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SVG-rational
- 近2 年随着设备厂家的宣传推广,SVG装置在国内的钢铁,煤炭,港口,风电 等电能质量问题较严重的行业的应用兴旺起来,SVG装置的直挂电网的电压等级 已经达到35KV,形成了 380 660 1140 3300 6 10 35 全系列的产品. 除清华电机系2006年初在上海西郊变投运的50MSVG以外,真正以招投标方式 采购的直挂电网的IGBT高压SVG装置2008年初才投运.至今高压直挂电网的 SVG装置估计已超过 500 套以上。 -Nearly two years o
MAXQ3180_cn
- MAXQ3180中文版说明书。MAXQ3180是专用的电气参数测量前端，它采集并计算多相负载的多相电压、电流、功率、 能量等多种计量参数和功率品质参数-MAXQ3180 Chinese version manual. MAXQ3180 is dedicated front-end measurement of electrical parameters, which collect and calculate the multi-phase multi-phase load voltage, c
MLX75305
- MLX75305是一款集成的传感器IC，这意味着光敏二极管、跨阻放大器以及线性电压输出阶都包括到了传感芯片中。这保证了所有时间和温度下稳定的光敏感度，而且与使用数字光敏二极管的设计相比极大的改善了噪声特性。器件简化了应用设计，需要更少的外部器件并改善了质量。-MLX75305 is an integrated sensor IC, which means that photodiodes, transimpedance amplifier and linear voltage output st
Study-on-the-Control-Scheme
- 恒频恒压(CVCF)逆变电源的输出电压波形质量是衡量其性能的重要指标之一。文章采用一种重复控制和双闭环控制相结合的电压波形控制策略，以重复控制器提高逆变电源输出电压的稳态精度，减小总谐波畸变率；以双闭环控制器达到较快的动态响应速度。该方案在一台采用TMS320F240 DSP控制芯片的50 Hz三相PWM逆变器上得到验证。-Constant voltage constant frequency (CVCF) Inverter output voltage waveform quality is
Pic16f716-digital-voltage
- Pic16f716高质量C数显电压字表源代码,内含：ISIS 7 Professional硬件仿真，源代码，PIC16F716数据手册-Pic16f716 digital voltage high-quality C source code word table, containing: ISIS 7 Professional hardware simulation, source code, PIC16F716 Data Sheet
POWER-QUALITY
- Injection of the wind power into an electric grid affects the power quality. The performance of the wind turbine and thereby power quality are determined on the basis of measurements and the norms followed according to the guideline specified
211-herrera
- Article_herra Distorted voltage and current waveforms is one of the problems associated to electric power quality. Continuous use of non-linear loads provokes the existence of voltage waveforms with a high distortion. Thus, it is necessary to k
04124618_power_quality
- This paper deals with the problem of power quality estimation in ship systems during their exploitation stage. The exemplary results of experimental research have been shown and present rules concerning power quality in ship’s networks have bee
dianyabodongyushanbian
- 电压波动与闪变是电能质量的一个重要问题 在电力系统仿真中占据极其重要的位置-Voltage fluctuation and flicker occupy an extremely important position is an important issue of power quality in power system simulation
TDC-GP21
- 在 2010 年的11 月底，德国 acam公司在原有的基础上，又专门针对超声波热量表的一些特 性，进行了更深入的研究和改进，最终推出了新一代针对超声波热量表所设计的的芯片 TDC‐ GP21。这颗芯片为 QFN32 管脚的封装形式。这颗芯片而除了具备了 TDC‐GP2的功能以外，还 额外集成了超声波热量表所需要的信号处理模拟部分，比如模拟开关，以及低噪声斩波稳定 （自动进行温度电压校正）模拟信号比较器，以及内部集成了温度测量所需施密特触发器，使 超声波热量表的设计
Principles-of-Power-System-(V.K.-Mehta-a-Rohit-Me
- restorer (DVR), shunt connected compensator such as distribution static compensator (DSTATCOM), and a combination of series and shuntconnected compensators known as unified power quality conditioner (UPQC) [2, 4-6]. The series connected compensator c
New-Folder
- The technologies like custom power devices are emerged to provide protection against power quality problems. Custom power devices are mainly of three categories such as series-connected compensator like dynamic voltage restorer (DVR), shunt connecte
4
- 对广大供电企业来说，用户功率因数的高低，直接关系到电力网中的功率损耗和电能损耗，关系到供电线路的电压损失和电压波动，而且关系到节约电能和整个供电区域的供电质量，这是众所周知的道理。提高电力系统的功率因数，已成为电力工业中一个重要课题。文中简要集中探讨了影响电网功率因数的主要因素以及低压无功补偿的几种实用方法，和确定无功补偿容量从而提高电力系统功率因数的一般方法。-For the majority of power supply enterprises, the level of user pow
00759919
- his paper presents the analysis of real power system events recorded at a light industrial site to determine the effect of a shunt active filter on power quality. The shunt active fdter is shown to improve power quality by lowering the disto
Z2103Sch.pdf
- Schematic of ZLPC2103 evaluation board saik on www.the0.net The Zero Research Institute presents a brand new ZLPC2103 Development Board for Philips NXP LPC2103 ARM Family. The ZLPC2103 Development board helps you get started writing programs and
128705676-InTech-Improved-power-quality-ac-dc-con
- The inter-harmonics are due to the presence of additional frequencies which are non-integral multiples of the mains frequency. Moreover, notching is a periodic voltage disturbance caused by the normal operation of power electronic devices when
Locating-Voltage-Sags
- 电压跌落是最严重的动态电能质量问题之一， 精确定位电压跌落起止时间是应对电压跌落问题的 重要前提和基础。由于电压采样信号往往有噪声分 量，现有的方法在定位电压跌落的起止时间时存在 局限性。本文提出利用多小波变换及相邻系数去噪 的电压跌落定位方法。多小波兼有对称性、正交性、 有限支撑性和二阶消失矩等优异的信号处理性能， 利用GHM多小波可以准确定位电压跌落起止时间。 多小波变换系数在每层之间具有对应关系，多小波 相邻系数将紧相邻的若干个系数作为一个整体来确
Power-Quality---Voltage-Fluctuations-and-Flicker.
- POWER POINT FOR Voltage Fluctuations and Flicker
2.1 主动配电网电能质量分析与评估
- 本文所做主要工作有： 1）简要介绍了主动配电网的基念。 2）研究了主动配电网中各个主要组成部分的模型，包括变型、输电型、负型和DG模型，并根据主动点，建立了网评价指标体系。 3）分析并搭建了主动配电网基本模型，并对主动配电网的4项电能质量指标进行了分析，包括谐变、电差、三相衡和电压闪变。 4）分析了分布式电源接入主动配电网后的电能质量问题，提出了主动配电网电能质新指方法，通过电量变化量指统指标来评估主动配质量，并对算例进行了分究，表明了该方效性。(The main work of thi
OPF control of dc grid
- 针对直流电网中的最优潮流问题，提出了一种基于模糊控制理论的自适应粒子群算法，以实现电网兼顾有功网损和电压质量的优化运行。(To solve optimal power flow problem in DC grid, an adaptive particle swarm optimization (PSO) algorithm based on fuzzy control theory is proposed in this paper, and optimal operation consi