搜索到11103篇“ MICROGRID“的相关文章
基于自适应变异粒子群算法的风光储微网调度
2025年
为克服传统粒子群算法在求解时容易形成局部最优,求解精度低的不足,提出了一种基于自适应变异粒子群优化的微电网调度求解方法。惯性权重采用自适应正态分布递减,随着迭代次数的增加更新粒子位置的移动策略,并且在算法后期引入变异环节。为验证算法的有效性,文章与其他算法进行收敛性能对比,并对两种典型天气情况下的微网运行成本模型仿真求解,得到最优调度。算例结果表明,改进算法能够对粒子全局最优搜索优化,效果优于其他算法,可合理调配分布式电源出力时段,具有良好的可行性。
聂文龙李再冉吴彩霞王远
关键词:微电网调度粒子群算法自适应
新能源独立微电网技术的研究
2024年
文章对比了国内外新能源独立微电网的技术特点、应用领域及未来规划发展趋势,分析了微电网典型项目的配置与运行状况,同时总结了新能源独立微电网的技术优势及适配环境。研究结果表明,微电网对提高电网的可靠性和复原力具有重要意义,可通过所管理的分布式清洁能源(如太阳能和风能)实现节能减排,并能够提高中央电力基础设施的供电能力,在未来电网结构中将起到重要的调节作用。
褚锦涛梁卫凯
关键词:新能源微电网智能微电网电网清洁能源储能
Optimal Design of Hybrid Microgrid in Isolated Communities of Ecuador
2024年
In rural territories, the communities use energy sources based on fossil fuels to supply themselves with electricity, which may address two main problems: greenhouse gas emissions and high fuel prices. Hence, there is an opportunity to include renewable resources in the energy mix. This paper develops an optimization model to determine the optimal sizing, the total annual investment cost in renewable generation, and other operating costs of the components of a hybrid microgrid. By running a k-means clustering algorithm on a meteorological dataset of the community under study, the hourly representative values become input parameters in the proposed optimization model. The method for the optimal design of hybrid microgrid is analyzed in six operating scenarios considering:(1) 24-hour continuous power supply;(2) load shedding percentage;(3) diesel power generator(genset) curtailment;(4) the worst meteorological conditions;(5) the use of renewable energy sources including battery energy storage systems(BESSs);and(6) the use of genset. A mathematical programming language(AMPL) tool is used to find solutions of the proposed optimization model. Results show that the total costs of microgrid in the scenarios that cover 100% of the load demand(without considering the scenario with 100% renewables) increase by over 16% compared with the scenario with genset operation limitation. For the designs with power supply restrictions, the total cost of microgrid in the scenario with load shedding is reduced by over 27% compared with that without load shedding.
Luis A.PesantesRuben Hidalgo-LeónJohnny RengifoMiguel TorresJorge AragundiJoséCordova-GarciaLuis F.Ugarte
关键词:MICROGRID
Optimal scheduling of islanded microgrid based on improved MOSSA
Microgrid systems are widely used in various scenarios. However, there is great uncertainty in the output of w...
Lai HuanhuanPei QingqiLiu MeiqinDong ShanlingXie ZhiyunZheng JianQu HezuoZhang Senlin
关键词:MICROGRID
Enhancing microgrid renewable energy integration at SEKEM farm
2024年
This study explores the feasibility of implementing a hybrid microgrid system powered by renewable energy sources.Including solar photovoltaics,wind energy,and fuel cells to ensure a reliable and sustainable electricity supply for the SEKEM farm in WAHAT,Egypt.The study utilizes MATLAB/Simulink software to conduct simulations based on sun irradiation and wind speed data.Various control techniques,such as the proportional-integral(PI)controller,Fuzzy Logic Controller for PI tuning(fuzzy-PI),and neuro-fuzzy controllers,were evaluated to improve the performance of the microgrid.The results demonstrate that the Fuzzy-PI control strategy outperforms the alternative control systems,enhancing the overall dependability and long-term viability of energy provision.The hybrid system was integrated with a voltage source control(VSC)and fuzzy PI controller,which effectively addressed power fluctuations and improved the stability and reliability of the energy supply.Furthermore,it provides insightful information on how to design and implement a 100%renewable energy system,with the fuzzy PI controller emerging as a viable method of control that can guarantee the system’s resilience and outperform other approaches,such as the standalone PI controller and the neuro-fuzzy controller.
Mohamed.M.RedaMohamed I.ElsayedM.A.Moustafa HassanHatem M.Seoudy
关键词:NEURO-FUZZYFUZZY-PI
A Blockchain-Based Game Approach to Multi-Microgrid Energy Dispatch
2024年
As the current global environment is deteriorating,distributed renewable energy is gradually becoming an important member of the energy internet.Blockchain,as a decentralized distributed ledger with decentralization,traceability and tamper-proof features,is an importantway to achieve efficient consumption andmulti-party supply of new energy.In this article,we establish a blockchain-based mathematical model of multiple microgrids and microgrid aggregators’revenue,consider the degree of microgrid users’preference for electricity thus increasing users’reliance on the blockchainmarket,and apply the one-master-multiple-slave Stackelberg game theory to solve the energy dispatching strategy when each market entity pursues the maximum revenue.The simulation results show that the blockchain-based dynamic game of the multi-microgrid market can effectively increase the revenue of both microgrids and aggregators and improve the utilization of renewable energy.
Zhikang WangChengxuan WangWendi WuCheng SunZhengtian Wu
基于分层事件触发的混合微电网集中控制策略被引量:1
2024年
针对混合微电网集中控制对中央控制器依赖严重、通信需求量大、扰动调节能力差的问题,提出一种微电网中央控制器(microgrid central control,MGCC)参与的分层事件触发控制策略,有效降低分布式集群的冗余通信并减少中央控制器计算负担,改进策略可靠性。该策略将控制系统分为2层,其中,设备层为本地控制层,采用分布式协同控制,所设计的本地控制器可就地控制更新输出状态,实现混合微电网的分散自治运行;另外,在控制层建立微电网控制层,引入事件触发策略,协调MGCC获取混合微电网的全局信息,从而向本地控制器发出预定义的调控指令,实现“源网荷储”灵活调度,尤其是应对突发事件而引发的电网振荡。最后,采用Matlab搭建混合微电网模型并进行仿真,利用Stateflow模块实现了事件触发算法,验证控制策略在满足并网/孤岛模式可靠性、稳定性的前提下,系统通信量可降低56.4%。
李一鸣何奇王海亮钟浩马辉黄悦华
关键词:分层结构
城市应急微网群管控关键技术综述被引量:1
2024年
当城市供电系统发生较大范围的停电事故时,电动汽车、分布式电源等可构建应急微网群保证关键负荷的持续供电。高比例新能源和高度电力电子化使得应急微网群运行中面临暂态电压和频率安全稳定挑战。在微网群能量管理过程中,需要考虑暂态安全稳定约束。而微网群的暂态安全稳定域具有强非线性,且离散和连续设备的差异化调节特性以及能量管理终端的计算能力和通信方式差异化使得考虑安全稳定的调控困难。依据“动态建模-稳定分析-协同调控”的内在逻辑,围绕考虑暂态安全稳定约束的城市应急微网群协同调控开展以下综述:1)考虑变流器宽频域和非光滑控制特性的微电网动态建模方法;2)研究微网群电压和频率暂态安全稳定机理与判据;3)考虑暂态安全稳定约束、信息交互延时和离散-连续混杂特征的微网群分布式优化调控方法。基于以上三个方面,阐述城市应急微网群安全稳定与低碳经济运行当前研究的不足和发展方向。
巨云涛李子怡
直流微电网DC/DC变流器IGBT均温控制
2024年
直流微电网并联DC/DC变流器中功率器件IGBT电热参数以及线路参数存在差异性,使得各并联DC/DC变流器中的IGBT承受不同的热应力,热应力差异加剧了DC/DC变流器IGBT疲劳老化失效程度,降低了直流微电网整体供电可靠性。为此,提出一种直流微电网DC/DC变流器IGBT均温控制策略。首先,建立基于Foster热网络模型的IGBT热电耦合模型,并计算分析DC/DC变流器IGBT结温;然后,分析直流微电网并联DC/DC变流器IGBT结温差异的影响因素,通过在传统下垂控制中引入均温虚拟阻抗,自适应调整流经各DC/DC变流器的电流,使得各并联DC/DC变流器IGBT结温趋于一致,并进行所提策略的稳定性分析,实现DC/DC变流器运行可靠性和直流微电网整体稳定性的有效提升;最后,搭建Matlab/Simulink与PLECS/Blockset联合仿真模型,验证了所提均温控制策略的有效性。
张波郭效瑞刘亚峰孙英钧黄锐高远
关键词:直流微电网DC/DC变流器可靠性
Review of Networked Microgrid Protection:Architectures,Challenges,Solutions,and Future Trends
2024年
Design and selection of advanced protection schemes have become essential for reliable and secure operation of networked microgrids.Various protection schemes that allow correct operation of microgrids have been proposed for individual systems in different topologies and connections.Nevertheless,protection schemes for networked microgrids are still in devel-opment,and further research is required to design and operate advanced protection in interconnected systems.Interconnection of these microgrids in different nodes with various intercon-nection technologies increases fault occurrence and complicates protection operation.This paper aims to point out challenges in developing protection for networked microgrids,potential solutions,and research areas that need to be addressed for their development.First,this article presents a systematic analysis of different microgrid clusters proposed since 2016,including several architectures of networked microgrids,operation modes,components,and utilization of renewable sources,which have not been widely explored in previous review papers.Second,the paper presents a discussion on protection systems currently available for microgrid clusters,current challenges,and solutions that have been proposed for these systems.Finally,it discusses the trend of protection schemes in networked microgrids and presents some conclusions related to implementation.IndexTerms—Adaptive eprotection,microgrid cluster,microgrid,multiple microgrid,networked microgrid,real-time simulation,smart grid.
Jorge de la CruzYing WuJohn E.Candelo-BecerraJuan C.VasquezJosep M.Guerrero
关键词:MICROGRID

相关作者

黄小耘
作品数:40被引量:237H指数:5
供职机构:广东电网公司
研究主题:配电网 微电网 变电站 功率极限 电网系统
裴玮
作品数:304被引量:2,599H指数:27
供职机构:中国科学院电工研究所
研究主题:分布式能源 交直流 配电网 微电网 微网
金新民
作品数:199被引量:1,910H指数:25
供职机构:北京交通大学
研究主题:变流器 并网逆变器 光伏并网逆变器 PWM整流器 微网
郑永伟
作品数:7被引量:157H指数:4
供职机构:内江电业局
研究主题:微网 控制策略 微电网 自适应调节 恒功率控制
张书杰
作品数:56被引量:220H指数:9
供职机构:北京工业大学
研究主题:网络流 教育考试 数据仓库 移动代理 网格