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Detection-of-short-duration-power-quality-disturba
优秀论文及配套源码。电压暂降是动态电能质量问题中最受关注的热点之一。大量新型电力电子设备的广泛使用对电网电能质量的要求越来越高，而且电压暂降在电网中又具有一定的传播性。因此，无论从电网还是用户都迫切需要对电压暂降进行研究和治理。对电压暂降的检测是解决电压暂降的前提条件，故本论文主要对电压暂降的检测方法进行研究。
本文分析了国内外短时电能质量扰动检测的研究现状，并着重讨论了短路故障、感应电动机启动和变压器激磁三种电压暂降扰动情况下电压暂降的特性；在此基础上选择了基于S变换的短时电能质量扰动检测方法，从S变换的结果S模矩阵及S复矩阵中提取出所需数据并以此来对各种扰动情况下的电压暂降的幅值、相位跳变、持续时间和谐波含量进行分析。仿真结果表明，该方法很好地实现了对电压暂降各特征量的检测。
(The voltage sag is one of most hot topics in dynamic electric energy problems. Masses of new power and electron facilities have been put into use widely, requiring a high quality of electric network and power, chiefly the voltage sag. Moreover, the voltage sag can spread in the electric network. So people have every reason to research and control the voltage sag. However, before developing the voltage sag, people have to detect it. On account of the above, this essay will chiefly focus on the detect methods of the voltage sags.
In this paper, the status of the short duration power quality disturbance based on the different method are researched firstly, and emphasizes the characteristic of the voltage sag under the situation of the three kinds of voltage sag disturbances like the short circuit fault, induction motor start-up and transformer excitation. On the basis of the above, the short duration power quality disturbance detection method based on S transform is chosen. The complex m)
- 2021-04-08 19:39:00下载
- 积分：1
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dscdma
直接序列扩频（Direct Sequence Spread Spectrum）工作方式，简称直扩方式（DS方式）。就是用高速率的扩频序列在发射端扩展信号的频谱，而在接收端用相同的扩频码序列进行解扩，把展开的扩频信号还原成原来的信号。(irect Sequence Spread Spectrum (Direct Sequence Spread Spectrum), hereinafter referred to as Direct expansion mode (DS). Is a high rate of spread spectrum sequence extension in signal spectrum, and at the receiving end with the same spread spectrum code sequence for expansion, the expansion of the spread spectrum signal back into the original signal. )
- 2013-12-08 15:19:07下载
- 积分：1
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DiscriminantAnalysis
通过介绍判断分析的相关内容，提供了相关的算法，很好，很全面(By introducing the judgments of the relevant content, providing the relevant algorithm, very good, very comprehensive)
- 2010-08-15 17:13:29下载
- 积分：1
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fenbu
电磁学代码，matlab编写绝对自己创作的(Electromagnetics code, matlab absolutely prepared their own creation)
- 2008-06-14 11:46:55下载
- 积分：1
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dialation_sk
Matlab code for segmentation
- 2012-03-20 18:30:19下载
- 积分：1
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SAMPLE1.14
根据采样定理对信号采样，之后依据采样值恢复原信号。恢复的信号基本一致，验证性(Signal is sampled according to the sampling theorem, and then restore the original signal based on sampled values. Recovered signal basically the same, confirmatory)
- 2013-09-19 22:06:49下载
- 积分：1
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image
image proccesing improved digital image by frequency filter
- 2014-11-13 18:27:36下载
- 积分：1
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curve-ray-trace-and--travel-time
地震射线追踪、走时曲线以及地震记录正演模拟、去噪等程序。(Seismic ray tracing, travel time curves and forward modeling of seismic records, de-noising and other procedures.)
- 2015-04-05 17:07:32下载
- 积分：1
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三D装箱MATLAB
说明： 求解三维装箱问题的启发式算法，利用Matlab语言进行实现，包含所有m函数名文件(seek/find the solution (of a mathematical problem) heuristic approach)
- 2020-12-22 21:08:53下载
- 积分：1
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logistic1
logistic映射分岔图的四种实现方法(logistic map bifurcation diagram of the four implementations)
- 2011-02-15 18:17:49下载
- 积分：1
