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Limits of technical index frequency: 100kHz~50GHz, depend on probe power limits:- 70~+44dBm(100pW~25W), depend on probe power probe: As compatible as probe of HP8480 series power dynamic limits: 50dB, 10dB pace takes indication unit: Absolute power: W, DBm; Relative to power: Per cent, DB resolution: In resolution of logarithm mode optional 0.1, 0.01 with 0.001dB; 1% what perhaps be complete scale in linear mode resolution, 0.1% with 0.01%.

技术指标频率规模:100kHz~50GHz,取决于探头功率规模:-70~+44dBm(100pW~25W),取决于探头功率探头:与HP8480系列功率探头兼容动静规模:50dB,10dB步进显示单元:相对功率:W,dBm;相对功率:百分比,dB 分辨率:在对数模式可选择的分辨率0.1,0.01和0.001dB;或者在线性模式分辨率为全刻度的1%,0.1%和0.01%。

In order to improve the power quality of distribution network system, one of the most effective methods is reactive power compensation. In this paper, the Distribution Static Synchronous Compensator for reactive power compensation was studied, and then the digital controller based on One-cycle control was designed. The waveforms of experimental device based on DSTATCOM of one-cycle control were given in this paper. It can be seen from the results that the fluctuation of DC capacitor voltage is lower, the dynamic response speed of DSTATCOM providing or absorbing reactive power is fast, and the accuracy of steady-state compensation can achieve the requirements of reactive power compensation in engineering basically

为了提高配电网系统的电能质量,对无功功率进行精确补偿是非常有效的方法之一;本文研究了配电网静止同步补偿器用于无功补偿,并设计了单周控制的数字控制器;文中给出了基于单周控制的DSTATCOM无功补偿试验装置工作过程中的波形曲线,从试验结果可见,本文设计的单周控制DSTATCOM无功补偿装置的直流侧电容电压在工作过程中波动较小,装置发出或者吸收无功功率的动态响应速度较快,稳态补偿精度基本能够达到工程中无功补偿的要求。

a kind of design project of multifunction electric power quality gauged instrument based on virtual instrument is put forward in this article.this system integrates virtual instrument programming and power electronics together,to realize diverse signals of current electric power quality field allin one.the integrated signal generator unit which carries out the collection of high speed digital data,d/ a conversion and analog output in four channels,unsymmetrical synchro control fifo etc.by fpga are introduced,the flow of electric power system various signal which generates by vc programming is elaborated,and the structural design of signal amplification unit is analysed.the experiment text result shows that this gauged instrument has attained current advanced high grade of accuracy and it will accelerate the steps of electric power quality calibration because of its accuracy and versatility.

摘 要:提出一种基于虚拟仪器技术的多功能电能质量标定仪的设计方案,采用虚拟仪器编程技术和电力电子技术相结合实现集目前电能质量领域的多样信号于一体。介绍采用fpga实现高速数字量采集、d/a转换及4通道模拟量输出、非对称同步控制fifo等的集成信号发生单元,阐述利用vc编程实现的电力系统多样信号的产生流程,分析信号放大单元的结构设计。实验测试结果表明该标定仪达到目前先进的高精度等级,由于其准确性和多功能性将加快电能质量标定的步伐。

In the process of power relationship adjustment and deployment, the original administrative power order has been shattered, but yet the new order has not been completely established. Thus the administrative power system is disordered: public power is departmentalized, department power is individualized, personal rights are commercialized and the benefits of all power bodies are contradictive, which are the secondary factors against modernization in the process of administration.

在这一系列的权力关系的调整和配置过程中,原有的行政权力秩序被打破,但新的行政权力秩序并没有完全建立,因此形成了行政权力体系的失序,出现了公共权力部门化,部门权力商品化和各种权力主体的利益冲突等现象。

By the balance of communication link power, SNR balance guidelines and BER balance, under the base to meet the requirements of systems and not affecting thequality of call. Finally, the open-loop/closed-loop variable step length reverse power control is introduced, its principle is under the original open-loop power control to select suitable power control step by the new power control bit, and achieves a balanced system fastest and most effective.Keywords: Step, Power-control, Brethren interference, Proximity effect

依据通信链路的功率平衡准则、信噪比平衡准则和误码率平衡准则,在满足系统要求和不影响通话质量的基础上,最后提出了开环/闭环可变步长的反向功率控制,其原理是在原有的开环功率控制的基础上,依据新的功率控制比特,来选取合适的功率控制步长,以最快、最有效的方法使系统达到平衡。

Provinces and cities for many years the company has been appointed as "heavy contract, keep promise" enterprise,"AAA" credit enterprise and the "civilization of advanced unit" on behalf of projects in recent years has Baoqing Heilongjiang Power Plant cooling towers lining anti-corrosion plugging, Jiangsu Suqian power plant 100 m chimney slipform construction, Zhejiang Jiande chimney power plant 120 meters beacon preservative, Zhejiang Xiaoshan Power Company Limited, the main steel frame a new anti-corrosion, Shandong Rip Biochemical Co., Ltd.-owned power plant chimney 60 meters of new, Inner Mongolia Power Company Limited chimney brush color Central, Shaanxi society Cement Co., Ltd., limestone are color plates of the Treasury and the external walls of the installation of anti-corrosion and so on, as enterprises and institutions across the country to solve many difficult engineering construction of the anti-corrosion.

公司连续多年被省市命为&重合同、守信用&企业,& AAA&资信企业和&文明建设先进单位&近年来代表工程有黑龙江宝清热电厂冷却塔内壁防腐堵漏,江苏宿迁电厂100 米烟囱滑模施工,浙江建德热电厂 120 米烟囱航标防腐,浙江萧山新发电有限公司主体钢架防腐,山东瑞普生化有限公司自备电厂 60 米烟囱新建,内蒙古发电有限公司烟囱刷色环,陕西社会水泥有限公司,石灰石均化库彩钢板安装及外墙防腐等,为全国各企事业单位解决了不少高难度修建防腐工程。

Results With respect to the numbers and lower levels of the interferences within the driving source when FIT was powered respectively by the three power sources, the battery output 6 interferences, the highest power of which achieved -78.25 dBm; the linear power source output 6 interferences, the highest power of which achieved -67.11 dBm; the switching power source output 15 interferences, the highest power of which achieved -35.83 dBm.

结果:就3种电源分别供电下的激励源中的干扰的个数和功率水平而言,电池供电下的激励源中存在6个干扰,功率高达-78.25dBm;线性稳压电源供电下的激励源中存在6个干扰,功率高达-67.11dBm;开关稳压电源供电下的激励源中存在15个干扰,功率高达-35.83dBm。

With the development of power electronics, nonlinear loads are widely used in power system, which bring about serious harmonics pollution and big current of reactive power. In the same time, the load including high-tech and high precision is developing rapidly, which ask for high quality power. In the other hand, the power net is becoming bigger, the disturbers between different parts of the power net becoming more serious.

随着电力电子技术的发展,越来越多的非线性负载投入电网中,谐波和无功对电网的污染越来越严重,同时,高精密负荷的比重迅速增大,对整个电网电能质量要求越来越高;另一方面,电网的并网规模越来越大,电网各部分之间的干扰也不断加重,这些都严重的威胁着用户电能质量和电网的运行安全。

Mainly for power system automation, power electronics, power equipment, online monitoring and condition-based maintenance, smart appliances, such as professional orientation, and products are mainly including the pumping station integrated automation system, data pass business platform, power management systems, substation automation system, power generation plant electric automation system, power system equipment, the main-line monitoring and condition-based maintenance systems, distribution network automation system, such as near 10 species, widely used in electricity, water, petrochemical, metallurgy, railway and other industries, the product has achieved a modular, standardized, seriation, the main technology in the domestic and international advanced level of similar products.

主要面向电力系统自动化、电力电子、电力设备在线监测和状态检修、智能电器等专业方向,产品主要包括泵房综合自动化系统、数据通业务平台、电量管理系统、变电站自动化系统、发电厂厂用电自动化系统、电力系统主设备在线监测和状态检修系统、配网自动化系统等近十个品种,广泛应用于电力、水利、石油化工、冶金、铁路等行业,产品已实现了模块化、标准化、系列化,主要技术处于国内、国际同类产品的先进水平。

In order to reduce the production process mill system power supply system of the impact of power quality,improve the stability of equipment to meet national standards and power quality of the electricity sector of the target requirements,in the rolling mill factory production lines to install a set of 30kv side bus SVC.It restrained the molestations of power plants lines,make important roles of improve power quality,improve power factor,and level off the run level of electric web.

为了减轻轧机系统生产过程中非线性冲击负荷对供电系统电能质量的影响,提高设备运行的稳定性,满足国家标准和电力部门对电能质量指标的要求,在生产线30kV母线侧,装设了一套静止无功补偿装置,结果是把生产线对供电系统电能质量的干扰抑制到一个较低水平,对改善供电系统的电能质量,提高功率因数,稳定电网运行水平起到了极其重要的作用。

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推荐网络例句

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务,乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐,因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。

Closes the eye, the deep breathing, all no longer are the dreams as if......

关闭眼睛,深呼吸,一切不再是梦想,犹如。。。。。。