查询词典 magnetizing

The paper makes an improvement on the circuit model of transformer in calculation of electromagnetic transients. Two conditions are investigated: exclusion of transformer magnetizing branch and inclusion of hysteresis curve of transformer magnetizing branch.

本文在电磁暂态计算中完善了变压器的电路模型，分析了在不考虑变压器励磁支路和考虑励磁支路的情况下线路合闸过电压水平计算值的差异，研究了合空变励磁涌流，最后对得出的计算结果进行了分析。

Such equipment is the main magnetic power, can provide a one-way communication and half-wave rectifier power magnetizing current, accessories have contact, clamp, opening and closing, and closed-type magnetizing coil and flexible cables that can carry out contact method, clamp power law and the magnetic coil method.

这类仪器主体是磁化电源，可提供交流和单向半波整流电的磁化电流、附件有触头、夹钳、开合和闭合式磁化线圈及软电缆等，能进行触头法、夹钳通电法和线圈法磁化。

It is, again, helpful to use the magnetizing current As explained earlier, the magnetizing current imq can be approximated to be constant.

这是一次有益的利用激磁电流说过磁化电流过量可近似为常数。

When power transformer is in steady state,its magnetizing current is little,and usually the magnetizing current is not more than 3%~\Q% of rated current value.

变压器正常运行时的励磁电流很小，一般不超过额定电流的3％～10％。

Considering that the load current contains a little portion of the magnetizing current, this paper presents the approach of magnetizing current compensation.

考虑到负载电流中有小部分励磁电流分量，该文提出串联变压器励磁电流补偿(magnetizing current compensation，MCC)的方法。

Magnetizing current (i1) flows in the "magnetizing inductance" and causes core reset after primary switch turns off.

磁化电流(i1)流入"磁化电感"，使磁芯在初级开关断开后去磁。

The viscosity and heat conductivity of magnetized ammonia-water with magnetizing intensity of 0 to 0.14 [0.26] tesla and magnetizing time of 10 to 30 minutes are measured by the method of Engler viscosity measurement and transient double wire measurement.

分别采用恩氏粘度法和瞬态双热线法测量装置，对不同磁化强度和磁化时间的氨水粘度和导热系数进行了测量，氨水溶液浓度为25%，磁化强度范围0～0.26T，磁化时间10～30min。

According to the analysis of reasons of transformer mal-operation in Pingdingshan Electric Power Bureac for years , and according to the present situation of transformer protection studies and applications at home and abroad. This paper points out the shortcomings of discrimination between internal faults and magnetizing inrush, the problems existing in differentiating the slight faults of turn-to-turn in transformer are also advanced. On the base of the electromagnetic characteristics of transformer, the relations between fluxional differential current and voltage of source side analyzed, all the operating states of transformer simulated by EMTP/ATP, the criterion of magnetizing inrush in transformer is got. Through the wavelet analysis of current waveform, using the intense reaction of wavelet transform to the little change of signal, the internal faults of transformer are distinguished by testing local extremum.

本文根据平顶山市电业局历年来变压器保护误动的原因分析，并根据国内外变压器保护使用和研究的现状，指出了现有变压器保护在区分变压器励磁涌流和内部故障方面以及在判断变压器匝间轻微故障方面存在的问题和不足；从变压器电磁特性出发，分析了电源侧电压和电流微分之间的关系，利用电磁暂态仿真程序对变压器各种运行状态进行了仿真，并以此建立了判断变压器是否含有励磁涌流的判据；通过对电流波形的小波分析，利用小波变换对信号微小变化极强的反映能力，通过检测电流的局部极值点来区分变压器运行状态，并作为上述判据的补充。

Studied the magnetizing and not magnetizing role and influence of cultivating on desulphurization bacterium growth.

探讨了磁化与非磁化培育对脱硫菌生长的作用和影响。

The magnetic intensity of the applied magnetic force on a ferromagnetic material denoted by the term H measured in oersteds; b. The magnetic inducition or flux density as the flux per unit area normal to the direction of the flux ,denoted by B and measured in gauss; c. The magnetic permeability establishes the relation between magnetic induction and magnetizing force expressed as B/H =u; d.Residual magnetism or remanent magnetism which remains in the casting after the magnetizing force has been removed .

磁场强度的应用磁力就一铁磁材料标注由任期h来衡量， oersteds ；乙磁inducition或磁通密度为通量每单位面积正常的方向通量，标注由B和衡量在高斯；长该磁导建立的关系磁感应强度和磁化力表示的B /为H = u ； d.residual磁性或剩余磁性，这仍然是在铸造后，磁化部队已被删除。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。