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Description: 在大功率DC/DC开关电源中,为了获得更大的功率，特别是为了得到大电流时，经常采用N个单元并联的方法。多个单元并联具有高可靠性，并能实现电路模块标准化等优点。然而在并联中遇到的主要问题就是电流不均，特别在加重负载时，会引起较为严重的后果。普通的均流方法是采取独立的PWM控制器的各个模块，通过电流采样反馈到PWM控制器的引脚FB或者引脚COMP，即反馈运放的输入或者输出脚来调节输出电压，从而达到均流的目的。显然，电流采样是一个关键问题：用电阻采样，损耗比较大，电流放大后畸变比较大；用电流传感器成本高；用电流互感器采样不是很方便，同时会使电流失真。本文提出了一种新型的、方便的、无损的电流采样方法，并在这种电流检测方法的基础上实现了并联系统的均流。 -in High Power DC/DC switching power supply, in order to gain more power, in particular in order to obtain the current, frequently using N units parallel method. Parallel number of modules with high reliability, and the circuit module can achieve the advantages of standardization. However, in parallel encountered in the current main problem is uneven, particularly in the heavier load, it will cause more serious consequences. The general flow is to have an independent PWM controller modules, Current sampling through feedback to the PWM controller pin FB pin or COMP. that feedback operational amplifier input or output pin to adjust the output voltage, thereby achieving both flow purposes. Clearly, the current sampling is a key question : sampling resistor, loss comparison, the amplifier dis
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Size: 12288 |
Author: duanshaochun |
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Description: DC load flow is a method to estimate power flows through lines on AC power systems. It uses a modified version of AC load flow using a linearized version of it. Programming is done in Matlab.
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Size: 1024 |
Author: mmbaskr |
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Description: dc load flow matlab code
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Size: 1024 |
Author: albertnikpendar |
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Description: program for dc load flow.
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Size: 1024 |
Author: navtej |
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Description: 应用于电力系统中的概率直流潮流算法，Probabilistic DC load flow-Applied to the probability of the DC power system load flow algorithm, Probabilistic DC load flow
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Size: 36864 |
Author: h |
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Description: dc load flow in power system. linear proggramming model use in dc power flow of power system.
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Size: 3072 |
Author: javad |
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Description: 电力系统直流潮流计算，matlab实现IEEE10机系统的直流潮流计算-DC power system load flow calculation, matlab realize IEEE10 machine system DC power flow calculation
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Size: 10240 |
Author: zhangxue |
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Description: 多端直流输电系统(multi-terminal DC，MTDC)为解决
大型风电基地功率外送的瓶颈问题提供了一个最佳解决方
案。研究了基于电压源换流器(voltage source converter，VSC)
的多端直流输电系统应用于大规模风电功率长距离外送时
的协调控制策略。通过构建一个四端系统连接两个大型风电
基地及本地电网向远方负荷中心进行功率输送，实现了风电
场的功率汇集和外送。仿真验证了该协调控制策略在大扰动
情况下，不仅能够提高VSC-MTDC系统潮流重新分配的能
力，而且可使风电场对直流网络提供一定功率支撑，增强了
电力系统动态稳定性
-Multi-terminal DC (MTDC) power transmission
system is regarded as the optimal solution scheme to sent out
power from large-scale wind farm. A coordinated control
strategy for voltage source converter (VSC) based MTDC
transmission system applied to long-distance power
transmission from large-scale wind farm is researched. By
means of constructing a four-terminal system connecting two
large-scale wind power bases with local power grid to send out
power to faraway load center, the wind power converging and
sending out by the proposed coordinated control strategy are
implemented. Simulation results show that the proposed
coordinated control strategy not only can improve the ability of
reallocating power flow in VSC-MTDC transmission system
under large disturbance, but also can make wind power base
providing a certain power support to DC transmission network,
thus the dynamic stability of power grid can be enhanced.
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Size: 645120 |
Author: chenchen |
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Description: dc load flow equation that is for power flow
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Size: 342016 |
Author: ali |
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Description: Reliability Assessment With Dc Load Flow
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Size: 19456 |
Author: mostafa |
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Description: DC load flow 1
DC power flow is a simplification of a full power flow looking only at active power flows.
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Size: 1024 |
Author: javidmehrnoosh |
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Description: DC load flow 2
DC power flow is a simplification of a full power flow looking only at active power flows.
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Size: 1024 |
Author: javidmehrnoosh |
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Description: 将网损价格因子和网损协调系数引入目标函数,建立了改进直流潮流模型,实现了负荷在机组间的最优分配 利用交流潮流方法计算系统实际网损,并利用增量直流潮流模型将网损在机组间进行合理分摊 最后利用交直流迭代思想修正网损价格因子和网损协调系数以优化网损分配方案。IEEE14节点和IEEE118节点算例验证了该方法的可行性,算例结果充分逼近了交流最优潮流的计算结果,符合实际系统运行状况。-The net loss and net loss of coordination price factor introduced in the objective function coefficients, the establishment of an improved DC power flow model to achieve optimal distribution of load between units computing systems use the actual net loss of AC power flow method and the use of incremental DC power flow model Net loss reasonably apportioned among the crew Finally, AC-DC iteration thought the price factor correction network loss and net loss of coordination coefficients to optimize network loss allocation scheme. IEEE14 and IEEE118 node examples node to verify the feasibility of the method, numerical results approaching full AC optimal power flow calculation results, in line with the actual system operating conditions.
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Size: 804864 |
Author: 杰 |
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Description: DC LOAD FLOW TECHNIQUE
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Size: 9216 |
Author: krunal |
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Description: this program is Dc load flow program in matlab u should input data and run this code.
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Size: 1024 |
Author: Hojat |
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Description: matlab 直流潮流计算程序 DCpowerflow-matlab DC load flow calculation program DCpowerflow
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Size: 3072 |
Author: 李睿 |
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Description: how to calculate dc load flow
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Size: 220160 |
Author: davood |
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Description: coding of dc load flow in matlab
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Size: 1024 |
Author: SHWETA RANI |
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Description: It will do the dc load flow in Power system
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Size: 1024 |
Author: Anulipt Chandan |
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Description: 电力市场中计算直流潮流程序，结合杜松怀版电力市场例题的程序，简单实用-DC load flow calculation in electricity market program, combined with Du Songhuai example electricity market version of the program, simple and practical
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Size: 1024 |
Author: yuyuan |
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