查询词典 power

In the HVDC engineering, it will produce a series of harmonic which than the fundamental frequency of power grid, and the harmonic have adverse effects with the power systems, equipment and power grids.

中文摘要：摘要：在高压直流输电工程中会产生一系列大于电网基波频率的谐波，而谐波的存在会对电力系统、设备及电网造成不良影响。

Aluminum foil in polychromatic overprinter photoelectricity scanner tracking color standard position correction and manipulation of order: first switched on automatically overprinter the total power switch device, open the channel computer power supply and track scan power, photoelectricity scanning head alignment reflector and adjust the distance from far and wide, so that the reflector to be rendered on the minimum light point, at which point the detection distance of about equal to the focal length of the photoelectricity scanning head.

铝箔众色套印洋差平电扫描器跟踪色不本场所订侧和操纵挨次为：不后不切断被迫套印安装的总电源开关，开放各通道计算机的把持电源和跟踪扫描电源，不兵平电扫描脚差准不直射不活，调度远近间隔，使不直射不活上表现的平不面最小，此时的检测间隔约即是平电扫描脚的焦距。

If reject heat is employed as useful heat, for industrial processes or district heating, the power plant is referred to as a cogeneration power plant or CHP (combined heat-and-power) plant.

如果释放的热量作为有用的热能，工业处理或区域供暖，这样的电厂被称为综合热电厂，或者成为CHP工厂。

To power grid parameter and topology error which are two main factors for the compute result of power system analysis software , research and develop the parameter identification and topology error identification system of power grid.

针对电网参数和网络拓扑影响电力系统高级应用软件计算结果的两个主要因素，以开关有功潮流估计算法和多断面参数辨识算法为核心，研究开发了电网参数辨识与实时拓扑检错系统，并在福州电网得到了应用。

For the ill conditioned load flow caused by the error produced in the transformation from electricity quantities to average power, direct current load flow and sensitivity vector are presented to find out the ill node, then by adjusting the load curve and generation curve in a certain principle, which is shown in detail with several flow charts, a new operation mode is reestablished to ensure the convergence of the calculation. Optimal multiplier method is proposed to work out the least square solution according to ill conditioned structural power network. The electricity quantities flow method enhances the reliability and accuracy of the calculation of the power transmission losses.

该方法可根据当前输电网中各个变电站24小时的电量记录，利用电量潮流计算对输电网总线损和各条线路损耗进行计算，使计算的精度满足降损措施分析和指标考核的要求；并且对于由负荷出力曲线转化成平均功率计算潮流时引入的误差，进而导致潮流计算不收敛的情况，采用直流潮流法，依据相角对有功功率的灵敏度向量判断出"网络异常点"，并且给出了解决此种情况的方法流程图；针对结构病态的电力系统潮流计算不收敛的情况，运用非线性约束优化方法中的最优乘子法求解潮流方程的最小二乘解，从而解决了电量潮流法计算理论线损时的收敛性问题，增强了该方法的适用性。

ABSTRACT With the development of modern industry, more and more production processes and assemblies (like semiconductor manufacturing, computer integrated manufacturing system and paper making, etc) rely on those equipments whose kernels are CPU chips or power electronics devices. Moreover, owing to rapid use of large numbers of nonlinear or impactive loads and various faults in power system, many power quality problems will be caused, such voltage as sag, swell, unsymmetry, flicker, fluctuation, harmonics and so on.

随着科学技术及社会文明的不断进步和发展，尤其是以信息技术为先导的知识经济时代的到来，越来越多的自动化生产设备以对电能质量十分敏感的计算机或微处理机等为核心，这就对电能质量提出了更高的要求。

This paper expounds the causes of market power, indices of market power and mitigation of market power.

然后重点研究了不同市场模式和结算方式下市场力的影响。

We are a professional factory to produce Inverter Transformer、Power Factor Corrector、electronic power transformer、audio frequency transformer、 switching power transformer and inductance coil , main products are exported to America, Japan and Taiwan mostly.

本公司是生产各种贴片变压器、功率因素校正器、电子电源变压器和音频变压器的专业厂家，产品大部份与国内名牌整机厂家配套、出口美国、日本和台湾等地。

A series of researches have been developed on cathode design, process control and machining gap control etc. Several results that are valuable to applications and instructively significant have been gained.PECM is a new technology that the pulse power, especially the high frequency and short pulse current power, is applied and the traditional direct current power is replaced instead.

脉冲电化学加工是用脉冲电源代替传统的直流电源，尤其是高频、窄脉冲电流的引入，使脉冲电化学加工中间隙过程的电化学特性、流场特性和阳极溶解特性等都得到了很大的改善，其加工精度、表面质量和加工效率都有了很大的提高。

With the rapid development of power system and the interconnections of some power systems, stabilization monitoring and control of power system get more and more important.

随着我国电力系统发展和大区电网互联，电网的安全稳定控制越来越重要。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。