我国配电网一般采用中性点不直接接地方式。
The neutral of system is generally indirectly grounded in power distribution network in China.
直接接地的优点是。
禁止任一变压器中性点或发电机始点处直接接地。
No direct connection from either transformer neutral points or generator star points to earth is permitted.
直接接地或通过其他方式等效接地以防止遭受电击。
Continuous earthing or other suitable means should be provided for the prevention of electrical shock.
并通过对比，找出井下变压器中性点不允许直接接地的原因。
Through contrast analysis, finds the reason of not allowed direct ground connection for transformer under the shaft.
介绍变压器中性点直接接地和不接地系统中人身触电电流的计算方法。
This paper introduces the calculating method of person shocking current in the sysytem of power supply of neutral dot directground connection and not ground connection.
由于锤脚始终直接接地，避免和冲击下落所产生的潜在危险和碎片飞溅。
Since the tamping foot remains on the ground during the compacting process, there is no risk of flying debris and no danger from a falling weight as with conventional dynamic compaction.
特点：广角设计，覆盖的范围广，结构的设计，提升振动和抗冲击性，直接接地。
Characteristic: wide Angle design. cover a wider range of area. Structure design, enhancement of vibration and impact resistance. Directly grounded.
对于中性点不直接接地的发电机，由于三相对地电容值存在差异，中性点与地之间存在一定电压。
Due to three-phase capacitance to ground, certain voltage exists between the neutral and the ground for a generator with ungrounded neutral.
在中性点非直接接地电网中，单相接地及由电压互感器(PT)引起的谐振过电压均是多发性的事故。
In ungrounded distribution system the single-phase-grounding and the ferro-resonance caused by the PT (Potential Transformer) are of the frequent accidents.
由于只用到暂态零序电流量，该选线判据不受PT异常情况的影响，可以适用于任意方式的不直接接地系统。
For that the transient zero sequence currents are used only, the criterion is immune to the abnormity of the PT, and it can be applied to all kinds of the neutral indirectly grounded systems.
中性点不接地系统和中性点经消弧线圈接地系统统称为中性点不直接接地系统，广泛应用于铁路配电系统中。
Non-ground neutral system and arc-suppression-coil-ground neutral system are called non-direct ground neutral system that is widely used in power distribution system.
相对于中性点非直接接地系统而言，发生在中性点直接接地系统中的铁磁谐振过电压有着许多新的特点，而且对它的研究相对较少。
Compared with neutral ungrounded power system, ferroresonance overvoltage occurred in neutral grounded power system has more new features, and the research about it is much.
相对于中性点非直接接地系统而言，发生在中性点直接接地系统中的铁磁谐振过电压有着许多新的特点，而且对它的研究相对较少。
Compared with neutral ungrounded power system, ferroresonance overvoltage occurred in neutral grounded power system has more new features, and the research about it is much.
应用推荐