PES T&D 2012最新文献_第3页

Transmission Efficiency Initiative: Four options studied by AEP and EPRI 变速器效率倡议:AEP和EPRI研究的四个方案

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281602

X. Liu, R. Gutman, C. Casablanca, P. Spurlock, J. Fleeman, A. del Rosso, N. Bhatt

{"title":"Transmission Efficiency Initiative: Four options studied by AEP and EPRI","authors":"X. Liu, R. Gutman, C. Casablanca, P. Spurlock, J. Fleeman, A. del Rosso, N. Bhatt","doi":"10.1109/TDC.2012.6281602","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281602","url":null,"abstract":"During 2008-2010, EPRI, in collaboration with the electric utility industry, identified various technologies to enhance the efficiency and utilization of the electric transmission system, and developed a framework, including approaches and tools, for assessing a broad array of benefits that can be derived from implementing these technologies. Since 2010, EPRI has worked with a number of utilities to develop and execute demonstration projects on these technologies. American Electric Power (AEP) actively participates in the Transmission Efficiency Initiative. AEP, along with EPRI has carried out four projects to assess energy savings, CO2 emission reductions and cost effectiveness of different technology options to reduce transmission system losses. For each of these projects, the benefit assessment approach and tools were selected based on the project scope, objective, and the available data and resources. This paper summarizes these four demonstration projects, primarily to document the methods used, the results obtained, and the lessons learned. These projects provide relevant information and learning on the economic and environmental benefits of implementing measures to improve transmission efficiency.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"23 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89026875","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

Microgrids availability evaluation using a Markov chain energy storage model: a comparison study in system architectures 基于马尔可夫链储能模型的微电网可用性评估:系统架构的比较研究

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281637

Junseok Song, M. C. Bozchalui, A. Kwasinski, R. Sharma

{"title":"Microgrids availability evaluation using a Markov chain energy storage model: a comparison study in system architectures","authors":"Junseok Song, M. C. Bozchalui, A. Kwasinski, R. Sharma","doi":"10.1109/TDC.2012.6281637","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281637","url":null,"abstract":"This paper investigates the effect of energy storage systems on the availability of microgrids with different architectures in the presence of renewable energy sources (RESs). When RESs are used for power generation within a microgrid, its availability may be reduced due to the intermittent nature of RESs. Thus, energy storage systems may be used as a solution to improve microgrids availability. Therefore, it is important to have a realistic evaluation of microgrids availability and to determine how added energy storage affects microgrids. Since energy storage system is not just a one-time-use reserve, charging and discharging processes in energy storage need to be considered when their availability is evaluated. Thus, a Markov chain model is used in this paper to properly represent the charging and discharging processes of energy storage systems, and minimal cut sets method is used in order to evaluate the availability of different microgrid architectures. Using the proposed method, availabilities of radial, ring, and ladder type microgrid architectures are evaluated in the presence of RESs and energy storage systems, and results are discussed.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"19 1","pages":"1-6"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83058205","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: 22

Comparison tests of high current shunts in high power laboratories in Asia with an STL reference shunt 亚洲高功率实验室的大电流分流与STL参考分流的比较试验

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281439

Y. Goda, Maeng Hyun Kim, An Wang, G. Sengupta

引用次数: 5

Demonstration results using Miyako Island Mega-Solar Demonstration Research Facility 利用宫古岛巨型太阳能示范研究设施的示范结果

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281519

M. Tamaki, S. Uehara, K. Takagi, T. Ichikawa

引用次数: 9

Heuristics: An attempt to identify catastrophic days 启发式:试图识别灾难性的日子

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281530

James D. Bouford

引用次数: 1

Optimal generation dispatch considering transmission congestion in electricity market with step-bidding prices 阶梯竞价电力市场中考虑输电拥塞的最优发电调度

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281457

P. Panyakaew, P. Damrongkulkamjorn

{"title":"Optimal generation dispatch considering transmission congestion in electricity market with step-bidding prices","authors":"P. Panyakaew, P. Damrongkulkamjorn","doi":"10.1109/TDC.2012.6281457","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281457","url":null,"abstract":"This paper presents a computational method for optimal power dispatch considering transmission congestion where the objective is to minimize the summation of step bidding prices from participated generators in electricity markets. The constraints are power balanced equations and system operating limits. The proposed method decomposes the problem formulation into two parts: the market dispatch part; and the power flow constraints part. The market dispatch part allocates the real power generations at each bus based on bidding prices with the considerations of generator capacity limits. If the dispatched real power generation of any generator were less than its minimum capacity limit, the market dispatch part would use the mixed integer programming technique to decide if that generator should be off or dispatched at minimum limit. The real power generations resulting from the market dispatch part are then passed to the power flow constraints part to check if they cause any system congestion. The market dispatch would be recomputed if any congestion occurred. The whole algorithm finds the optimal solution when the results from the market dispatch part no longer cause any transmission or operational congestion. The proposed algorithm is tested on a modified IEEE 14 bus system in which it is able to optimally redispatch the participated generators to release the transmission congestion. The proposed algorithm can be considered a practical and non-approximated approach that successfully reaches the optimal solutions of market-related optimal power flow.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"13 1","pages":"1-7"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90436404","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

Gas insulated transformer application for an environmentally-friendly power station upgrade 气体绝缘变压器应用于环保电站的升级改造

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281489

Y. Kontani, T. Kobayashi, Y. Tamura, T. Buhr, P. M. Thompson

引用次数: 2

Effects of GIC on power transformers and power systems GIC对电力变压器和电力系统的影响

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281595

R. Girgis, K. Vedante

{"title":"Effects of GIC on power transformers and power systems","authors":"R. Girgis, K. Vedante","doi":"10.1109/TDC.2012.6281595","DOIUrl":"https://doi.org/10.1109/TDC.2012.6281595","url":null,"abstract":"There is some misconception in the electric power industry today that geo - magnetically induced currents (GIC) have caused, and would cause, significant damage to the majority of large and medium power transformers installed on power grids in North America and around the world. The purpose of this paper is to present, both qualitatively and quantitatively, the true effect of GIC on power transformers, based on thorough knowledge of power transformer design and performance. The paper also provides concise explanation of the cases of transformer failure/overheating reported in the published literature to have been caused by GIC currents. The paper demonstrates that, because of the nature of the GIC currents, the great majority of power transformers would not experience much overheating or damage due to even high levels of GIC. Only some specific transformers could suffer some winding damage due to high winding circulating currents if exposed to high levels of GIC. The paper also presents the real issue with GIC; namely, the narrow pulse of the magnetizing current which results from part - cycle, semi - saturation of transformer cores when subjected to high levels of GIC currents. This one current pulse/cycle could cause relays and capacitive components in power systems, such as SVC (s), to trip, which may contribute to grid instability. Also, the current pulse is associated with 2nd and higher order harmonics. As a result, resonance may occur, differential relays may operate, and stability of the grid may be compromised.","PeriodicalId":19873,"journal":{"name":"PES T&D 2012","volume":"129 4 1","pages":"1-8"},"PeriodicalIF":0.0,"publicationDate":"2012-05-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74947708","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: 82

Voltage regulation in distribution system utilizing electric vehicles and communication 利用电动汽车和通信的配电系统的电压调节

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281426

Y. Mitsukuri, R. Hara, H. Kita, E. Kamiya, N. Hiraiwa, E. Kogure

引用次数: 25

The impact of solar photovoltaic generation on balancing requirements in the southern Nevada system 太阳能光伏发电对南内华达州系统平衡需求的影响

PES T&D 2012 Pub Date : 2012-05-07 DOI: 10.1109/TDC.2012.6281606

Jian Ma, Shuai Lu, R. Hafen, P. Etingov, Y. Makarov, V. Chadliev

引用次数: 11