母线

The choice of the transformer includes: Main transformer use the main technique in number, capacity, model number...etc. in set data of the transformer to really settle; The electricity lord connected the line to introduce primarily the electricity lord connects the linear importance, design according to, the basic request, every kind of merit and shortcoming and lords that connect the line form connects the linear choosing more, the lord that combine to establish the in keeping with my plant the request connects the line; The short-circuit galvanometer is regarded as the most important link, this thesis introduced the calculating purpose in short-circuit electric current, assumption term, general provision, the calculation, network transformation of a parameter detailed, and each calculation etc. knowledge that short circuit order; The choice of the high pressure electricity equipments includes the mother line, high pressure breaks the road machine and insulate the switch, electric current to feels with each other the machine, electric voltage feels with each other the choice principle of the machine, high pressure switch cabinet with request, and proceed to these equipments the school check with the related introduction in product.

变压器的选择包括：主变压器的台数、容量、型号等主要技术数据的确定；电气主接线主要介绍了电气主接线的重要性、设计依据、基本要求、各种接线形式的优缺点以及主接线的比较选择，并制定了适合要求的主接线；短路电流计算是最重要的环节，本论文详细的介绍了短路电流计算的目的、假定条件、一般规定、元件参数的计算、网络变换、以及各短路点的计算等知识；高压电气设备的选择包括母线、高压断路器、隔离开关、电流互感器、电压互感器的选择原则和要求，并对这些设备进行校验和产品相关介绍。

Transient Stability is an important problem in power systems.

摘要在系统中暂态稳定性是一个重要的问题。，母线负荷对暂态稳定的影响是运行操作员主要关注问题之一。

Roller outer surface of the bus is basically a straight line, and with the roller axis line intersecting, usually truncated cone.

滚子外表面的母线基本上是直线，并与滚子轴心线相交，一般为截圆锥体。

The principle of partial discharge detection of gas insulation switchgear with ultra high frequency is discussed.A 220 kV GIS bus bar cavity is adopted as a test object to design and simulate four typical defect models in GIS.The PD signals produced by the four models are obtained via the PD detection system,which is developed by the authors on the basis of the narrow band UHF method.

为了提高GIS运行的可靠性，笔者简要说明了超高频法检测GIS局部放电的原理，并在实验室以一段220 kV电压等级的GIS母线为试验对象，设计和模拟了GIS中典型的4种局部放电模型，并使用自主研发的超高频窄带检测系统对其局部放电信号进行检测。

The results show that the high frequency resonant phenomena provide an effective means for detecting the partial discharge in GIS with the ultra-high frequency method.

结果表明，高频电磁波在GIS母线中的谐振现象为超高频法检测GIS中局部放电提供了有利条件，同时，可利用电磁波的传播时间对局放源进行准确定位。

The paper introduces an underfeed winder control system mainly composed of Siemens S7-400 PLC, TP270 hand touch screen, 6SE70 AC converter. It successfully implements all AC drive control for the underfeed winder.

摘 要：介绍了由西门子S7-400 PLC、TP270触摸屏、6SE70变频器组成的下引纸复卷机的控制系统，通过公共直流母线系统和基于PROFIBUS-DP总线的分级控制的应用，实现了下引纸复卷机的全交流传动控制。

The scheme makes the DC side of unisolated single PWM rectifier as 350V DC lines. Charger and discharger modules connect to the DC lines. Use this method to charging and discharging single Li-ion battery.

方案将不隔离单相PWM整流器直流侧设计为350V直流母线，通过它与充电模块、放电模块的连接，实现对单体锂离子电池的充放电。

These results indicate that the proposed control scheme can realize good trace performance of input current, is closer to unit power factor, and stabilize the output DC bus voltage.

实验结果表明：采用本文控制方案，系统实现了较好的输入电流跟踪性能，输入功率因数接近1；变流器输出直流母线电压稳定可靠。

This paper analyses the effect of field of bus in substation and the high voltage conductors between the transformer and the capacitive voltage divider on the divider ratio.

本文分析了变电站母线电场和试验变压器与电容分压器的高压联接导线电场对电容分压器分压比的影响，提出电容分压器的等效电路。

It has been proved, that the attenuation value of bridge circuit is not equal to the sum of two terminal attenuation, and it concerned with impedance of wave trap, substation bus impedance, and phase-angle of...

分析和计算表明，桥路衰减的数值不能简单地看作两个终端衰减之和，而与阻波器阻抗、线路阻抗、变电站母线阻抗和邻相同频寄生信号的相位角等参数有关。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。