2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG)最新文献

Simultaneous operation of near-to-sea and off-shore wind farms with ocean renewable energy storage 同时运行具有海洋可再生能源存储的近海和离岸风力发电场

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875916

Hossein Shahinzadeh, A. Gheiratmand, Jalal Moradi, S. Fathi

{"title":"Simultaneous operation of near-to-sea and off-shore wind farms with ocean renewable energy storage","authors":"Hossein Shahinzadeh, A. Gheiratmand, Jalal Moradi, S. Fathi","doi":"10.1109/ICREDG.2016.7875916","DOIUrl":"https://doi.org/10.1109/ICREDG.2016.7875916","url":null,"abstract":"Renewable energy has recently significant incremental upward trend. In spite of such considerable growth in utilization of these kinds of energies, it has some downsides too. Renewable energies, such as wind and solar energy, have normally uncertainty, which confront operation of power system with some difficulties and complexities. Moreover, power system operation scheduling must be performed more exact as possible to diminish costs of system and protect it from losing any type of stability. In addition, in restructured power systems, the units having uncertainty have high risk of participation in wholesale power market because if they cannot be able to provide undertaken demand, they must be penalized by market operator. This curtailment also increases spot market clearing price (MCP) and total operation cost of system, and decrease profit of uncertain units. Therefore, use of large scale electrical energy storage units such as pumped-storage (PS), compressed air energy storage (CAES) and ocean renewable energy storage units (ORES) is inevitable in order to compensate imbalances performed by uncertainty. These types of storages can be constructed in a certain topological place, which must have specific geographical characteristics. In near-to-sea places, construction of PS and CAES units are predominantly impossible. Nevertheless, there are usually high potential of on-shore and off-shore wind energy extraction. Hence, coordination of ORES units and wind farms has some advantages, which are investigated in a 10-unit test system considering all operation constraints.","PeriodicalId":207212,"journal":{"name":"2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG)","volume":"4 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126594403","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: 31

A new control method for voltage harmonics compensation in islanded microgrid 孤岛微电网电压谐波补偿控制新方法

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875897

R. Ghanizadeh, M. Ebadian, G. Gharehpetian

{"title":"A new control method for voltage harmonics compensation in islanded microgrid","authors":"R. Ghanizadeh, M. Ebadian, G. Gharehpetian","doi":"10.1109/ICREDG.2016.7875897","DOIUrl":"https://doi.org/10.1109/ICREDG.2016.7875897","url":null,"abstract":"If sensitive loads are connected to point of common connection (PCC), compensation should be carried out in order to reduce PCC voltage harmonics. In this case, compensation is performed by the interface converters of distributed generation (DG) units. In this paper, a novel method is proposed for voltage harmonics compensation in islanded microgrids. Also, to decrease the asymmetry among phase impedances of microgrid, a novel structure is proposed to generate virtual impedance. At fundamental frequency, the proposed structure for the virtual impedance improves the control of the fundamental component of the power, and at harmonic frequencies, it acts to adaptively improve nonlinear load sharing among DG units. In the structures of the proposed harmonic compensator and the proposed virtual impedance, a self-tuning filter (STF) is used for separating the fundamental component from the harmonic components. This STF decreases the number of the phase locked loop (PLL). The Simulation results in MATLAB/SIMULINK environment show the efficiency of the proposed approach in improving load sharing and decreasing voltage harmonics.","PeriodicalId":207212,"journal":{"name":"2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG)","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116672500","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

Evaluating the effects of maximum power point tracking techniques on the reliability of grid-connected photovoltaic systems 评估最大功率点跟踪技术对并网光伏系统可靠性的影响

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875913

H. Afrakhte, P. Bayat, P. Bayat

{"title":"Evaluating the effects of maximum power point tracking techniques on the reliability of grid-connected photovoltaic systems","authors":"H. Afrakhte, P. Bayat, P. Bayat","doi":"10.1109/ICREDG.2016.7875913","DOIUrl":"https://doi.org/10.1109/ICREDG.2016.7875913","url":null,"abstract":"Despite all the advantages presented by the generation of energy through photovoltaic (PV) cells, the efficiency of energy conversion is currently low, and the initial cost for its implementation is still considered high; thus, it becomes necessary to use techniques to extract the maximum power from these panels, in order to achieve maximum efficiency in operation. In this paper, in order to evaluate the effects of maximum power point tracking (MPPT) techniques on the reliability of grid-connected PV systems, different MPPT techniques employed in PV systems are discussed according to a classification scheme as offline methods, online methods, and hybrid methods. The recursive least squares (RLS) identification algorithm uses to identify local PV system model parameters under different MPPT method. For proper separation of each MPPT method, variation of irradiation is considered as variation of set point. The simulation result shows that, there is direct relations between MPPT methods and overall reliability of the PV system. For this purpose, simulations were made in MATLAB/SIMULINK environment.","PeriodicalId":207212,"journal":{"name":"2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG)","volume":"216 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115978965","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

An efficient power supply for Wireless Sensor Networks through environmental energy harvesting 通过环境能量收集为无线传感器网络提供高效电源

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875895

M. Ayaz, E. Farjah, T. Ghanbari

引用次数: 1

Modeling the cooperation between neighboring VPPs: Cross-regional bilateral transactions 相邻vp之间的合作建模:跨区域双边交易

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875909

Morteza Shabanzadeh, M. Sheikh‐El‐Eslami, M. Haghifam

{"title":"Modeling the cooperation between neighboring VPPs: Cross-regional bilateral transactions","authors":"Morteza Shabanzadeh, M. Sheikh‐El‐Eslami, M. Haghifam","doi":"10.1109/ICREDG.2016.7875909","DOIUrl":"https://doi.org/10.1109/ICREDG.2016.7875909","url":null,"abstract":"This paper provides a well thought view of the virtual power plant (VPP) concept from the cross-regional cooperation of neighboring VPPs to its potential trading benefits. For a smart power system, it is recognized that multiple VPPs can exist in a system, hence from an individual VPP' viewpoint, the cooperation with all physically-connected neighboring VPPs would be a golden opportunity for managing the risk of profit variability as well as achieving high profits. To this end, a decision making framework for medium-term self-scheduling of an individual VPP with the aim of exercising arbitrage between two different trading floors, bilateral contracts and the pool, is proposed. Moreover, an efficient risk management approach based on the concept of second-order stochastic dominance constraints (SOSDCs) is used to enable informed decision making under different levels of uncertainty. This method is clearly discussed in an easy to follow way. Finally, the efficiency of the proposed model is analyzed through a detailed case study, and thereby relevant conclusions are drawn.","PeriodicalId":207212,"journal":{"name":"2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG)","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127693907","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

Low voltage ride-through of a two-stage photovoltaic inverter under different types of grid faults 两级光伏逆变器在不同类型电网故障下的低压通断

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875899

M. Eydi, Javad Farhang, Reza Emamalipour, B. Asaei

引用次数: 4

Design optimization of a permanent magnet brushless generator for a gearless wind turbine 无齿轮风力发电机永磁无刷发电机的优化设计

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875896

A. Jabbari

引用次数: 1

Energy management system for smart house with multi-sources using PI-CA controller 采用PI-CA控制器的多源智能家居能源管理系统

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875914

H. Afrakhte, P. Bayat, P. Bayat

引用次数: 4

A hybrid DC circuit breaker for DC microgrid based on zero current switching 一种基于零电流开关的直流微电网混合式直流断路器

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875917

Davood Keshavarzi, E. Farjah, Teymoor Ghanbarih

引用次数: 3

A new strategy in selective harmonic elimination for a photovoltaic multilevel inverter 光伏多电平逆变器的选择性谐波消除新策略

2016 Iranian Conference on Renewable Energy & Distributed Generation (ICREDG) Pub Date : 2016-04-02 DOI: 10.1109/ICREDG.2016.7875918

Soroush Mohammadalizadeh, M. Ghayeni

引用次数: 2