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2015 50th International Universities Power Engineering Conference (UPEC)最新文献

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Technological basis for compromise of interests at voltage regulation in electric grids 电网调压中利益妥协的技术基础
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339780
A. Fishov, I. Klavsuts, D. Klavsuts, Marina V. Khayrullina
{"title":"Technological basis for compromise of interests at voltage regulation in electric grids","authors":"A. Fishov, I. Klavsuts, D. Klavsuts, Marina V. Khayrullina","doi":"10.1109/UPEC.2015.7339780","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339780","url":null,"abstract":"A solution is presented to the task of voltage regulation in distributing electric grids in the situation of the contrariety of interests between power consumers, grid companies and grid generation. A system of decentralized voltage regulation of multi-agent type is offered, providing compromise voltage in power grids with the use of universal rules of behavior by every regulator with obligatory control of the mode in the adjusting area of the grid.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"44 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130156590","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
Multi-area economic dispatch using Hybrid Cuckoo search algorithm 基于混合布谷鸟搜索算法的多区域经济调度
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339777
K. P. Nguyen, N. D. Dinh, G. Fujita
{"title":"Multi-area economic dispatch using Hybrid Cuckoo search algorithm","authors":"K. P. Nguyen, N. D. Dinh, G. Fujita","doi":"10.1109/UPEC.2015.7339777","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339777","url":null,"abstract":"This paper proposes a Hybrid Cuckoo search algorithm to solve Multi-area economic dispatch problem (MAED). Hybrid Cuckoo search algorithm is a combination of the Cuckoo search algorithm and Teaching-learning-based optimization, where the learner phase of TLBO is added to improve performance of Cuckoo eggs. The proposed method has been applied for solving three tested cases of Multi-area economic dispatch problem. The objective of this problem is to minimize a total generation cost while satisfying generator operational constraints and tie- line constraints. The proposed method has been compared with the conventional Cuckoo search algorithm and Teaching-learning-based optimization to obtain its effectiveness. Numerical results show that the proposed method gives better solutions than two compared methods with high performance.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131077955","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
Energy storage systems: A review of the technology and its application in power systems 储能技术及其在电力系统中的应用综述
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339794
Jamie C. Beardsall, C. Gould, M. Al-Tai
{"title":"Energy storage systems: A review of the technology and its application in power systems","authors":"Jamie C. Beardsall, C. Gould, M. Al-Tai","doi":"10.1109/UPEC.2015.7339794","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339794","url":null,"abstract":"Increasing implementation of renewable energy sources within power systems means that the use of energy storage technologies will be ever more important for system stability and power quality purposes. A range of energy storage technologies currently exist, ranging from low-power, short term technologies such as capacitors to long-term high power systems such as Pumped Hydro. Future developments such as the use of Carbon Nanotube technology within super-capacitors look set to bring improvements in power density, efficiency and lifetime.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"239 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126814870","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
Reliability evaluation of protection system in smart substation based on process layer network 基于过程层网络的智能变电站保护系统可靠性评估
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339916
F. Xiao, Zhe Zhang, Xianggen Yin
{"title":"Reliability evaluation of protection system in smart substation based on process layer network","authors":"F. Xiao, Zhe Zhang, Xianggen Yin","doi":"10.1109/UPEC.2015.7339916","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339916","url":null,"abstract":"There are many forms of network structures in the process of smart substation layer. It is significant to research the process layer's reliability under different network structures of relay protection system for the network structure selection of process layer and engineering application. Based on the digitized substation relay protection system structure characteristic, this paper puts forward a reliability analysis method for protection system. The protection system is divided into sampling subsystem and trip subsystem and their fault tree models are established respectively. The method comprehensively considers the equipment failure and repair process and makes use of the fault tree and Monte Carlo simulation to solve the reliability of protection system. Finally, the proposed method is used to evaluate the reliability of the protection system with different network structures. The main elements affecting the reliability of protection system are given by the analysis of the component probability importance.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"236 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121067008","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: 8
Evolution of smart buildings. A Romanian case 智能建筑的演变。罗马尼亚的一个案例
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339802
Monica Mancasi, R. Vatu, Oana Ceaki, R. Porumb, G. Seritan
{"title":"Evolution of smart buildings. A Romanian case","authors":"Monica Mancasi, R. Vatu, Oana Ceaki, R. Porumb, G. Seritan","doi":"10.1109/UPEC.2015.7339802","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339802","url":null,"abstract":"The constant evolution of electricity grids towards smart grids is changing the paradigm. The intelligent layer which is added over the physical one is bringing a change in the mode in which the electricity is provided. Hence, the electricity providers are shifting their business from product-centered to service-centered ones, change that ensure a better use of their resources and a much wider acceptance from their customers. The wave of changes has reached the construction domain, and therefore the buildings have evolved into smart buildings, concept which offers a greater elasticity for both energy providers and end-users. Current paper deals with the Romanian framework for smart buildings, presenting comprehensively the drivers of change, as well as a very useful set of real-data simulations and smart solutions deployment, which will help complete the image of nowadays technological trends and future technical expectations for smart buildings.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"191 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122931629","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
Small Microgrid stability and performance analysis in isolated island 孤岛小微电网稳定性及性能分析
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339911
Mazin T. Muhssin, L. Cipcigan, Z. A. Obaid
{"title":"Small Microgrid stability and performance analysis in isolated island","authors":"Mazin T. Muhssin, L. Cipcigan, Z. A. Obaid","doi":"10.1109/UPEC.2015.7339911","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339911","url":null,"abstract":"A generalized model of a Microgrid in an island mode is proposed for assessing the system power and frequency performances. This Microgrid (MG) includes a diesel backup generator along with a number of Distributed Energy Resources (DES): Wind Turbine Generator (WTG), Photovoltaic System (PV), Fly- Wheel Energy Storage system (FESS), and Battery Energy Storage System (BESS). Controlling the frequency deviation is posing a great challenge in stand-alone mode due to the mismatch between load demand and generation. Five different study cases were modelled in Matlab to investigate the performance and stability of the power system. Furthermore, two PD Fuzzy logic control plus Integral (PDFLC+I) act as supplementary controller were incorporated locally with diesel and storage elements in order to improve the robustness and safety of the system. Fuzzy rule and integral parameters were chosen to achieve fast response and small power and frequency deviation throughout step change in load profile. Classical PID controller was introduced for comparison purposes. The potential of using responsive charging electric vehicles (EVs) under three scenarios as a form of primary response was investigated. Simulation results showed that the decentralized controller eliminates the fluctuation effect of the wind turbine and stabilizes the system frequency. EVs can play important role in system primary frequency response.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"68 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131569890","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: 15
Cyber security and communications network on SCADA systems in the context of Smart Grids 智能电网背景下SCADA系统的网络安全和通信网络
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339762
Tiago Antônio Rizzetti, P. Wessel, Alexandre Silva Rodrigues, Bolivar Menezes da Silva, R. Milbradt, Luciane Neves Canha
{"title":"Cyber security and communications network on SCADA systems in the context of Smart Grids","authors":"Tiago Antônio Rizzetti, P. Wessel, Alexandre Silva Rodrigues, Bolivar Menezes da Silva, R. Milbradt, Luciane Neves Canha","doi":"10.1109/UPEC.2015.7339762","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339762","url":null,"abstract":"The implementation of Smart Grids demands two-way communication mechanisms between the several network devices and the SCADA systems. This communication converges to use of IP based networks, which brings gains due to the wide use of this type of network. However, also brings the security concerns inherent the communications networks. In function on the criticality of power systems, provide a reliable and secure communication system are fundamental premises for your seemly operation. Because the diversity of devices from different manufacturers utilized in the power system are necessary mechanisms more generic to provide security. Thus, able provide security even at legacy devices without replacing it. To achieve it, this work proposes an architecture using security middleware SECOM that aims to make secure communications between supervisory systems and the IEDs. Therefore, avoiding denial of service attacks (DoS). This is possible because it manages issues about authenticity, integrity and confidentiality from communication networks.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132617659","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
Recloser-fuse coordination protection for inverter-based distributed generation systems 基于逆变器的分布式发电系统重合闸-熔断器协调保护
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339778
L. F. de F Gutierres, L. Mariotto, G. Cardoso, F. Loose
{"title":"Recloser-fuse coordination protection for inverter-based distributed generation systems","authors":"L. F. de F Gutierres, L. Mariotto, G. Cardoso, F. Loose","doi":"10.1109/UPEC.2015.7339778","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339778","url":null,"abstract":"This paper presents a novel recloser-fuse coordination protection for inverter-based distributed generation systems based on the use of RMS current comparators. In real-time, these comparators are responsible for analyzing current magnitude in upstream and downstream network directions; identify faults; and assess the recloser-fuse coordination status based on critical margins identified by the protection methodology. Once a mis-coordination is detected, some distributed generation units are strategically disconnected from the distribution network by gate turn-off thyristors. As a result of this action, short-circuit current is reduced to a satisfactory level, restoring the coordination between recloser and fuses in the grid. The proposed methodology has been implemented in a 12.47-kV grid with interconnection of 10 MW and 15 MW wind farms. Simulations have been carried out in ATP/EMTP. Significantly, the approach contributes to the adequacy and modernization of distribution systems with considerable tendency of distributed generation insertion.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132104330","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
Approximate characterization of large Photovoltaic power plants at the Point of Interconnection 大型光伏电站互连点的近似表征
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339789
A. Bonfiglio, F. Delfino, M. Invernizzi, A. Labella, D. Mestriner, R. Procopio, P. Serra
{"title":"Approximate characterization of large Photovoltaic power plants at the Point of Interconnection","authors":"A. Bonfiglio, F. Delfino, M. Invernizzi, A. Labella, D. Mestriner, R. Procopio, P. Serra","doi":"10.1109/UPEC.2015.7339789","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339789","url":null,"abstract":"The aim of the present article is that of proposing a calculation procedure to assess electric quantities at the Point of Interconnection (POI) of large PhotoVoltaic (PV) power plants on the basis of rated data and main design elements of the plant itself. The quantities of inters are active and reactive power available at the POI in order to extrapolate the power plant capability starting from the capabilities of PWM inverters. The procedure also allows evaluating the POI voltage variations, an important element due to the increasing requirements for renewable generation units to participate in voltage regulation. The main interest in such a methodology lays in its simplicity of application, that allows avoiding the usage of dedicated software for load flow calculations, and flexibility, that makes it suitable for the support of the bidding and pre-design phase of large photovoltaic power plants.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"64 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114216129","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
Comparison between Double Conversion Online UPS and Flywheel UPS technologies in terms of efficiency and cost in a medium Data Centre 中型数据中心双转换在线UPS与飞轮UPS的效率和成本比较
2015 50th International Universities Power Engineering Conference (UPEC) Pub Date : 2015-12-03 DOI: 10.1109/UPEC.2015.7339903
M. Milad, M. Darwish
{"title":"Comparison between Double Conversion Online UPS and Flywheel UPS technologies in terms of efficiency and cost in a medium Data Centre","authors":"M. Milad, M. Darwish","doi":"10.1109/UPEC.2015.7339903","DOIUrl":"https://doi.org/10.1109/UPEC.2015.7339903","url":null,"abstract":"An uninterruptible power supply is the most important part of the Data Center, linking between the main power supply and end sensitive load, to provide imperative protection against power disruptions. The main UPS preferred choices for protecting critical loads in Data Center are (Double Conversion Online UPS and Flywheel UPS system). But for the Data Center managers and operators selecting the right UPS for deployment can be a difficult proposition. Therefore this paper aims to provide a clearer understanding of key factors and considerations involved in selecting the right UPS system in terms of efficiency and cost. In order to clear these concerns a comparison made between Double Conversion Online UPS and Flywheel UPS system in a model of a medium size Data Center designed to provide 1500kW of cooling capacity to the Data Halls and hence support 1500kW of IT load. The electrical infrastructure topology to be adopted is `N+1' parallel redundancy configuration for each type of the UPS systems technologies.","PeriodicalId":446482,"journal":{"name":"2015 50th International Universities Power Engineering Conference (UPEC)","volume":"148 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-12-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123440099","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: 8
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