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Description: 采用前推回代法计算配电网潮流的程序，同时给出了IEEE33节点的算例-Using forward and backward substitution method to calculate distribution power flow program, and gives examples of nodes IEEE33
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Author: 刘光时 |
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Description: 一、 牛顿－拉夫逊法概要
首先对一般的牛顿－拉夫逊法作一简单说明。已知一个变量X的函数
（4－6）
解此方程式时，由适当的近似值X（0）出发，根据 （4－7）
反复进行计算，当X（n）满足适当的收敛判定条件时就是（4－6）式的根。这样的方法就是所谓的牛顿－拉夫逊法。
式（4－7）就是取第n次近似解X（n）在曲线 上的点 处的切线与X轴的交点作下一次X（n+1）值的方法。参考图4－2（a）。在这一方法中为了能收敛于真解，初值X（0）的选取及函数f（X）必须满足适当的条件，如图4－2（b）所示的那种情况就不能收敛或收敛到别的根上去。
这一方法还可以做下面的解释，设第n次迭代得到的解与真值之差，即 的误差为 时，则
（4-8）
把 在 附近对 用泰勒级数展开
（4-9）
上式略去 以下的项
（4-10）
的误差可近似由上式计算出来
图4-2
（4-11）
比较式（4-7）和（4-11），可以看出牛顿-拉夫逊法的修正量和 的误差的一次项相等。
用同样的方法考虑，给出对n个变量 -:Because of the importance and complexity of power system, better algorithm and programme language
is very important . An interior point method based on the perturbed Karush2Kuhn2Tucker (KKT) condition is pre2
sented in this paper , where the method and process for the optimal power flow is treated through the Matlab’s
symbolic math toolbox and Mfunction is also presented. Using the symbolic code , it can improve the adaptability
of the programme dramatically. The advantage is that , what we need to do is change the model expression. We
can make use of the symbolic programme to check our programme while we write the Mfunctions. Using the Mat2
lab , we find the optimal solutions and calculate quickly and efficiently. It has proposed the powerful and unique
functions of Matlab in the optimization and calculation for power system.
Key words :power system symbolic calculation optimal power flow interior point method
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Author: 范凯 |
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Description: 计算潮流与最优潮流，应用MATLAB，功能相当强大-Load flow and optimal power flow, application of MATLAB, functions quite powerful
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Author: jdkasj |
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Description: 最新的matpower工具箱，可用于各种用于潮流计算和最优潮流的计算，包括连续潮流和最优潮流-The latest matpower toolbox can be used for a variety of flow calculation and optimal power flow for the calculation, including the continuation power flow and optimal power flow
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Author: 王鹏 |
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Description: 对于大电网潮流计算的一些matlab程序，来源《大电网快速稳定分析关键基础技术研究-Power flow calculation for large number of matlab program, the source of " big power and rapid analysis of key infrastructure technology
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Author: 裘海南 |
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Description: Article of Algorithm to Power Flow: Distribution System Restoration Using Genetic Algorithm.
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Author: Cristiano Gyn |
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Description: Article of Algorithm to Power Flow: Load Flow Solution of Radial Distribution.
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Size: 84992 |
Author: Cristiano Gyn |
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Description: 这里介绍的案例研究演示如何使用MATLAB来建立测量的燃气经营权，在新英格兰的植物组合相关的风险的申请。在Excel中的应用与实施用MATLAB进行了分析所有的接口。该应用程序允许用户指定的7种植物，包括能力，热率，可变操作和维护成本，最低运行时的特点。这个组合可以用一个简单的调度backtested历史天然气和电力价格的策略来计算利润和机组运行的历史数据。风险措施，通过模拟计算到使用天然气和混合模型在MATLAB中实现，模拟市场价格为每调度方案和计算现金流量从厂房的运作产生未来的电力价格。该现金流量的分布进行分析，产生了90％和95％的现金流量在风险衡量每个工厂以及用于发电资产组合。这些功能全部是提出了一个简洁的Excel的前端。
题为“介绍ETRM为例”的文件将指导，通过分析不同的组件。-The case study presented here demonstrates using MATLAB to build an application for measuring the risks associated with a portfolio of gas-fired power plants operated in New England. The application has an interface implemented in Excel with all of the analytics performed by MATLAB. The application allows the user to specify the characteristics of the 7 plants including the capacity, heat rate, variable operation and maintenance costs and minimum run time. This portfolio can be backtested using a simple dispatch strategy on historical gas and electricity prices to compute historical profit and plant operation statistics. The risk measures are computed by simulating gas and electricity prices into the future using a hybrid model implemented in MATLAB, simulating the dispatch for each scenario of market prices and computing cash-flows arising from the operation of the plants. The distribution of the cash-flows is analyzed to produce a 90 and 95 cash-flow at risk measure for each plant
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Author: zhou |
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Description: IC Flow power point presentation useful for the designing of vlsi chips
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Author: raj |
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Description: Unified Power Flow Placement
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Author: behrouz |
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Description: 径向函数神经网络的三种算法,里面是一维输入，一维输出，很容易推广到多维，拟合的效果很好-Radial basis function neural network for power system load-flow
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Author: lan |
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Description: Optimal power flow with Matlab codes
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Author: Tau |
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Description: These files gives information of unified power flow control
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Author: yogi |
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Description: 电网潮流计算教程Power Flow Tutorial-Power Flow Power Flow Tutorial Tutorial
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Author: 0o0o |
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Description: A PAPER ON IPFC INTER LINE POWER FLOW CONTROLLER
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Author: amith |
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Description: Xilinx Flow Power point Presentation
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Size: 2069504 |
Author: Amar |
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Description: Distribution systems power flow
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Size: 35840 |
Author: jacob |
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Description: Distribution systems power flow analysis package using Matlab graphical user interface-Distribution systems power flow analysis package using Matlab graphical user interface
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Author: jacob |
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Description: 优秀论文配套源码。分布式电源的接入使得配电系统从放射状无源网络变为分布有中小型电源的有源网络。带来了使单向流动的电流方向具有了不确定性等等问题，使得配电系统的控制和管理变得更加复杂。但同时，分布式电源又具有提高电网可靠性，绿色节能，等等优点，所以为更好的利用分布式电源为人类造福，我们必须对其进行研究与分析。
本文采取通过利用仿真软件Matlab编写计算潮流程序模拟分布式电源接入配电网的模型进行潮流计算的方法对分布式电源的稳态影响进行探索与分析。
选取了34节点的配电网网络模型，通过对单个以及多个分布式电源的接入位置以及容量的不同情况对34节点配电网的网损以及节点电压状况进行了分析。
-The distributed generation access to distribution system makes passive radial distribution network to active medium-sized power distribution network. It brings uncertainty to one-way direction power flow, etc., and it makes the control and management of the distribution system more complicated. Otherwise, it can bring a lot of benefits, such as more reliable, and it is green power. The distributed generation should be better known , so we can benefits more.
So the program called Matlab was used to compile a program to solve the power flow problem. By this program, we can text which factor can influence the distributed generation’s access to the distribution system.
The IEEE 34 Node model was chosen to be discussed how different factors can influence the power quality. This article analyzes distributed generation’s influence to the distribution system of energy lost and voltage level.
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Author: NBB |
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Description: GA.dll是封装遗传算法的动态连接库，内部潮流计算使用的是PQ方法，该潮流计算方法已封装在该DLL内。如果需要采用其他的潮流计算方法，需要重新来设计DLL的接口函数及更改遗传算法中目标函数的计算方法。-GA.dll genetic algorithm is encapsulated dynamic link library, the internal flow calculation using the PQ method, the power flow calculation method has been encapsulated within the DLL. If you need to use other flow calculation method, need to re-DLL interface functions to design and change the objective function of genetic algorithm method.
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Author: 德软信息 |
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