":"10.1109/EPEC.2012.6474971","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474971","url":null,"abstract":"Similar to the storage of electrical energy, the Heat Battery is an energy carrier used to store solar energy in the thermal form. Solar energy is available few hours a day with different intensities with the possibilities of overcast days. However, the heating load is continuous for 240 days a year in Northern Ontario. The objective of this Applied Research project is to design a Heat Battery system that is able to receive energy converted from solar radiation and stored in the thermal form to be supplied on demand for residential space and water heating.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114850510","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
Smart energy monitoring and management system for industrial applications 工业应用智能能源监控管理系统
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474987
K. Collins, M. Mallick, G. Volpe, W. Morsi
{"title":"Smart energy monitoring and management system for industrial applications","authors":"K. Collins, M. Mallick, G. Volpe, W. Morsi","doi":"10.1109/EPEC.2012.6474987","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474987","url":null,"abstract":"The increasing demand especially in intensive industrial energy sectors dictates the development of smarter energy management systems. Industrial customers need to understand their energy consumption for the purpose of reducing energy costs, improving company ecological profile, and suggestive feedback scheduling. In this study, an industrial facility was used to demonstrate the importance of managing the energy consumption. To address this issue, an energy monitoring and management system is developed. First, the energy consumption of individual machines is identified. Second, a graphical user interface and operation scheduling are developed and the feedback is provided to the operator through fuzzy inference system. The results reveal significant savings in consumed energy and in dollars over time through the application of the proposed energy monitoring and management system (EMMS) into industrial facilities in intensive energy sectors.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127705838","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: 19
Optimal break-even distance for design of microgrids 微电网设计的最佳盈亏平衡距离
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474938
O. Hafez, Kankar Bhattacharya
{"title":"Optimal break-even distance for design of microgrids","authors":"O. Hafez, Kankar Bhattacharya","doi":"10.1109/EPEC.2012.6474938","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474938","url":null,"abstract":"Around the world there are many rural areas need access to electricity, extend the transmission line is one option. However, the long distance between the nearest main grid and the rural system as well as the costs of transmission line expansion rapidly increasing makes grid extension difficult, costly and economically unviable. Therefore, using microgrid technology with renewable energy options to meet electricity demand in remote locations becomes more attractive. In this paper the break-even distance which makes electricity from microgrid cost effective over the one form main grid is calculated. Moreover, the Net Present Costs (NPC) of both providing electricity through the microgrid and the main grid are calculated and compared. Five different cases including a diesel-only, a fully renewable-based, a diesel-renewable mixed, a solar-only, and a wind-only microgrid configurations are designed, to compare and evaluate their economics with the main grid. The well known energy modeling software for hybrid renewable energy systems, HOMER is used in the studies reported in this paper.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130275357","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: 7
Maximum power control of grid-connected DFIG-based wind systems 基于dfig的并网风电系统最大功率控制
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474963
A. Sylla, M. Doumbia
{"title":"Maximum power control of grid-connected DFIG-based wind systems","authors":"A. Sylla, M. Doumbia","doi":"10.1109/EPEC.2012.6474963","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474963","url":null,"abstract":"This paper presents maximum power control of doubly-fed induction generator (DFIG) based grid-connected wind energy system. The control system used a combination of MPPT method with pitch control to extract maximum power from the wind turbine. PWM hysteresis controller is used to control the back to back converter which output is connected to the utility grid through a multivariable filter. The overall wind system is theoretically analyzed and modeled in Matlab/Simulink/ SimPowerSystems environment. The grid-connected wind system's performances are evaluated.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"2010 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133542969","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
Characterization of harmonics in a utility feeder with PV distributed generation 光伏分布式电源馈线谐波特性研究
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474977
C. Crites, R. Varma, V. Sharma, B. Milroy
{"title":"Characterization of harmonics in a utility feeder with PV distributed generation","authors":"C. Crites, R. Varma, V. Sharma, B. Milroy","doi":"10.1109/EPEC.2012.6474977","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474977","url":null,"abstract":"A thorough analysis of the harmonic characteristics of a feeder in the London Hydro distribution system is presented in this paper. This feeder interconnects several solar photovoltaic (PV) arrays as well as two shunt capacitor banks. Harmonic measurements were acquired over one week at critical locations in the feeder. The analysis highlights higher than expected harmonic distortion levels, though still within limits established in IEEE 519-1992. Harmonics injected by the solar systems are partially additive, contributing approximately 0.1% to the total harmonic distortion (THD) at the feeder terminal. Significant 3rd, 5th, 7th, 9th, 11th, and 13th harmonic levels are discovered. Although the system is not subject to an immediate risk, future addition of inverter-based distributed generation (DG) coupled with possible resonant conditions presents the prospect of a rise in harmonic distortion levels beyond acceptable limits.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115763814","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: 7
Energy optimization and energy management of home via web services in smart grid 智能电网中基于网络服务的家庭能源优化和能源管理
2012 IEEE Electrical Power and Energy Conference Pub Date : 2012-10-01 DOI: 10.1109/EPEC.2012.6474940
A. Khan, H. Mouftah
{"title":"Energy optimization and energy management of home via web services in smart grid","authors":"A. Khan, H. Mouftah","doi":"10.1109/EPEC.2012.6474940","DOIUrl":"https://doi.org/10.1109/EPEC.2012.6474940","url":null,"abstract":"The smart home contains a network that connects home elements like sensors, HVAC (heating, ventilation, and air conditioning), appliances and thermostat. In our previous work, we proposed an approach that used web services to remotely interact with smart home elements in a smart grid environment. These interactions include adjusting the temperature or reading energy consumption. We assumed a smart home with a wireless sensor network based on Zigbee. There was a central computer that could access all home elements. Business Process Execution Language (BPEL) was used to implement the web service on central computer. In this paper, we enhance the system by including new features. The algorithm to sell energy back to the grid has been further developed. Furthermore, a function to optimize energy using dynamic programming is added to the system. The performance and advantage of the communications between user and home elements via web services are demonstrated.","PeriodicalId":118103,"journal":{"name":"2012 IEEE Electrical Power and Energy Conference","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123446786","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: 11
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