母线

Saturation of Current Transformer is the major problem of Bus Protect in power system.

电力系统母线保护存在的主要问题，是电流互感器的饱和问题。

There are some problems about the secondary voltage switching between voltage transformers of double bus.

针对双母线电压互感器二次电压切换存在的问题，提出了电压软切换的新方法。

Each of the two medium-voltage buses is supplied from a separate auxiliary transformer secondary winding.

两条中压母线的每条由各自的厂用变压器副绕组供电。

Reliability model in series of motor driving system in vehicle was established.

直流母线支撑电容、大功率电子器件、控制电路、轴承和绝缘的失效是电动汽车电机驱动系统的主要失效模式。

The realization scheme of this project is also discussed in the paper, a data pick-up/control board using PCI bus protocol is designed, this board together with some softwares can finish many functions such as AD conversion of DC system generatrix and every DC spur track, sine wave generation which frequency is between 0-50Hz , and some control functions in fault analysis system.

本文还进行了故障检测装置实现方案的有关研究，设计了基于PC机的直流电网故障诊断系统，完成了基于计算机PCI总线的数据采集控制卡的设计，该卡配合计算机软件可以实现电网正负母线，各支路互感器输出等多路模拟量信号的采集，产生0-50Hz之间任意频率的低频信号源，并且能够完成故障检测中的各种控制功能。

Powerformer, launched in 1998, is a high voltage synchronous machine that is suitable for direct connection to the high voltage network without any step-up transformer.

Powerformer是一种高压发电机，可以直接和高压母线直接连接而无需升压变压器进行升压。

When the power system load in a small disturbance, the system itself to maintain the stability of the power transmission capacity, the use of automatic excitation regulator device may reduce the reactance of the generator, and then further to maintain the transformer high-voltage bus voltage constant, so compensation not only its own reactor, but also compensation for the step-up transformer reactance, thus greatly improving the power limits of generators, which greatly increased the static stability of power system.

当电力系统的负载发生微小的扰动时，系统本身保持稳定送电的能力，使用自动励磁调节装置，则可减小发电机的电抗，再进一步维持变压器高压母线的电压恒定，这样不仅完全补偿了自身的电抗，而且还补偿了升压变压器的电抗，这样就大大提高了发电机的极限功率，即大大地提高了电力系统的静态稳定。

Simulation results prove that so long as both busbar stray capacitance and sampling frequency satisfy a certain condition, the proposed scheme can judge the fault accurately under various fault conditions. The proposed scheme possesses good selectivity and strong ability of anti-transition resistance, besides, it is more sensitive to the fault occurred at the end of transmission line.

仿真试验表明，只要母线杂散电容和采样频率满足一定的条件，该方法在各种故障条件下均能准确判断故障，具有很好的选择性，并且有很强的抗过渡电阻能力，对末端短路故障的反应灵敏度更高。

Be based on electromagnetism transient to emulate program ATP-EMTP, it is with some 110kV transformer substation exemple build emulation computation model, the article analysed syntonic character of PT of generatrix of side of 35kV of this transformer substation to reach its to invoke an element.

梗概： 基于电磁暂态仿真程序ATP-EMTP，以某110kV变电站为例建立仿真计算模型，本文分析了该变电站35kV侧母线PT谐振特性及其激发因素。

It explains the reason of gentle breeze syntony about sustained tubate generatrix in hydromechanical viewpoint,and puts forworld several methods for avoid ing gentle syntony.

用流体力学的观点解释了管母线发生微风振动的原因，并提出了防止和消除微风振动的几种方法。

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。