查询词典 power component

Deepen as what power system reforms, the position of market main body of power plant gradually Anacreontic, the principle of market economy, regulation is changing the content of tradition management item and range, become its organic component.

随着电力体制改革的深化，发电厂的市场主体地位逐渐明朗，市场经济的原则、规则正在改变传统管理事项的内容和范围，并成为其有机的组成部分。

Then, the sequence voltages of the slack bus is replaced, and finding the positive sequence power flow several times until convergence comes off. Compared with the three-phase Newton-Raphson method, the Jacobian matrix with the proposed algorithm is of much lower order. The computation of finding the negative sequence component from the coupling power is only division arithmetic.

本文算法中修正方程式的雅可比矩阵阶数同单相潮流算法相同，是传统三相潮流算法的1/3，而通过耦合功率求解负序分量的计算，仅仅是简单的除法运算，计算量远远小于高阶矩阵的处理，因而总体上，与传统方法相比，大大降低了计算量。

Especially, the inductive load and impactive load of electrical equipments bring much Var and harmoniousness to the power system. They lead to low power factor, vast harmonious component and lead to other electrical equipment deviant work.

特别是用电设备中的感性负荷和冲击负荷给电网带来了大量的无功和谐波，造成电网功率因数降低，谐波成分增大，引起本身和其它用电设备不能正常高效的工作，为此，补偿电网的无功和谐波就成为人们及其关注的课题。

Part One Research on Measuring of Resistive Current Passing Through XLPE Cable With Applying AC Voltage: By many tests,It is found that mains frequency is not sensitive to the mechanical fault of power cable main insulation.Accordingly,a new method that the fault of power cable main insulation is measured by measuring the resistance component of leakage current is put forward.

第一部分对XLPE 电力电缆施加工频交流电压时阻性电流的检测研究：通过大量的试验发现工频交流耐压试验对电力电缆主绝缘的机械损伤不灵敏，从而提出了通过检测泄漏电流的阻性分量来检测电力电缆主绝缘缺陷的新方法。

"Electric power Electronic technology" is the electrical engineering and the automated specialized important specialized fundamental course, this curriculum has the circuit diagram and the oscillogram are many, the switch component trades the class process to be abstract and the information content major characteristic, the traditional blackboard teaching way both time-consuming and is not convenient, therefore designs "Electric power Electronic technology" the CAI courseware has certain practical significance.

电力电子技术》是电气工程及其自动化专业一门重要的专业基础课，该课程具有电路图和波形图多、开关器件换流过程抽象及信息量大的特点，传统的黑板教学方式既费时又不方便，因此设计《电力电子技术》的CAI课件有一定的现实意义。

In a linera circuit,the reactive power is defined as the ac component of the instantaneous power,with a frequency equal to 100/120 Hz in a 50 or 60 Hz system.

在一个 linera 线路，那反动的力量是定义当做即时力量的 ac 成份，与频率相等的至一个第 50 或第 60 赫兹系统的 100/120个赫兹。

With Matlab simulation software, a research on simulation of harmonic detection means based on instantaneous reactive power theory is carried out, and a detailed analyse of the simulation result is presented. The result indicates: the harmonic detection means based on instantaneous reactive power theory can detect harmonic and reactive component in three-phase current precisely and re...

利用Matlab仿真软件，对基于瞬时无功功率理论谐波检测方法进行了仿真研究，并对仿真结果进行了较为详细地分析，仿真结果表明：基于瞬时无功功率理论谐波检测方法可以准确、实时地检测出三相电流中的谐波电流及无功电流，可为抑制谐波和无功补偿提供可靠的谐波及无功电流分量。

The result indicates that the harmonic detection means based on instantaneous reactive power theory can detect harmonic and reactive component in three-phase current precisely and real-time, to supply reliable harmonic and reactive current for harmonic restraint and reactive power compensation.

仿真结果表明：基于瞬时无功功率理论谐波检测方法可以准确、实时地检测出三相电流中的谐波电流及无功电流，可为抑制谐波和无功补偿提供可靠的谐波及无功电流分量。

So, When the power system is in transient, the sliding mode control rule is chose directly to make transient component decrease quickly, and when the power system is in stability, the direct current control method based on voltage space vector method is imported to make the error current reduce to zero by inches and avoid surge.

为此，当系统处于暂态时，论文直接选择滑模控制率使暂态分量迅速减小，当系统处于稳态时，引入基于电压空间矢量的直接电流控制方法，使误差电流趋于0缓慢变化，在有效补偿系统无功的同时，提高了系统的动态特性，并大大降低了系统振荡的可能性。

By means of analyzing the difference between HVDC transmission line and traditional HVAC transmission lines, it is proved that it is not suitable to apply superposition principle to the power grid containing HVDC transmission lines, thus following conclusions are obtained: in the place near to HVDC transmission line the fundamental frequency fault component element should be not adopted; and there is definite relation between the maloperation of directional comparison pilot protection applied in practical project and the adoption of fundamental frequency fault component element.

通过分析HVDC的特性与传统交流系统的不同，证明叠加原理不能应用在含有HVDC的系统中，从而得出结论：在HVDC附近不应该采用工频故障分量元件，实际工程中的纵联方向保护误动作与使用工频故障分量元件有一定关系。

Singer Leona Lewis and former Led Zeppelin guitarist Jimmy Page emerged as the bus transformed into a grass-covered carnival float, and the pair combined for a rendition of "Whole Lotta Love".

歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车，和一双合并为一移交&整个lotta爱&。

This is Kate, and that's Erin.

这是凯特，那个是爱朗。