-
5
说明: this module shows how well the various wavelet filters perform in practice
- 2009-10-24 17:32:25下载
- 积分:1
-
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
-
GuidedFilter
different matlab implementation of guided filter
- 2013-05-01 00:04:55下载
- 积分:1
-
Modulation-Demonstrate
optisystem下光调制演示,包括AM调制和FM调制等(optisystem Modulation Demonstrate)
- 2015-06-30 12:58:11下载
- 积分:1
-
sanxiangquanqiao
很好的一个三项全桥模型,自己编的,波形很好,大家下载看看(A good three full bridge model, oneself plait, waveform is very good, everyone to download to see
)
- 2014-01-09 14:26:11下载
- 积分:1
-
Multivariate-Statistical-Approaches
book for clustering based method for edge detection in hyperspectral image.
- 2014-02-16 14:43:15下载
- 积分:1
-
ici
contains the gui for ofdm frequency offset.
- 2010-06-26 14:18:23下载
- 积分:1
-
RegionGrow
区域生长的matlab源码
region grow(Matlab source of regional growth region grow)
- 2008-03-20 17:20:23下载
- 积分:1
-
turboencoder_lte
this is a matlab code for turbo encoder in lte system
- 2011-07-10 05:40:16下载
- 积分:1
-
question10
构造并完成飞镖游戏的蒙特卡罗模拟,规则是
飞镖板的区域 分数 飞镖板的区域 分数 飞镖板的区域 分数
牛眼 50 蓝环 15 白环 5
黄环 25 红环 10
以牛眼中心为圆心,每个环的半径为
环 宽度(英寸) 从圆心到环的外边缘距离 环 宽度(英寸) 从圆心到环的外边缘距离
牛眼 1.0 1.0 红环 3.0 8.0
黄环 1.5 2.5 白环 4.0 12.0
蓝环 2.5 5.0
飞镖板的半径为12英寸。
做出关于飞镖投中镖板的概率分布假设,对你的选择写出算法并编程。模拟运行1000次,确定投5次飞镖的平均分数,以及哪个环的期望分数(分数乘以投中这个环的概率)最高。(The Monte Carlo simulation of the darts is constructed and completed according to the rules)
- 2021-04-14 15:18:55下载
- 积分:1