简要分析串联三相桥式12脉波整流电路的基本原理，针对谐波对电网的影响以及提高功率因素，采用谐波注入三相桥式12脉波整流电路，实现24脉波无源多电平整流。基于matlab/simlink建立谐波注入12脉波整流电路的仿真模型。实验结果表明，谐波注入法明显降低交流侧电流的谐波含量和输入电流总畸变率（THD），同时改善功率因素，大大降低了谐波对电网的干扰，提高了电能的利用率。
上传时间： 2013-11-14
上传用户：edward_0608
Abstract: The rapid build out of today's smart grid raises a number of security questions. In this article,we review two recent well-documented security breaches and a report of a security gap. These situationsinclude a 2009 smart-meter hack in Puerto Rico; a 2012 password discovery in grid distributionequipment; and insecure storage of a private key in distribution automation equipment. For each of theseattacks, we examine the breach, the potential threat, and secure silicon methods that, as part of acomplete security strategy, can help thwart the attacks.
上传时间： 2013-10-27
上传用户：tecman
各个国家的电压和频率的标准和图纸。
上传时间： 2013-10-28
上传用户：fredguo
为了提高电力系统负荷预测的精度与速度的需求，提出使用交替梯度算法改进径向基函数（RBF） 神经网络， 对天津市电网进行负荷预测。改进的算法与传统梯度下降算法相比，具有更快的收敛速度和更高的预测精度。 仿真结果表明该算法具有可行性。
上传时间： 2013-10-31
上传用户：waixingren
为提高发电机并联供电时负载分配均衡性，以运X飞机分布式环形配电网络为背景，运X飞机配电系统中的八台发电机采用分组并联的方式接入配电网，选取前舱配电系统上的两台发电机，研究当两台直流发电机分组并联时的负载分配均衡性条件，以及影响负载均衡分配的因素，更进一步提出负载均衡分配的解决方法。
上传时间： 2013-11-05
上传用户：zhanditian
Abstract: It may sound trite, but it is definitely true: the smart grid has the potential to completely transform the energyindustry. However, smart meters and grid management alone will not ensure the success of the smart grid. Unliketraditional IT networks, smart grids require consideration of energy measurement and security. To completely optimize thistechnology, smart grid designs must focus on energy measurement and security. This tutorial considers the benefits ofboth energy measurement and security and how they make machine-to-machine networks different from traditional IT.
上传时间： 2013-10-29
上传用户：皇族传媒
针对10 kV农村电网电压质量问题，提出了一种新型的有载调压器--10 kV馈线自动调压器的设计方法，即详细说明了该调压器档位动作电压的整定原理及档位控制器的设计。该装置具有良好的控制和保护功能，并且可以通过无线通信实现外部控制。
上传时间： 2013-11-16
上传用户：Huge_Brother
在现代配电自动化系统中，越来越多的智能电子设备用于监控电网质量，并能迅速隔离任何故障，以免影响电网整体运作。此类设备架构主要由处理器、多通道ADC、信号调理电路、电源和通信接口组成。ADI公司作为全球混合信号处理技术领先者，是该领域的主要电子系统解决方案供应商。
上传时间： 2014-01-07
上传用户：xyipie
Abstract: Stuxnet, a sophisticated virus that damaged Iran's nuclear capability, should be an eye openerfor the world. We can choose to learn something very narrow (how to combat the Stuxnet virus) or wecan choose to focus on the larger goal of thwarting the next type of creative cyber attack. Unfortunately,critical industrial infrastructure is not currently designed with security as a key goal, leaving open multipleavenues for an educated and funded attacker to create massive problems. This tutorial outlines somebasic concepts that engineers and product definers should consider to make sure their new projects stayahead of future threats.
上传时间： 2013-11-17
上传用户：llwap
为了解决电力系统谐波检测中存在的检测精度低的问题，提出一种改进的全相位时移相位差频谱校正算法，消除了相位值对采样中心样点的依赖性。将该算法用于电网含有谐波以及间谐波的测量分析，结果表明该算法在中高信噪比情况下相位误差小于1°，具有估计精度高且稳定性好的特点。
上传时间： 2014-12-24
上传用户：dajin
