中性点

After the tripped phase current from shunt reactor was calculated using the transient fault model as the prototype whether transient or permanent fault, the difference between the calculated current and the measured one of the fault phase from shunt reactor was employed to identify permanent fault. When the single-phase fault is transient, the calculated current is close to the actual measured current.

该方法以瞬时性故障为参考模型，求取并联电抗器故障相电流，采用该求取电流与并联电抗器故障相实际测量电流之差同中性点小电抗器电流幅值比来实现永久性故障的判别。

The designation of any conductors, terminal or any element connected to the neutral point of a polyphase system.

电气上与多相系统中性点连接的任一导体、端子或元件的总称。

New in this thesis, the magnetic field and reactance of shell-type air-core reactor and neutral grounding reactor are calculated by using the finite element method.

在分析中性点接地电抗器结构特点的基础上，通过对实际物理模型的合理简化，建立了二维轴对称有限元计算场域模型。

Two kinds of generator neutral grounding system are analyzed in-depth, namely through high resistance grounded and extinguishing coil grounded, that are mainly adopted currently.

本文深入分析了目前主要采用的发电机中性点经高阻接地和消弧线圈接地两种方式。

For the selection of onshore large and middle generator neutral grounding, there aretwo grounding ways: Peterson coil and high resistance.

在现有陆地大中型发电机中性点接地选择上，主要有消弧线圈接地方式和接地变高阻接地方式。

Distribution system ; neutral grounding ; arc suppression coil grounding ; resistance grounding

配电系统；中性点；接地方式；消弧圈接地；电阻接地

The paper consists of dynamic equivalent of province S network, simulation analysis by simulation software EMTDC, comparison between the simulation result and the graph of fault recorder, applying rotating vector method and resonance theory to analysis fault process, finally having arrived at the fault mechanism of wire-break resonance and asynchronous-ly switching process.

内容包括：对S省电网的动态等值，用仿真软件EMTDC进行仿真分析，将仿真结果和故障录波图做比较，用旋转向量的方法和谐振理论分析事故过程，从而得出了机电相互作用引起变压器中性点击穿和断线谐振导致避雷器爆炸的事故机理。

He armature winding of TFW2 series generators is connection in star with neutral-point, three phase four wire system.

FW2系列发电机的电枢绕组为带有中性点的星形接法，三相四线制。

On the basis of the conventional design means of DC side filtering equipments in HVDC transmission system, multi-object programming optimizing method with two objects: investment and operation fare and the constrain condition of equivalent interfering current limit is presented to get a generally optimum scheme for DC side filtering equipments including smoothing reactor, filters and capacitor at neutral bus in this paper.

本文基于高压直流输电系统直流侧滤波装置传统的设计方法，提出了以投资费用和年运行费用为目标、等效干扰电流满足标准要求为约束条件的多目标规划设计方法，对高压直流输电系统直流滤波装置(包括平波电抗器、直流滤波器、中性点冲击电容器)进行综合优化设计。

The generators are of three-phase four-wire type,making use of star connection with neutral point.The rated line voltage is 400V.phase voltage 230V.frequency 50Hz,power factor 0.8.It can provide 60Hz and the other voltage's generator according to necessary.

本发电机为三相四线制，采用带有中性点的星接法，额定电压为400伏，相电压为230伏，频率50赫，功率因素0.8根据用户需要，也可提供60赫及其它电压值的发电机。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。