对中性点接地变压器的影响因素包括多个,其中最主要的是地电位升。
There are several factors affecting neutral grounded transformers, among then, ground potential rise is most important.
介绍了树脂绝缘干式接地变压器的工作原理、设计要点及空载电压比的计算方法。
The principle, main design point and no load voltage ratio calculation method of resin insulation dry-type grounding transformer are introduced.
本文主要对目前大电流中性点接地变压器中性点保护普遍采用的保护方式进行了探讨;
In this paper, the current-current neutral grounding transformer neutral point commonly used to protect the way of protection was discussed;
通过接地变压器结构型式、容量和阻抗电压的分析研究,得出正确选择接地变压器的方法。
Based on the analysis of the structural type, capacitance and impedance voltage of grounding transformer, a proper method of choosing grounding transformer is proposed in this paper.
分析了直流接地极电流对中性点接地变压器的影响,介绍了减小流入该变压器绕组直流电流的措施。
The effect of DC earthed pol current on the neutral earthed transformer is analysed. The methods of reducing THD DC current which flows into transformer windings are introduced.
分析了接地变压器的基本原理,介绍了一种比较合理的接地变压器容量计算方法,并给出了计算实例。
The basic principle of earthing transformer is analysed. A proper capacity calculation method for earthing transformer is introduced. The calculation example is given too.
这就是松鼠能够在电线上奔跑的原因,但当它的蹄子与电线端部的杆子上的接地变压器接触时,会可怜地被打死。
That's why a squirrel can run across an electrical line, but sadly die when its foot makes contact with the (grounded) transformer on the pole at wire's end.
介绍了三相五柱式消弧线圈及其自动跟踪补偿原理,该消弧线圈在结构上突破了传统消弧线圈的模式,将传统的接地变压器和消弧线圈有机地结合成一个整体。
The arc suppression coil with three phases and five columns can achieve automatic trace and compensation for ground fault capacitive current of power system by the method of rectifying i.
灯具泄漏电流测试线路中隔离测试变压器次级接地问题直接影响着测试结果的准确性。
The earthing of secondary circuit of an isolating test transformer on the circuit for luminaire leakage current test strongly influences the accuracy of test results.
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.
文章介绍变压器铁芯多点接地故障的诊断和处理方法。
The characteristics of transformer core multiple grounding fault are analysed, the diagnosis and treatment methods are introduced.
数字式变压器差动保护在星形侧发生外部单相接地或线路单相遭雷击的情况下,差动保护有时会误动。
Digital transformer differential protection may falsely take effective when external single-phase earth fault occurs at star side or the line endures lightning strike on single phase.
为对变压器铁心发生的多点接地故障进行准确定位提出了高频法和行波法两种检测方法,并对它们进行了较为详细的分析和比较。
To solve the problem of locating the multipoint earthing of the transformer core, two novel methods, named as high-frequency method and travelling-wave method, are analyzed and compared in detail.
试验结果表明:大型发电机一变压器组的定子的任何一点上发生接地故障时都能成功地获得保护。
The test results show that the ground fault at any point of the stator of a large unit-type generator-transformer system can be successfully protected.
手车有断路器手车、电压互感器手车、电压互感器避雷器手车、所有变压器手车、隔离手车及接地手车七种。
There are circuit breaker handcart, voltage transformer handcart, voltage transformer arrester handcart, all transformers handcart, isolation and earthing trolley hand trolley.
变压器中性点的接地方式会影响到变压器被保护的程度以及变压器所需的绝缘量。
The method of grounding the neutrals of the transformers affects the degree of protection that can be given them and the amount of insulation they need.
论述变压器绝缘试验中温度、升压速度、极性、铁心是否接地对绝缘试验结果的影响,并分析产生这些影响的原因。
The multi-point grounding fault of power transformer's iron-core accounts for a large proportion of all the common faults in the transformers.
通过分析变压器传统纵差保护在反映接地故障时灵敏度上的不足,论述了装设零序差动保护的必要性。
It is necessary to install zero-sequence differential protection because conventional differential protection is not sensitive enough to grounded fault.
本文主要介绍了变压器铁心接地故障产生的原因,以及故障的主要特征和危害。
Some features and dangers of earth fauh for iron core of transformer are analysed.
因此测试区域应包括变压器中性点和避雷器接地引线以及易腐蚀区域。
So the measured region should include the ground leads of transformer and arrester.
该导纳矩阵包含了变压器各绕组的联结方式、变压器的电气参数及变压器中性点的接地方式等信息。
The admittance matrix includes the information about the winding connection of the transformer, the electrical quantities of the transformer, and how the start points are connected.
介绍变压器铁芯和夹件接地回路及变压器铁心多点接地检测装置。
The device to check if there are multi-grounding locations in transformer core and to check the grounding circuit of core and clamping pieces are introduced.
研究结果显示,主变压器的中性点接地与否及电缆遮蔽导体与互連导体对整体的接地系统故障特性有关键性的影响。
The study results reveal shown that the ground fault current will increase with the number of main transformer with neutral to be solidly grounded.
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.
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.
阐述了变压器中性点接地方式中的消弧线圈接地方式的工作原理和使用特点,为供电系统的安全运行提供了保障。
Working principle and application features of anti-arc coil in transformer neutral-point earthing mode are introduced, which provides safety running for electricity supply system.
阐述了变压器中性点接地方式中的消弧线圈接地方式的工作原理和使用特点,为供电系统的安全运行提供了保障。
Working principle and application features of anti-arc coil in transformer neutral-point earthing mode are introduced, which provides safety running for electricity supply system.
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