电抗

For example, by the rules of IEC and Chinese national standard, when the variety of the short-circuit reactance of a homocentric winding exceeds 2%, a certain extent of deformation can be affirmed.

例如，IEC和我国国家标准规定，对于同心式绕组，如果短路电抗变化量超过2％，即认为绕组有明显的变形。

For electric power pulsive shipping, the voltage is not always normal, especially when the main motor is starting, and three-phase bridge commutated circuit is used widely, so, a new method to compute harmonic is developed, which is more accurate and practical, is more adapt to the ship condictions.

因此，本文在上述文献的基础上，对接入电压波形畸变的电网中的三相桥式整流电路进行了分析，采用了一种实用的新方法来计算三相桥式整流器所产生的谐波电流。本方法考虑了交流侧电抗及电网中存在的谐波电压，导出了交直流两侧谐波电流的计算公式。

On the basis of the analysis of the transient negative current, a compensated voltage can be generated with multiplying the rms value of the negative sequence transient current of the feeder by a settable compensated reactance, then combined with the magnitude of the zero-sequence voltage to consist of the compounded compensated voltage, which can be utilized to revise the characteristics of the inverse time-delay.

其基本保护采用零序过电压保护，动作时间采用反时限特性；在分析接地故障负序暂态电流分布特点的基础上，利用线路负序电流暂态有效值与一个可整定的补偿电抗相乘，形成补偿电压，并与零序电压幅值合成复合补偿电压，利用该电压对基本的反时限动作特性曲线进行修正，使零序过电压保护具有选择性。

The inverse time delay characteristic is adopted by the basic zero-sequence over-voltage protection. On the basis of the analysis of the transient negative current, a compensated voltage can be generated with multiplying the rms value of the negative sequence transient current of the feeder by a settable compensated reactance, then combined with the magnitude of the zero-sequence voltage to consist of the compounded compensated voltage, which can be utilized to revise the characteristics of the inverse time-delay.

其基本保护采用零序过电压保护，动作时间采用反时限特性；在分析接地故障负序暂态电流分布特点的基础上，利用线路负序电流暂态有效值与一个可整定的补偿电抗相乘，形成补偿电压，并与零序电压幅值合成复合补偿电压，利用该电压对基本的反时限动作特性曲线进行修正，使零序过电压保护具有选择性。

This paper presents an analysis through theoretical computation on the electrical parameters of three-core brindle insulation conductors, and through the methods of the design of conventional aerial lines and magnetic field theory. The reactance and susceptance of the new wire materials are 0.23 and 9 times as ouch as that of the conventional ones respectively.

应用电磁场理论和电力架空线路设计的理论，针对三芯绝缘导线束进行电气参数理论计算和分析，结果表明：与常规裸导线相比，其电抗和电纳分别为0.23倍和10倍。

Single-phase calculation method of commutated reactance is a traditional one.

换流变压器的换相电抗计算常采用单相测量法。

Taking the particularity of the connection scheme of novel converter transformer and its filter system into account, it's necessary to find out the relation between its commutated reactance and short-circuit impedances between windings and fundament frequency impedance of filter branch for impedance design of novel converter transformer and reactive power ...

考虑到新型换流变压器及其滤波系统的接线方案较为特殊，了解其换相电抗与绕组之间的短路阻抗及阀侧滤波支路的基频阻抗之间的关系，对新型换流变压器的阻抗设计和阀侧无功补偿度的优化配置是十分必要的。

Commutated reactance ; novel converter transformer ; impedance design ; reactive power compensation factor

换相电抗；新型换流变压器；阻抗设计；无功补偿度

When compensating devices are switched by vacuum switches, if they are switched on group, the inrush current can be controlled by inserting suitable current-restrained reactance in-series. Since the restriking overvoltage is pertinent to the capacity of compensating devices and the time of restriking and igniting, the overvoltage can be restrained by arresters with asterism connection at the entrance of the capacitors. Although switching capacitance devices will bring up high interception cross overvoltage, the metal-oxide arrester can limit this overvoltage in the system designed in the thesis, and naturally the compensating devices can operate normally.

使用真空开关投切并联无功补偿装置，在分组投入并联电容器时，串联合适的限流电抗，合闸涌流可以得到控制；重燃时的过电压值与并补装置补偿容量，重燃发生时刻和燃弧时间有关，电容器进线端的三星接法避雷器可以抑制其过电压；切并联电抗器时会产生较高的截流过电压，金属氧化物避雷器可以使本文中所建系统的截流过电压得到限制，并联无功补偿装置可以正常切合。

Through multi-pole design,"u=1" armature winding and broadening brush to minimize the commutator's effective length, such an arch commutator is feasible.

运行实践表明，电机的转速及换向器的设计质量和制造质量对电机的换向影响较大，在同一平均电抗电势

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。