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Power engineering (electric power engineernming), just as its name implies is refers to and the production of electric energy, transportation, distribution of the engineering, generalized are electricity as power and energy in a variety of areas of the applications of the project. 代写英语论文网www.51lunwen.org

留学生工程论文怎么写？这个是令人非常头疼的事情。我们举个例子，电力工程（electric power engineernming），顾名思义就是指与电能的生产、输送、分配有关的工程，广义上还包括把电作为动力和能源在多种领域中应用的工程。
Core clew: a lot of the graduates near power engineering papers don't know how to format, perhaps because of the practice and no time. In fact power engineering paper format is about the same, Chinese engineering master thesis here provide you a network to power engineering papers model essay "the power factor and energy saving method study" : the paper theoretically expounds the significance of improving power factor, and improve enterprise in equipment 留学生工程论文网of natural power factor method, and the artificial compensation device carries on the analysis comparison. Power supply the power factor of system, depending on the size of the reactive power, reactive power, the bigger the power factor is lower...

核心提示：很多临近毕业的同学不知道电力工程论文的格式具体如何，也许是因为实习工作而没有时间吧。其实电力工程论文格式都差不多，这里中国工程硕士论文网为大家提供一篇电力工程论文范文《功率因数与节能方法探讨》:本文从理论上阐述了提高功率因数的重要意义，以及提高企业用电设备自然功率因数的方法，并对人工补偿装置进行分析比较。供电系统的功率因数，取决于无功功率的大小，无功功率越大，功率因数越低...
The use of advanced mathematics analysis tools, put forward a new dynamic power quality disturbance waveform identification method. By using wavelet and fractal inner link, from the wavelet transform coefficients, the extraction of the disturbance of global fractal index of a draw as a dynamic fractal exponent of the disturbance of power quality character, and constructs the recognition of fractal type disturbance index wavelet analysis method. The scale of mathematical morphology from coarse to fine to the signal, the characteristics of the layered treatment, from the dynamic of the disturbance of power quality of wave, the establishment of a complete new multi-level description and multi-level processing disturbance identification methods. By PSCAD/EMTDC software simulation to get 12 kinds of typical dynamic power quality disturbance waveform recognition, prove the correctness. The method for dynamic of the disturbance of power quality inspection, identification and classification provides new ideas.

摘要：利用先进的数学分析工具，提出全新的动态电能质量扰动波形的辨识方法。利用小波与分形的内在联系，从小波变换后的系数中，提取扰动的全局分形指数和局部分形指数作为动态电能质量扰动的特征，建立了识别扰动类型的分形指数小波分析方法。利用多刻度数学形态学由粗到细地对信号进行分层处理的特点，从动态电能质量扰动的波形出发，建立一种全新的多层次描述和多层次处理的扰动辨识方法。对由PSCAD/EMTDC 软件仿真得到的 12 种典型动态电能质量扰动波形的识别，证明了其正确性。该方法为动态电能质量扰动的检测、识别与分类提供了新的思路。

关键词：动态电能质量；小波变换；分形指数；数学形态学

结 论
（1）本文提出了两种全新的动态电能质量波形辨识的暂态分析方法，即分形指数小波分析方法和多刻度形态谱分析方法，结果表明本文方法正确。
（2）分形指数小波分析方法不但能对单一扰动进行识别，而且能在若干种扰动叠加的情况下，提取关键事件的信息，从而找出关键性的扰动特征量。
（3) 利用多刻度形态学分析各种动态电能质量，可以克服傅立叶变换在暂态信号和谐波分析上的缺陷，能避开小波变换在分析一阶连续信号时的缺陷，不受时窗的限制。
（4）利用形态谱表征动态电能质量，适当选择结构函数的幅值和信号采样率，分析结果将只受结构函数形状的影响。

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[7] 吴竞昌. 供电系统谐波 [M]. 北京本论文由英语论文网提供整理，提供论文代写，英语论文代写，代写论文，代写英语论文，代写留学生论文，代写英文论文，留学生论文代写相关核心关键词搜索。