Description: With increasing wind penetration in power systems, many national
grid codes will demand complete models and simulation
studies under different system conditions in order to ensure that
the connection of a wind farm will not have a detrimental impact
on the network to which it will be connected.
Hence a dynamic model with reduced-order double cage representation
for the DFIG and its associated control and protection
circuits has been developed. It was then used to simulate
the response of wind turbine to network faults on a simple two
busbar system. Platform: |
Size: 50176 |
Author:Malek Drif |
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Description: 针对光伏并网发电系统中关健部件—逆变器的结构设计与控制方法研究进行了详细分析
和阐述。从电网、光伏阵列以及用户对逆变器的要求出发, 分析了各种不同的逆变器拓扑结构与控
制方法, 比较其运行效率和控制效果。对于本文提出了一种基于全桥变换器的正弦波逆变电源的整体设计
方案。文章首先对系统设计中将使用到的DC/DC变换器，DC/AC变
换器以及PWM控制技术在理论上进行了深入的研究。并讨论了数字
式PID控制算法的实现和在系统中的应用，还针对这种基于全桥变换
器的正弦波逆变器提出了一种用一个电压闭环来调节两个控制量的
PID算法。
其次，文章设计了基于全桥变换器、全桥逆变器和以DSP为核
心的逆变电源控制电路，详细介绍了各相关电路模块的原理与结构。
在完成电路参数设计以后，通过使用MATLAB/Simulink软件对整个
系统进行了仿真分析。并对系统软件设计的思路与实现方法以及关键
程序的流程进行了介绍。
最后，通过系统的带载实验对整套系统软硬件设计的合理性进行
了验证。实验结果表明，本文设计的逆变电源硬件电路和软件系统是
成功的。
-The paper comes up with a full-package solution to convert solar power
into AC.This solution is based on the design of the full-bridge converter
and the full-bridge inverter.This paper first gives full analysis on the
theories of power switching technology,inverter technology and PWM
technology.And the theory and fulfillment of PID algorithm are
discussed in this paper.Especially for this solution,this paper comes up
with a PID algorithm in which two variables are being controlled in one
close-loop.
Then,this paper gives the procedure to calculate the main circuit
parameters.The design of digital controlling circuit and assistant circuits,
such as MOSFET driving circuit and voltage protection circuit,are
introduced.Based on the parameters worked out,the paper gives the
simulation of whole system in Matlab/Simulink.This paper also
introduces the firmware design based on the DSP（TMS320F2812）.
The last is the verification of whole system including hardware and
software by t Platform: |
Size: 1939456 |
Author:fmx |
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Description: This paper describes the problem of voltage sags and swells and its severe impact on non linear loads or
sensitive loads. The dynamic voltage restorer (DVR) has become popular as a cost effective solution for the
protection of sensitive loads voltage sags and swells. The control of the compensation voltages in
DVR based on dqo algorithm is discussed. It first analyzes the power circuit of a DVR system in order to
come up with appropriate control limitations and control targets for the compensation voltage control. The
proposed control scheme is simple to design. Simulation results carried out by Matlab/Simulink verify the
performance of the proposed method.-This paper describes the problem of voltage sags and swells and its severe impact on non linear loads or
sensitive loads. The dynamic voltage restorer (DVR) has become popular as a cost effective solution for the
protection of sensitive loads voltage sags and swells. The control of the compensation voltages in
DVR based on dqo algorithm is discussed. It first analyzes the power circuit of a DVR system in order to
come up with appropriate control limitations and control targets for the compensation voltage control. The
proposed control scheme is simple to design. Simulation results carried out by Matlab/Simulink verify the
performance of the proposed method. Platform: |
Size: 257024 |
Author:pavan |
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Description: of the electrical power system. At the time of transformer energization high current is drawn by the transformer known as the inrush current. This current is nearly ten times more than the full load current of transformer. It produces mechanical stress on transformer and also affects the windings and bushings of the transformer. The large switching transient current affects malfunction of protection system of power system and the different equipments connected to system. So the inrush current should be minimized. There are different methods used to minimize the inrush current such as volt second balance, series compensator, point on wave switching method etc. This paper focuses on point on wave switching method. It also explains the results for inrush current of three phase transformer with and without point on wave switching method. A test is driven on 450 kVA, 500kV/230kV grounded Y/D transformer in MATLAB/SIMLINK environment. It also focuses on Platform: |
Size: 58368 |
Author:rezwan |
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Description: 保护最优程序，用matlab编写，适合电力系统从业人员使用。-Optimal protection program , written in matlab, practitioners use for the power system .
Platform: |
Size: 64512 |
Author:李锴科 |
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Description: 基于Matlab/Simulink建立的变压器仿真模型，模型是一个具有双侧电源及三相双绕组变压器的简单电力系统，可以用来分别仿真变压器保护区内部故障和外部故障。-Based on MATLAB/Simulink to build the simulation model of the transformer, the model is a bilateral power and three-phase double winding transformer of power system can be respectively used for simulation of transformer protection zone internal faults and external faults.
Platform: |
Size: 12288 |
Author:王永 |
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Description: 《matlab/simulink电力系统建模与仿真》是一本针对电气工程及其自动化专业的mati,ab／simulink仿真入门教材。《matlab/simulink电力系统建模与仿真》涵盖了电力系统稳态分析、电力系统暂态分析、电力系统继电保护、高压直流输电、柔性输电以及风力发电等主干课程。-" Matlab/simulink power system modeling and simulation" is a mati for electrical engineering and automation professional, ab/simulink simulation primer. " Matlab/simulink power system modeling and simulation," covering the steady state power system analysis, power system transient analysis, power system protection, HVDC, FACTS and wind power and other main courses. Platform: |
Size: 25949184 |
Author:萧明 |
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Description: 利用MATLAB的程序对电力系统继电保护的程序进行编程，可以学习一下(Using MATLAB's program to program the relay protection program of power system, we can learn something about it.) Platform: |
Size: 769024 |
Author:hjjq |
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Description: 本书共9章，第1章为MATLAB基础知识；第2章为Simulink仿真入门；第3章为电力系统元件模型及模型库介绍；第4章为MATLAB在电力系统潮流计算中的应用实例；第5章为MATLAB在电力系统故障分析中的仿真实例；第6章为MATLAB在电力系统稳定性分析中的应用实例；第7章为MATLAB在微机继电保护中的应用实例；第8章为MATLAB在高压直流输电及柔性输电中的仿真实例；第9章为MATLAB在风力发电技术中的应用仿真。(There are 9 chapters in this book, and the first chapter is MATLAB basic knowledge; Chapter 2 is an introduction to Simulink simulation; Chapter 3 introduces the power system component model and model library. Chapter 4 is an application example of MATLAB in power system trend calculation. Chapter 5 is a simulation example of MATLAB in power system fault analysis. Chapter 6 is an application example of MATLAB in power system stability analysis. Chapter 7 is an application example of MATLAB in microcomputer relay protection; Chapter 8 is a simulation example of MATLAB in HVDC transmission and flexible transmission. Chapter 9 is the application simulation of MATLAB in wind power generation technology.) Platform: |
Size: 2359296 |
Author:帅1点点 |
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