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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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jpeg5
this fille contain matlabsource code
- 2010-12-30 19:31:24下载
- 积分：1
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07950213
扩频通信系统仿真 ——系统将基带信号（即信息）的频谱扩展至很宽的频带上，然后再进行传输，即将欲传输的信息数据用伪随机序列编码调制，实现频谱扩展，然后通过信道编码发送出去；接收端采用与发送端完全相同的伪随机序列作为本地解扩信号进行相关处理，以恢复信息，最后进行解调，完成整个系统的接收。(Simulation of spread spectrum communication system- the system baseband signal (ie, information) be extended to a wide spectrum of frequency bands, and then transferred, will want to use transmitted information data sequence of pseudo-random code modulation, to achieve expansion of the spectrum, and then sent channel coding receiver and transmitter use the same pseudo-random sequence as related to the local despreading signal processing, in order to restore the information, the final demodulation, the receiver to complete the system.)
- 2011-04-23 14:41:40下载
- 积分：1
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wind_dfig22
双馈风力发电系统的较详细模型，包含了网侧和机侧的控制算法，可以调试运行！(A more detailed model of doubly-fed wind power generation system, including the control algorithms network side and the machine side, you can debug run!)
- 2014-08-26 14:44:50下载
- 积分：1
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Fuzzycmeans
fuzzy cmeans program in matlab for segmentation
- 2013-07-26 04:16:55下载
- 积分：1
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ss
说明： matlab source code for modulation
- 2010-07-28 13:56:26下载
- 积分：1
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xiaobomojidazhi
可以提取信号的突变量，用于电力系统故障测距方面(Mutations in the signal can be extracted amount of respect for the power system fault location)
- 2011-06-05 10:49:43下载
- 积分：1
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AR-model-power-spectrum-estimation
功率谱估计性能分析及其MATLAB实现，间接法、直接法、改进的周期图法Welch法、Bartlett法
(Power spectrum estimation performance analysis on MATLAB, the indirect method, direct method, improved periodogram the Welch Law, Bartlett method)
- 2012-11-27 11:28:43下载
- 积分：1
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strapdown
对捷联惯导的速度、经纬度、姿态角等参数进行解算(A programme to compute the speed,latitude,longitude and attitude of strapdown inertial navigation system)
- 2021-04-20 17:48:50下载
- 积分：1
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hopfield
MATLAB code that implements Hopfield CAM algorithm
- 2012-10-25 04:02:39下载
- 积分：1
