中性点

By analyzing, the fault transient component of third harmonic voltage at neutral is approximately equal to that at terminal. Choosing their sum and difference as the action and restrai nt signal respectively, the protection detects the ground fault by comparing the spectrum energy of action and restraint signals.

该保护方案根据单相接地故障后机端和中性点 3次谐波电压的故障暂态分量近似相同的特点，把两个故障分量的相量和与相量差分别作为保护动作信号及制动信号，通过比较数据窗内相应信号的谱能量检测定子单相接地故障。

But there is a problem of related voltage change for an autotransformer.

而自耦变压器中性点调压则会带来相关调压问题。

Application of autotransformer neutral grounding by small reactance in 500 kV power system.

朱天游。500 kV自耦变压器中性点经小电抗接地方式在电力系统中的应用。

The traditional BLDCM mathematical model establishment in the electric motor two-phase breakover foundations, in fact the neutral point is hanging, inevitable existence three-phase breakover at the same time.

传统的直流无刷电机数学模型建立在电动机两两导通的基础上，而实际上由于电动机中性点悬空，不可避免存在三相同时导通的情况。

A system in which one or more neutral points are connected to earth through reactance which approximately compensate the capacitive component of a single-phase-to-earth fault current.

一个或多个中性点通过具有感抗的器件接地系统。这些器件在单相对短路时能大体上补偿线路的容性效应。

The capacitive grounding current is one of the most important parameters of ungrounded neutral system.

中性点绝缘系统的接地电容电流，是电力系统的重要参数之一。

Simulation results show the surface potential closed to sea drops to zero influenced by sea. The lower potential of substation makes more DC currents of power grid flow through transformer neutrals and causes DC bias of transformers.

靠近海洋层的地表电位受到海洋的影响将下降至接近零电位，导致更多的直流电流从靠近海洋的变压器中性点流出，影响了变压器的正常运行。

Small current earth at neutral point is popular in power distribution networks.

中性点采用小电流接地是配电网的一种主要接地方式。

This paper describes the importance of neutral point connection in the secondary circuit of voltage transformer reflected in relay ant-accident measures.It gives the test methods in detail to.The solution is also given.

本文详细描述了判断电压互感器中性点电压异常的试验过程和方法，提出了电压互感器二次回路中性点未接地的解决办法。

With analysis on the control model, an improved automatic tuning method for arc-suppression coil is proposed, that is: adopting voltage feed forward control to restrain interfere of 50Hz displacement voltage, which can improve the characteristic of the injected signal significantly, make the injected signal without reference to unbalanced network and neutral displaced system. Another innovation is detecting the magnitude of neutral point signal-frequency voltage to judge the resonant state, which improves the sensitivity and accuracy of resonant judgement effectively.

基于对控制模型的分析，提出了一种新的注入变频信号的消弧线圈自动调谐方法：通过电压前馈校正控制的引入，有效抑制了50Hz工频电压对注入信号的干扰，使得注入信号不受电网不对称及中性点位移电压的影响；提出以中性点注入信号电压幅值最大做为新的谐振判据，有效提高了谐振状态判断的灵敏度和准确度。

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。。。。