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For this purpose, the minimum modulus eigenvalue of power flow Jacobian matrix of AC/DC power system is researched; by means of the sensitivity index of nodal voltage to reactive power variation and combining with participating factor, the bus or region where the voltage instability could happen most possibly are judged to provide decision-making foundation for the configuration of reactive power compensation device in power system.

该方法研究了交直流系统潮流方程雅可比矩阵的最小模特征值，以节点电压对无功功率变化的灵敏度为指标，结合参与因子，判断全电网中最有可能发生电压不稳定的节点或者区域，从而为系统无功功率补偿装置的配置提供决策依据。

In this paper, typical physical topology and its characteristics of low-voltage network are analyzed in detail, topology model of power line communication over low-voltage network is given for simulation, and the means based on Ant Colony Optimization is put forward, which is used to construct the power line communication networks without any available information of power line wiring in a building On the basis of these, the effect and anti-destruction means are analyzed and tested by emulating experiments.

该文详细地分析了典型低压配电网物理拓扑结构和特点，给出了低压配电网通信仿真拓扑模型，提出了一种适用于未知建筑物电力线拓扑结构条件下的蚁群电力线组网方法；在此基础上，通过仿真试验验证了该组网路由算法的有效性和抗毁性。

There are two loops in the control circuit which the feedback of the output voltage is the outer loop. In this loop there is a voltage error amplifier, a squarer, a divider and a multiplicator.

控制电路采用双闭环，外环输出电压反馈构成电压环，由电压误差放大器和一个平方器，一个除法器，及一个乘法器构成。

Ignoring the negligibly small voltage across R5, you can see that the reference voltage is VS×R4/(R3+R4) in volts.

忽视R5微乎其微的电压值，你可以看到参考电压为VS×R4/(R3+R4)。

It is possible that three-phase voltage is unbalanced and the neutral point displacement voltage is high.

运行中存在三相电压不平衡、中性点位移电压偏高的现象。

The automated voltage regulator of the generator gives voltage control from 0 right through to 130% of nominal rated value.

自动化电压调节器的电压控制发电机提供从0直至130 ％的名义额定值。

When the amplifier output is in either the positive or negative saturated state, the positive feedback network provides a voltage at the non-inverting input which is determined by the attenuation of the feedback loop and the saturation voltage of the amplifier.

不论放大器输出是正是负，只要OP达到输出饱和状态，OP正反馈路径就会在OP同相输入端加上一个电压，该电压的大小由OP正反馈路径的衰减和OP输出饱和时的电压共同决定。

The reason of unbalanced load voltage for station transformer in 220 kV substation was analyzed,the important influence of null line wirings in three-phase four-wire system on three-phase load voltage balancing was explained,and put forward a kind of simple,visual and practical vector analysis method.

分析一220kV变电站站用变压器负荷电压不平衡的原因，说明了三相四线制中的零线接线准确与否对负荷三相电压平衡性的重要影响，并提出了一种简单、直观的实用矢量图分析方法。

It is pointed out that not only the bridge voltage but also the supply voltage have influence on null point and sensitivity for pressure sensors.

分析了自平衡电桥激励的压力传感器的输出信号与桥电压、供电电压及流体压力之间的关系，并指出，不仅桥电压而且总激励电压都对零点和灵敏度有影响。

The preset voltage, welding voltage, welding current and wire feeding speed adopt numeric display, visual and precise.

预置电压、焊接电压、焊接电流和送丝速度分别采用数字显示，直观、精确。

You can do some assertiveness training.

你可以进行一些自信训练。

We were well on the path to making a rear-wheel-drive global platform," says Mays."

我们正致力于建立一个后轮驱动的平台，"Mays这样说道。"