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Autonomous load sharing between converters and generators in microgrids 微电网中变流器和发电机之间的自主负荷分担
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039415
C. Sao, P. Lehn
{"title":"Autonomous load sharing between converters and generators in microgrids","authors":"C. Sao, P. Lehn","doi":"10.1109/PES.2011.6039415","DOIUrl":"https://doi.org/10.1109/PES.2011.6039415","url":null,"abstract":"This paper presents a voltage-power /frequency-reactive power (VP/FQ) cross droop control scheme that allows multiple voltage source converters (VSCs) to operate in parallel with conventional generators in a microgrid. Each current controlled VSC in such a microgrid has its own VP/FQ cross droop controller that sets its current references to regulate the voltage and frequency of a common microgrid bus. By drooping the voltage reference of each controller against its reactive power output, multiple VP/FQ cross droop controllers jointly regulate the microgrid voltage while sharing a common reactive load with one another and with conventional generators in the same microgrid. Similarly, by drooping the frequency reference of each controller against its real power output, multiple VP/FQ cross droop controllers jointly regulate the microgrid frequency while sharing the real load. Simulation results are provided to validate the VP/FQ cross droop control scheme.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130710878","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
Power system islanding detection & identification using topology approach and decision tree 基于拓扑和决策树的电力系统孤岛检测与识别
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039088
Rui Sun, Zhongyu Wu, V. Centeno
{"title":"Power system islanding detection & identification using topology approach and decision tree","authors":"Rui Sun, Zhongyu Wu, V. Centeno","doi":"10.1109/PES.2011.6039088","DOIUrl":"https://doi.org/10.1109/PES.2011.6039088","url":null,"abstract":"Power system islanding contingency has always been one of the most severe wide area system failures. The recent Hurricane Gustav landed in west coast in 2008 was one exact case to illuminate the importance and severity of this kind of contingencies. Longtime the researches of islanding situations focus on studying the coherence groups of the generations under an islanding contingency. In this paper, a new method in detecting power system islanding contingencies using both the system's topological structure and real-time system dynamic state variables is presented and tested. An islanding severity index concept is given for ranking the severity of the islanding cases.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130856719","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: 29
ESB networks Smart Grid demonstration pilot ESB网络智能电网示范试点
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6038948
A. Walsh, T. Fallon
{"title":"ESB networks Smart Grid demonstration pilot","authors":"A. Walsh, T. Fallon","doi":"10.1109/PES.2011.6038948","DOIUrl":"https://doi.org/10.1109/PES.2011.6038948","url":null,"abstract":"ESB Networks approach to SmartGrids has been targeted at how SmartGrid developments can facilitate the delivery of : (a) reduced carbon emissions (b) increased competitiveness (c) increased fuel security i.e. less reliance on imported fossil fuel The Smart Network is the intrinsic link connecting clean thermal generation and distributed renewables through an efficient Grid/Network to engaged customers using new technologies. Smart Networks principals have been at the core of ESB Networks investment decisions, including the lifetime cost of losses and continuity implications, prior to the recent refocusing on Smart Grid. The advancement of a smarter network for ESB Networks will be evaluated on these same principals. Therefore technical and economical assessment of new technologies/operations will be critical to wider roll out. The demonstration project includes four core strands: — Distribution Connected Windfarms & MicroGeneration — Smart Green circuits. — Smart Meter Customer Behavior Trials — Electric Vehicles","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"98 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131027349","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
A study on dynamic behavior of coal-fired thermal power plant during significant system frequency rise after system separation 燃煤火电厂分离后系统频率显著上升时的动态行为研究
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039350
K. Yamashita, Ryota Minami, T. Inoue, T. Ohno, H. Ichimiya, Hiroaki Kamei
{"title":"A study on dynamic behavior of coal-fired thermal power plant during significant system frequency rise after system separation","authors":"K. Yamashita, Ryota Minami, T. Inoue, T. Ohno, H. Ichimiya, Hiroaki Kamei","doi":"10.1109/PES.2011.6039350","DOIUrl":"https://doi.org/10.1109/PES.2011.6039350","url":null,"abstract":"Power plants are increasingly located far from demand centers in Japan due to siting difficulties. As a result, these power plants are connected to a weak part of the network where severe contingencies could separate them from the main grid. This is a particular concern for coal-fired thermal power plants because of their larger footprints and environmental impact. Coal-fired thermal power plants, which have a relatively slow frequency response, can account for a majority of generation in an islanded system. In order to establish countermeasures for this problem and to maintain stable operation of the islanded system, the authors have developed models of coal-fired thermal power plants for system studies. This paper describes important findings obtained from analyses using the developed models, such as the necessity of modeling the power plant control system including main steam pressure dynamics which can limit the governor response to bring back frequency.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"79 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131078095","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
Multi-kernel support vector classifier for fault diagnosis of transformers 变压器故障诊断的多核支持向量分类器
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039052
Y. Yin, Junpeng Zhan, C. Guo, Q. Wu, J. M. Zhang
{"title":"Multi-kernel support vector classifier for fault diagnosis of transformers","authors":"Y. Yin, Junpeng Zhan, C. Guo, Q. Wu, J. M. Zhang","doi":"10.1109/PES.2011.6039052","DOIUrl":"https://doi.org/10.1109/PES.2011.6039052","url":null,"abstract":"Dissolved gas analysis (DGA) has proved to be one of the most useful techniques to detect the incipient faults of power transformers. This paper presents a novel method named multi-kernel support vector classifier (MKSVC), to analyze the DGA for fault diagnosis of transformers. Different from the conventional support vector machine (SVM), MKSVC uses a combined kernel formed through a linear combination of several basis kernels. In MKSVC, each basis kernel extracts a specific type of information from the training data, providing a partial description of the data. Given many partial descriptions of the data, a convex optimization is obtained by a linear combination. Thus, the learning problem can be solved by iteratively computing this optimization problem. The MKSVC method is evaluated using 318 fault data in comparison with several commonly used methods. The diagnostic results show that the diagnostic accuracy of MKSVC prevail those of the commonly used methods.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132828253","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
A utility connected microgrid based on power emulators 基于功率仿真器的公用事业连接微电网
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039045
O. Gomis‐Bellmunt, A. Sumper, A. Colet-Subirachs, Albert Ruiz-Alvarez, Felipe Alvarez-Cuevas-Figuerola, A. Sudriá-Andreu
{"title":"A utility connected microgrid based on power emulators","authors":"O. Gomis‐Bellmunt, A. Sumper, A. Colet-Subirachs, Albert Ruiz-Alvarez, Felipe Alvarez-Cuevas-Figuerola, A. Sudriá-Andreu","doi":"10.1109/PES.2011.6039045","DOIUrl":"https://doi.org/10.1109/PES.2011.6039045","url":null,"abstract":"A utility connected microgrid based on power emulators is presented. The microgrid has been developed in the Catalonia Institute for Energy Research (IREC), Barcelona, Spain and applied to the ”Smart City” project (led by the utility Endesa) which will be implemented in the near future in Màlaga, Spain. The microgrid is composed of different nodes configurable as renewable or conventional generators, energy storage systems or controllable or non-controllable loads. These different configurations are emulated by a power converter which can be parameterized to behave as any given generation, storage or load node. The emulators are connected to voltage sourced converters (VSC) which are connected to the microgrid. The VSCs have been designed in the framework of the project and feature independent control of active and reactive power. Active and reactive power references are provided by a higher lever energy management system which is based on i-Nodes and i-Sockets. The i-Nodes manage the microgrid and communicate with i-Sockets using IEC61850. i-Sockets control individual nodes of the microgrid and communicate with VSCs by means of CAN. The microgrid can be controlled using centralized or distributed control.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132834470","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: 10
Bibliography of FACTS: 1998 IEEE working group report 事实书目:1998年IEEE工作组报告
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039869
I. Axente, R. Varma, W. Litzenberger
{"title":"Bibliography of FACTS: 1998 IEEE working group report","authors":"I. Axente, R. Varma, W. Litzenberger","doi":"10.1109/PES.2011.6039869","DOIUrl":"https://doi.org/10.1109/PES.2011.6039869","url":null,"abstract":"This paper presents a Bibliography of FACTS technology mainly for the year 1998. Papers published/presented in Journals and Conferences in later part of 1997, which appeared on search engines only in the year 1998, are also included in this Bibliography. It provides a listing of various journal and conference papers in this area.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"53 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132873885","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
Assessing the reliability impacts of wind energy 评估风能的可靠性影响
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039248
R. Ramakumar
{"title":"Assessing the reliability impacts of wind energy","authors":"R. Ramakumar","doi":"10.1109/PES.2011.6039248","DOIUrl":"https://doi.org/10.1109/PES.2011.6039248","url":null,"abstract":"Electrical output of wind electric conversion systems (WECS) is stochastic and has characteristics significantly different from those of conventional (coal, oil, natural gas, nuclear and hydro) generation units. However, their entry into global power grids is expanding rapidly due to a variety of considerations. Assessing the impacts of wind energy on the overall reliability of the power system continues to be an important endeavor. It can range from detailed complex computations to simplified approaches that yield acceptable and useable results. This presentation will succinctly summarize the activities undertaken at Oklahoma State University in this area dating back to the late seventies.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"383 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133363546","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
Specialist power engineering programs for the rapid development of new graduate capabilities 专门为电力工程专业毕业生提供快速发展的新能力
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039132
P. Wolfs, S. Islam
{"title":"Specialist power engineering programs for the rapid development of new graduate capabilities","authors":"P. Wolfs, S. Islam","doi":"10.1109/PES.2011.6039132","DOIUrl":"https://doi.org/10.1109/PES.2011.6039132","url":null,"abstract":"A specialist graduate program, the Master of Engineering Science (Electrical Utility Engineering), has been developed to allow new graduates joining the transmission and distribution industry to undertake a structured program of study to support their early career development. The course work program contains modules that focus on the technical design issues encountered by new graduates and an industry focused project. The course work is arranged in four-week modules that are often delivered by industry based lecturers. Assessment is primarily through industry based case study assignments. In many instances industry partners elect to automatically enrol new graduates into the program as a part of their Graduate Development Program. The paper will assess the effectiveness of the program over the past four years.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"253 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133557835","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
Damping of electromechanical oscillations by VSC-HVDC active power modulation with supplementary wams based modal LQG controller 基于补充热的VSC-HVDC有功功率调制模态LQG控制器对机电振荡的抑制
2011 IEEE Power and Energy Society General Meeting Pub Date : 2011-07-24 DOI: 10.1109/PES.2011.6039046
R. Preece, A. Almutairi, O. Marjanovic, J. Milanović
{"title":"Damping of electromechanical oscillations by VSC-HVDC active power modulation with supplementary wams based modal LQG controller","authors":"R. Preece, A. Almutairi, O. Marjanovic, J. Milanović","doi":"10.1109/PES.2011.6039046","DOIUrl":"https://doi.org/10.1109/PES.2011.6039046","url":null,"abstract":"This paper presents a Multi Input Single Output (MISO) Modal Linear Quadratic Gaussian (MLQG) Power Oscillation Damping (POD) controller for Voltage Source Converter based HVDC systems. Applying this technique to a small (four machine) test network incorporating parallel HVDC/AC transmission has lead to improved damping of electromechanical modes compared with a traditional Power System Stabilizer (PSS) based controller structure. Furthermore, the MLQG controller has demonstrated greater robustness to varying operating conditions. The performance of the proposed control structure is assessed through small and large disturbance analysis.","PeriodicalId":159104,"journal":{"name":"2011 IEEE Power and Energy Society General Meeting","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2011-07-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133690506","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: 23
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