电抗器匝间故障时,电容器与电抗器电压比将发生变化;
The voltage ratio of the capacitor and reactor will change when the fault occurs.
基于ATP的仿真和Matlab的运算表明基于电容器电感器电压比的电抗器匝间短路保护,能够对匝间故障做出快速而正确的判断。
ATP simulation and MATLAB calculation show that the voltage ratio protection against inter-turn fault of reactor can make correct judgement to this kind of fault quickly.
介绍了一种确定大型汽轮发电机转子匝间短路点位置的方法,该方法简单快捷、实用可靠。
The paper a applied method, which can determine the position of rotor rum short-circuit point for large turbo generator easily and reliably.
定子绕组做匝间耐压测试。
绕组中发热可能是由线圈匝间短路引起的。
Heating in the winding may be due to a short-circuit between the turns of the coils.
这样他便能够在铁芯上缠绕许多圈导线,而不会在线圈的匝间造成短路的危险。
He was able to wrap many turns of wire around an iron core without danger of circuits between the turns.
本文提出了一种基于直接冲击电压对电器绕组匝间绝缘的试验方法。
A test method for insulation between coils of electrical equipment based on directly impulse voltage are presented.
从法国进口的300MW发电机转子存在匝间短路和过电压保护问题。
Rotors of 300mw generators imported from France are afflicted by problems concerning short circuit between windings and overvoltage.
基于多回路数学模型,对异步电动机定子绕组匝间短路故障瞬变过程做了数字仿真,并完成了相关物理实验。
The transient numeric simulation and relevant experiments of stator winding inter-turn short circuit fault of asynchronous motor are conducted using multi-loop mathematic model.
基于小波变换的分析方法,提出了基于定子三相电流之间相位对称度检测的定子绕组匝间短路故障在线检测新方法。
Based on wavelet transform, a novel on-line detection method is presented, which is based on the detection of symmetry degree among the stator three-phase line currents phases.
是理想的干式电力变压器、电抗器及其它电机槽间、匝间、层间绝缘材料。
It is an ideal slot, interturn and interlayer insulating material of dry type power transformers, reactors and other motors.
在制造电抗器前,需要对电抗器的过电压耐受进行评估,保证匝间电压小于绝缘值。
Before manufacturing the CLI, the over-voltage withstand ability of CLI should be evaluated to ensure the voltage between two coils less than the withstand value.
分析了汽轮发电机发生转子绕组匝间短路故障时的电磁特性,提出了基于小波分析的故障检测与诊断方法。
Electromagneic characteristic of the interturn short circuit in turbo-generator rotor windings is analyzed. And a method of fault detection and diagnosis based on wavelet transform is presented.
定子绕组匝间短路是异步电动机常见故障之一,因此研究其检测方法具有重要意义。
It is of great significance to investigate and improve the detection method of stator winding inter-turn short circuit fault in induction motors.
该方法为同步发电机定子绕组匝间短路故障诊断提供了新的思路。
This method provides a new idea for the detection of the internal stator winding fault in synchronous generator.
分析了汽轮发电机转子绕组匝间短路故障和转子不平衡故障时定、转子径向振动特征。
The generator vibration characteristics caused by rotor winding interturn short circuit fault and imbalance fault are analyzed respectively.
基于交流阻抗和两极电压试验数据的分析,发现发电机转子绕组因存在铜渣而造成匝间短路故障的原因。
Based on the analysis of AC impedance and two poles voltage test data, the reason of turn - to - turn short circuit fault caused by having copper dregs in generator rotor winding was found.
认为突发性振动原因是运行中转子的油膜涡动和匝间短路、线圈膨胀受阻等引起的热不平衡。
It is concluded that the causes of sudden vibration are oil film whirl and thermal unbalance of generator rotor resulting from interturn short-circuit and hindered winding expansion etc.
应用领域:适用于电机、变压器槽绝缘、匝间绝缘和衬垫绝缘。
Application: It is widely used in slot, phase and liner insulating of motor, transformer and so on.
介绍了一种适合EMTP仿真程序的变压器模型,该模型能模拟变压器各种匝间短路和绕组对地短路;
A transformer model compatible with the Electromagnetic Transients Program (EMTP) is presented, which can be used to simulate the turn to turn fault as well as also turn to ground fault.
在具有高速浮点运算能力的DSP芯片上进行高效率编程,生成转子匝间短路在线监测系统。
The integrated efficient diagnosis program at high-speed floating point DSP chip is made to produce a set of on-line inter-turn short circuit monitor system.
分析了电抗器保护匝间短路灵敏度,提出了自适应补偿零序功率方向的方法。
Moreover, the sensitivity of turn-to-turn fault of shunt reactor protection was analyzed and a method of adaptive compensated zero sequence direction was presented.
介绍了一种由冲击电压发生器和峰值电压表组成的用于电机磁极线圈匝间绝缘试验的设备,详细说明了设备的工作原理及关键技术,给出了试验结果。
The paper introduces a type of the turn-to-turn insulation test equipment including an impulse-voltage generator and a peak voltmeter for the electrical machine pole coil.
随后介绍采用基于有源电阻电桥进行转子接地短路故障监测与采用微分探测法进行转子匝间短路故障信号。
Then it introduces the rotor earth fault monitoring based on the method of resistance bridge with source, and the interturn short circuit fault monitoring in generator rotor based on stator coil.
提出了基于负序功率方向的并联电抗器匝间故障保护原理。
The paper proposes a novel shunt reactors turn-to-turn fault protection that is based on negative-sequence power direction theory.
在场的计算中,讨论了定子股线绝缘和转子匝间绝缘对电磁场及温度场的影响。
Calculating results with and without the consideration of insulation is compared and the effect of insulation to the air gap magnetic field and rotor temperature field is analyzed.
以匝间短路为例,给出了系数变化矩阵。
As an example, the coefficient matrix of the turn-to-turn fault is given.
目前变压器相间后备保护对变压器匝间故障的灵敏度不高。
The transformer backup protection for phase- to- phase faults is not sensitive to the few turn turn- to- turn faults of transformer.
损坏情况大体分为两种:一种是定子屏蔽套良好,而定子绕组发生对地、相间击穿,线圈匝间短路,过载而造成绕组烧毁。
Damage be divided into two: one is a good set of stator shielding, and the occurrence of stator windings, the breakdown phase, the coil turn-to-turn short circuit, overload caused by burnt windings.
损坏情况大体分为两种:一种是定子屏蔽套良好,而定子绕组发生对地、相间击穿,线圈匝间短路,过载而造成绕组烧毁。
Damage be divided into two: one is a good set of stator shielding, and the occurrence of stator windings, the breakdown phase, the coil turn-to-turn short circuit, overload caused by burnt windings.
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