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2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)最新文献

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A novel parallel control for modular energy storage system achieving high performance, redundancy and applicability 一种新型的模块化储能系统并联控制方法,具有高性能、冗余性和适用性
Jung-Hoon Ahn, Byoung-Kuk Lee
This paper proposes a novel parallel control for modular ESSs through the comparative analysis of various conventional parallel control types The VSI modules for ESSs operating in parallel must satisfy the following fundamental requirements: 1) high load sharing performance, 2) tight output regulation, 3) high redundancy, 4) high applicability to both modes for ESSs However, conventional approaches failed to achieve the both goal of high redundancy and high load sharing performance at once. On the contrary, the proposed parallelism control directly controls their output current of each VSI, leading to achieving an excellent load sharing performance without knowledge of their rated-powers and how many VSIs are connected. The verification of the proposed control algorithm is verified by simulation results, 30 kW ESS prototype, and its experimental results.
本文通过对各种传统并联控制方式的比较分析,提出了一种新的模块化ess并联控制方式。用于ess并联运行的VSI模块必须满足以下基本要求:1)高负载共享性能,2)严格的输出调节,3)高冗余,4)两种模式对ess的高适用性,而传统的方法无法同时实现高冗余和高负载共享性能。相反,所提出的并行控制直接控制每个VSI的输出电流,从而在不知道它们的额定功率和连接多少VSI的情况下实现出色的负载共享性能。通过仿真结果、30kw ESS样机及其实验结果验证了所提控制算法的正确性。
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引用次数: 8
Relationship between power generated and series/parallel solar panel configurations for 3D Fibonacci PV modules 三维斐波那契光伏组件的串联/并联太阳能板配置与发电量的关系
Yuki Mochizuki, T. Yachi
Three-dimensional (3D) Fibonacci number photovoltaic modules (FPMs), which are designed in part based on natural plant leaf arrangements, have been proposed as a means of efficiently collecting solar energy over the course of a day. In an FPM, it is necessary to connect the solar cells of each PV panel in series in order to obtain high output voltage. However, series connections of this type can also decrease the amount of electric power generated by the FPM if the shadows produced by panels fall on those receiving sunlight. In this paper, we report our computer simulation-based investigation into the relationship between the cell series connection numbers and the output electric power of an FPM, the results of which show that amounts of power generated by the FPM decrease with an increase in the number of series cell connections. This rate of decrease is considered to weaken the efficiency of each direct current to direct current (DC-DC) converter.
三维(3D)斐波那契数光伏模块(FPMs)部分是基于自然植物叶片排列设计的,已被提出作为在一天中有效收集太阳能的一种手段。在FPM中,为了获得高输出电压,必须将每个光伏板的太阳能电池串联起来。然而,如果面板产生的阴影落在接收阳光的面板上,这种类型的串联连接也会减少FPM产生的电量。在本文中,我们报告了基于计算机模拟的研究,研究了单元串联连接数与FPM输出功率之间的关系,结果表明,FPM产生的功率随着单元串联连接数的增加而减少。这种下降速率被认为削弱了每个直流到直流(DC-DC)转换器的效率。
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引用次数: 10
A methodology for evaluation of operational zones for distributed generation based on DFIG 一种基于DFIG的分布式发电运行区域评估方法
Luis Alejandro Baldomir Gutierrez, M. Salles, A. Sguarezi, A. Grilo, J. Cardoso, R. Miceli
This study developed a methodology to determine zones of acceptable voltage profiles for wind power generation connected to distribution systems. Three load profiles (residential, commercial and industrial) connected to the distribution network were analyzed considering the impact on voltage levels and steady-state stability for different wind speeds and wind generator control strategies. The wind generator model is based on doubly fed induction generator (DFIG) and were developed using Matlab/Simulink. The presented methodology can be used to map the impact on operation of different types of control, the time of day and the available wind speed and it is not limited only for DFIG. The results have shown that the methodology helps to find zones were the combination of wind speed, load demand and control strategy can lead the system to voltage levels outside the standard limits. The determination of these zones of inoperability helps the utilities to avoid and prevent the system from fail.
本研究开发了一种方法来确定连接到配电系统的风力发电的可接受电压分布区域。考虑了不同风速和风力发电机控制策略对配电网电压水平和稳态稳定性的影响,分析了接入配电网的三个负荷剖面(住宅、商业和工业)。风力发电机模型基于双馈感应发电机(DFIG),采用Matlab/Simulink开发。所提出的方法可用于绘制不同类型的控制、一天中的时间和可用风速对运行的影响,并且不仅限于DFIG。结果表明,该方法有助于找到风速、负载需求和控制策略的组合可能导致系统电压水平超出标准限制的区域。确定这些不可操作区域有助于公用事业公司避免和防止系统发生故障。
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引用次数: 3
Feasibility of solar PV integration in to the grid connected telecom base stations and the ultimate challenge 太阳能光伏整合到并网电信基站的可行性及终极挑战
K. C. Wijesinghe
Integrate Solar PV in scalable on to the grid connected and standalone power generation system has increased attention in these days due to its sustainability and more greener generation. This has become a good option to reduce the telecom Radio Base Stations utility power consumption. The techno economic feasibility of Solar PV integration methodologies in to On-Grid telecom based stations, basically in to the DC bus by rectifier systems comprising of inbuilt DC to DC converting Solar PV charger controllers or in to the A/C bus through grid tie inverter system facilitate with “Net metering” are discussed in this paper. It was found that it is successful to integrate Solar PV in to on grid sites with different tariff structures. Finally, this paper discusses ultimate challenge which is techno economically doable by making A/C to DC converting Rectifier Modules in Hybrid Controllers in to Bi Directional Converters with grid tie facility.
由于其可持续性和更环保的发电方式,将可扩展的太阳能光伏集成到并网和独立发电系统中越来越受到关注。这已成为降低电信无线基站电力消耗的一个很好的选择。本文讨论了太阳能光伏集成到并网电信基站的技术经济可行性,主要是通过由内置直流到直流转换太阳能光伏充电器控制器组成的整流系统到直流母线,或通过并网逆变器系统方便地“净计量”到空调母线。研究发现,在不同的电价结构下,太阳能光伏并网是成功的。最后,讨论了将混合控制器中的ac / DC转换整流模块改为带并网设备的双向变换器在技术经济上可行的终极挑战。
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引用次数: 8
PSO-PR power flow control of a single-stage grid-connected PV inverter 单级并网光伏逆变器的PSO-PR潮流控制
Dannier Adolfo, Del Pizzo Andrea, Di Noia Luigi Pio, Meo Santolo
In this article, a current control algorithm is conceived for converting solar dc power into ac power of high-quality. This conversion is based only on a dc-ac converter, avoiding the use of two stage converter. The proposed algorithm is founded on tracking the maximum power point which ensures controlling the electrical power exchanged with the grid. To assure a good dynamics and reduce the control errors, a proportional resonant controllers are utilized and a self-tuning founded on particle swarm optimization is utilized. The proposal strategy goodness is verified by means of numerical simulations.
本文提出了一种将太阳能直流电转换为高质量交流电的电流控制算法。这种转换仅基于直流-交流转换器,避免使用两级转换器。该算法以跟踪最大功率点为基础,保证了与电网交换电力的控制。为了保证系统具有良好的动力学特性和减小控制误差,采用了比例谐振控制器和基于粒子群优化的自整定方法。通过数值仿真验证了所提策略的有效性。
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引用次数: 9
Real time active power control in smart grid 智能电网实时有功功率控制
A. Shobole, Mohammed Wadi, M. Tür, M. Baysal
A power balance between supply and demand is essential for reliable and stable operation of power grids. The mismatch between supply and demand causes the frequency deviations which results in malfunction of most of the electrical devices. Moreover, it affects the system stability resulting in system blackouts as that of USA, in 2003. For decades the balancing of supply and demand was based on generation side control of power systems through ahead of time generation dispatch scheduling. The smart grid is being used today to describe technologies and methods that automatically and rapidly isolate faults, restore power, monitor demand, and maintain and restore stability for more reliable electric power. Thus, in this study, a method of controlling active power (balancing demand and supply) in real time is proposed This method is feasible in smart grid as communication and advanced information technologies are used for real time data exchange about the generation, demand, storage, market, environmental conditions, and other necessary data. These data are important in making decisions about real-time supply and demand balancing in the smart grid. Additionally, in smart grid, taking the advantage of demand response and storage systems, it is possible to balance demand and supply in real-time The simulation is done by the DigSilent Power Factory simulation tool for verification of the proposed method. In addition to an electric network modeling part of the simulation tool, the DigSilent Programming Language (DPL) feature is used for coding the decision making program.
电力供需平衡对电网的可靠稳定运行至关重要。供给和需求之间的不匹配导致频率偏差,从而导致大多数电气设备故障。此外,它影响了系统的稳定性,导致了2003年美国的系统停电。几十年来,电力系统的供需平衡都是建立在发电侧控制的基础上,通过提前调度来实现的。如今,智能电网被用来描述自动快速隔离故障、恢复电力、监测需求、维护和恢复稳定以获得更可靠电力的技术和方法。因此,本研究提出了一种实时控制有功功率(供需平衡)的方法,该方法在智能电网中是可行的,因为它采用通信和先进的信息技术,可以实时交换发电、需求、存储、市场、环境等必要数据。这些数据对于智能电网的实时供需平衡决策非常重要。此外,在智能电网中,利用需求响应和存储系统的优势,可以实时平衡需求和供应。通过DigSilent Power Factory仿真工具进行了仿真,以验证所提出的方法。除了仿真工具的电气网络建模部分外,还使用DigSilent编程语言(DPL)功能对决策程序进行编码。
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引用次数: 17
Very-short term modeling of global solar radiation and air temperature data using curve fitting methods 利用曲线拟合方法对全球太阳辐射和气温数据进行极短期模拟
M. Yesilbudak, Medine Colak, R. Bayindir, H. Bulbul
The development of renewable energy technologies is an inevitable requirement to cope with environmental, economic and political challenges. Solar energy is regarded as one of the most promising types among renewable energy sources. So, the characterization of solar parameters is a significant process in solar energy installations. In this paper, we use three different curve fitting methods called Fourier, sum of sines and smoothing spline in order to model global solar radiation and air temperature parameters at 10-min intervals over a month. In the stage of accuracy comparison, we computed the coefficient of determination (R2) and the root mean squared error (RMSE) for the mentioned methods. In consequence, the smoothing spline model leads to the best modeling results.
发展可再生能源技术是应对环境、经济和政治挑战的必然要求。太阳能被认为是可再生能源中最有前途的一种。因此,太阳能参数的表征是太阳能装置的一个重要过程。在本文中,我们使用三种不同的曲线拟合方法,即傅里叶,正弦和平滑样条,以模拟全球太阳辐射和空气温度参数在一个月内10分钟的间隔。在精度比较阶段,我们计算了上述方法的决定系数(R2)和均方根误差(RMSE)。因此,光滑样条模型的建模效果最好。
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引用次数: 12
Modeling and simulation of thermo electrical generator with MPPT 基于MPPT的热电发电机建模与仿真
Abdelhakim Belkaid, I. Colak, K. Kayisli
Nowadays, thermo electrical (TE) modules are increasingly popular because their prices go down and new potential applications have emerged. This paper presents modeling, simulation, and control of the power generation of a thermoelectric generator (TEG) using Matlab/Simulink. To get the aim of maximizing the power from the TEG, an MPPT controller based on sliding mode control (SMC) was implemented on a boost DC/DC converter, to ensure that the TEG operates at its peak power whatever the conditions of entry. To examine the modeling and the truthful function of the MPPT method, an HZ-20 module feeding a resistor through a chopper was used. The proposed tracker offers best performances in static and dynamic regimes comparing to Perturb and Observe (P&O) technical algorithm. The results indicate that the average efficiency of the proposed method is found equal to 98.58% greater than the efficiency attained by P&O which is equal to 96.02%.
如今,热电(TE)模块越来越受欢迎,因为它们的价格下降,新的潜在应用已经出现。本文介绍了利用Matlab/Simulink对热电发电机(TEG)发电进行建模、仿真和控制。为了使TEG的功率最大化,在升压DC/DC变换器上实现了基于滑模控制(SMC)的MPPT控制器,以确保TEG在任何进入条件下都能在其峰值功率下工作。为了验证MPPT方法的建模和真实功能,使用了一个HZ-20模块通过斩波馈送电阻。与Perturb and Observe (P&O)技术算法相比,所提出的跟踪器在静态和动态状态下都具有最佳性能。结果表明,该方法的平均效率比P&O方法的平均效率高98.58%,P&O方法的平均效率为96.02%。
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引用次数: 4
On advanced control strategies for DFIG-based wind energy conversion systems during voltage unbalance 电压不平衡时基于dfig的风能转换系统的高级控制策略研究
J. Chhor, P. Tourou, C. Sourkounis
The penetration level of decentralized power generation plants based on renewable energy sources are continuously increasing with wind energy having a significant share. Considering present developments towards a purely renewable energy based electricity supply, Wind Energy Conversion Systems (WECS) play an important role in securing a stable, reliable and continuous supply of energy. Particularly in weak distribution grids with frequent power quality implications, WECS need to reliably operate and stable the grid. This paper presents advanced control strategies for DFIG-type WECS during unbalanced voltage conditions Applying resonant controllers, negative sequence components are well-controlled, contributing to an improved operation behavior particularly during less severe but persistent unbalanced grid voltages.
以可再生能源为基础的分散式发电厂的渗透水平不断提高,其中风能占有相当大的份额。考虑到目前以纯可再生能源为基础的电力供应的发展,风能转换系统(WECS)在确保稳定、可靠和持续的能源供应方面发挥着重要作用。特别是在电力质量经常受到影响的薄弱配电网中,WECS需要可靠地运行和稳定电网。本文介绍了dfig型wcs在不平衡电压条件下的先进控制策略。采用谐振控制器,负序分量得到很好的控制,有助于改善运行行为,特别是在不太严重但持续不平衡的电网电压下。
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引用次数: 9
A novel energy management algorithm for islanded AC microgrid with limited power sources 一种新的有限电源孤岛交流微电网能量管理算法
S. Bayhan, Yupeng Liu, S. Demirbas
This paper proposes a novel energy and power management algorithm for AC microgrid operating with limited power sources, to ensure power quality and stability of the main grid. In a microgrid system, the renewable energy sources (RES) are commonly associated with conventional power sources and energy storage devices, due to the variety of the former. However, how to utilize the RES and energy storage system to constantly and steadily supply the loads, further more how to supply extra power to or draw necessary power from the main grid, is an essential issue when there is limited power sources of The microgrid if without a conventional power source. This paper solves that issue through an energy management algorithm. Simulation is conducted and results verify the proposed method.
为了保证主电网的电能质量和稳定性,提出了一种新的有限电源条件下交流微电网的能量和功率管理算法。在微电网系统中,由于可再生能源的多样性,可再生能源通常与传统电源和储能装置联系在一起。然而,如何利用可再生能源和储能系统持续稳定地为负荷供电,进而向主电网提供额外的电力或从主电网获取必要的电力,是微电网在没有常规电源的情况下电源有限的情况下必须解决的问题。本文通过一种能量管理算法解决了这个问题。仿真结果验证了该方法的有效性。
{"title":"A novel energy management algorithm for islanded AC microgrid with limited power sources","authors":"S. Bayhan, Yupeng Liu, S. Demirbas","doi":"10.1109/DISTRA.2017.8191138","DOIUrl":"https://doi.org/10.1109/DISTRA.2017.8191138","url":null,"abstract":"This paper proposes a novel energy and power management algorithm for AC microgrid operating with limited power sources, to ensure power quality and stability of the main grid. In a microgrid system, the renewable energy sources (RES) are commonly associated with conventional power sources and energy storage devices, due to the variety of the former. However, how to utilize the RES and energy storage system to constantly and steadily supply the loads, further more how to supply extra power to or draw necessary power from the main grid, is an essential issue when there is limited power sources of The microgrid if without a conventional power source. This paper solves that issue through an energy management algorithm. Simulation is conducted and results verify the proposed method.","PeriodicalId":6535,"journal":{"name":"2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)","volume":"2 1","pages":"64-69"},"PeriodicalIF":0.0,"publicationDate":"2017-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82356400","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
期刊
2017 IEEE 6th International Conference on Renewable Energy Research and Applications (ICRERA)
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