Description: 基于P2P结构的无线网格资源发现机制.pdf
针对无线网络的特殊环境,提出了一种基于P2P 结构的无线网格资源发现机制,该机制结合了分布式
与集中式网格资源发现的优点,引入了超级节点的概念,通过超级节点管理域内用户,将资源信息存放在超级
节点中,避免了中央节点聚合目录的更新. 并在此机制基础上给出了一个无线网格信息服务架构,满足了无线
网格资源发现的分散性和可扩展性的特点. 理论分析和实验证明能够提高无线网格资源发现效率.-Based on the structure of a wireless P2P Grid Resource Discovery Mechanism. Pdf for the unique environment of the wireless network, a P2P-based wireless mesh structure resource discovery mechanism, which combines the distributed and centralized grid resource discovered the advantages of introduced the concept of super-node, through the super-node management region users, resource information will be stored in the super-node, to avoid polymerization of the central node of the updated directory. and in this mechanism is given based on a wireless mesh architecture information services to meet the a wireless mesh decentralized resource discovery and scalability characteristics. theoretical analysis and experimental results prove that wireless mesh to improve the efficiency of resource discovery. Platform: |
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Author:yinlu |
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Description: 在某一网络拓扑结构中,检验是否使每一个节点都保持连通状态,在电网规划中有重要作用-In a network topology, the test is to enable each node to maintain connectivity of a state, in the grid plays an important role in planning Platform: |
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Author:万振东 |
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Description: We propose an algorithm for facial expression recognition which can classify the given image into one of the seven basic facial expression categories (happiness, sadness, fear, surprise, anger, disgust and neutral). PCA is used for dimensionality reduction in input data while retaining those characteristics of the data set that contribute most to its variance, by keeping lower-order principal components and ignoring higher-order ones. Such low-order components contain the "most important" aspects of the data. The extracted feature vectors in the reduced space are used to train the supervised Neural Network classifier. This approach results extremely powerful because it does not require the detection of any reference point or node grid. The proposed method is fast and can be used for real-time applications. Platform: |
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Author:mhm |
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Description: 标准的IEEE11节点配电网系统电力网络图，两个格式的-Standard IEEE11 node with the grid system electricity network diagram, the two formats Platform: |
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Author:立新功 |
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Description: 定位技术是无线传感器网络中关键的基础支撑技术, 目前提出了许多静态网络的节点定位算
法, 移动无线传感器网络的定位研究相对较少. 针对定位节点和参考节点随机运动的网络模型, 提出了
一个基于动态网格划分的蒙特卡罗定位算法. 算法中当接收的参考节点数超过一定阈值时使用最远距
离节点选择模型, 选出部分参考节点参与定位和信息转发, 节约能耗. 接着基于选择的或所有接收的参
考节点构建采样区域, 进行网格划分, 使用网格单元数计算最大采样次数, 在采样区域内采样并使用误
差补偿的运动模型进行过滤, 提高了采样效率, 减少了计算开销, 并保证了较好的定位精度. 仿真实验表
明算法在定位精度, 计算开销、能耗等方面都具有较好的性能.-Positioning technology is critical in wireless sensor networks based supporting technologies, currently made many static network node localization algorithms, the positioning of mobile wireless sensor network research is relatively small. Locate node and a reference node for random motion network model, proposed a Dynamic meshing based Monte Carlo localization algorithm. algorithm when the received reference nodes exceeds a certain threshold, the most distant node selection model selects some reference nodes involved locating and forwarding information, save energy. then based on the selection or building all received reference node sampling area, meshing, the number of grid cells used to calculate the maximum sampling frequency, the sampling area sampling and using motion model error compensation filter to improve sampling efficiency, reducing the computational overhead and to ensure a better positioning accuracy. Simulation experiments show that the algorithm in positioning accuracy, Platform: |
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Author:Jeff |
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Description: 在MATLAB/Simulink环境中搭建了光伏发电系统模型,其采用最大功率点跟踪(MPPT)控制算法,并加入继电保护逻辑控制模块.通过PSASP的用户程序接口,可将该模型以电流源的形式接入电网模型进行暂态稳定计算.同时提出在电流源并网模式下并网光伏发电系统控制其与电网的无功功率交换为0,因此在潮流计算中可将光伏电站设为PQ节点,并设无功功率为0.CEPRI 36节点系统的仿真结果验证了该模型的正确性,并表明所提模型比常规同步电机二阶经典模型对电网故障的反应更为灵敏,但其对于改善全系统的暂态稳定性作用不大.-Built in MATLAB/Simulink environment, the photovoltaic power generation system model, which uses maximum power point tracking (MPPT) control algorithm and adding relay logic control module via the user program interface PSASP of the model can be in the form of a current source connected to the grid computing model for transient stability, while raised in the current source and network mode and grid-connected PV systems control the reactive power exchange with the grid is zero, so the flow calculation of photovoltaic power plants can be set to PQ node, reactive power and set the simulation results 0.CEPRI 36 node system to verify the correctness of the model and show that the proposed model is more sensitive than conventional synchronous motor response of the second-order classical model of grid failure, but the whole to improve transient stability is not the role of the system. Platform: |
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Author:李雷 |
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Description: 牛拉法编程，是其在大电网多节点的网络中应用更方便-Cattle Rafah programming, is its application in multi-node network in a large grid is more convenient Platform: |
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Author:刘海珍 |
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Description: 用于实现IEEE33节点配电网系统中接入5个微电网的最优注入功率优化，使用粒子群算法实现。-Used to achieve access to the IEEE33 5 node distribution network system in micro grid optimal injection power optimization, using particle swarm algorithm Platform: |
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Author:陈西 |
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Description: 基于遗传算法的IEEE30节点无功优化程序，针对电网的电压损耗作为目标函数进行了优化，优化的目标是使得网损达到最小值。-IEEE30 node reactive power optimization based on genetic algorithm, in view of the grid voltage loss as objective function is optimized, the goal of optimization is to achieve minimum network loss. Platform: |
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Author: |
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Description: 首先介绍了辐射状配电网三相潮流计算方法，对几种常用的配电网潮流计算方法进行了对比分析，着重介绍了配电网潮流计算中常用的前推回代法的基本原理，并利用Matlab仿真软件编写了相应的潮流计算程序，通过33母线系统对计算程序进行了仿真验证。然后介绍了含弱环网的配电网潮流计算的处理方法，编写了相应的仿真计算程序，并通过算例仿真予以验证。接着介绍了分布式电源并网的几种接口模型以及分布式电源在潮流计算中的数学模型，分析了在潮流计算过程中PQ、PV、PI节点的处理方法，特别是对PV节点的处理方法进行了详细的介绍。最后针对不同分布式电源并网的状况分为四种方案进行了仿真测试，验证了本文所编写的潮流计算方法在处理计及分布式电源的配电网三相潮流的正确性。-First introduced the radial distribution network three phase power flow calculation method for several common distribution power flow calculation methods were compared, highlighting distribution power flow calculation of the basic principles of common forward and backward substitution method, and the use of Matlab simulation software written in the corresponding flow calculation program, through the system bus 33 to a simulation calculation program. Then introduces the method of treating a distribution power flow calculation weak ring, write the corresponding simulation program and simulation to be verified by an example. Then interface model introduces several distributed power grid and distributed power flow calculation in mathematical models, analyzes the trends in the calculation process PQ, PV, PI node processing method, especially for PV node approach a detailed description. Finally different distributed power grid situation is divided into four scenarios simulation test to verif Platform: |
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Author:明杰 |
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Description: 基于牛顿拉夫逊法的潮流计算，适用于无分配式电源的配电网，以五节点环形电网为算例分析-Based on the Newton Raphson method, the power flow is applied to the distribution network without distribution power, and the five-node ring power grid is used as an example Platform: |
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Author:俸苓 |
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