电压

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。

It produces a voltage, which has equal amplitude and opposite di rection against the distortion voltage contained in power system with PWM invert er, and then it is injected to network through transformer by lower-pass filter.

它利用PWM逆变器产生与电网畸变电压大小相等、方向相反的脉宽调制波，经低通滤波器滤除开关纹波后通过变压器串联在电网中，以达到稳定负载端电压、改善电能质量的目的。

Yet, reignition overvoltage might do harm to transformer coils by cumulative effects for its surge steepness. The measures lies in setting parallel connection capacitance in practice working.

结果表明，尽管实际中切除空载变压器过电压的幅值并不是很高，特别是带负载变压器的情况，但重燃过电压的陡度较大，对变压器绕组的纵绝缘有累积作用，在实际工作中应以并联电容为基础的限压装置。

Under the base of it, also considering the characteristics of the multi-channel multistage rimfire gas switch, much study and experiments of the surface flashover along the PMMA insulator and the PMMA housing of the switch were done. Following conclusions were drawn: After introducing PMMA insulator among the board electrodes, the voltage of the discharging of the SF6 drops by 30%. With increasing of the pressure of SF6, voltage of the discharging descends more sharply. With PMMA spacer, the dispersing of the discharging voltage of the gas gap increased as compares to the unbridged gap, such increases in value of the discharging voltage become more obvious with the gas pressure increased.

本文对SF6气体中的沿面放电及影响因素进行了分析，在此基础之上结合边缘点火多级多通道气体开关的沿面绝缘结构特点，经过大量理论分析和电场计算，对有机玻璃支撑绝缘和有机玻璃外筒进行了沿面放电研究，研究结果表明：板电极间SF6气体间隙引入有机玻璃绝缘子后，间隙放电电压平均下降约30%，随气压增大放电电压下降趋势增大，引入有机玻璃绝缘子后放电分散性明显增大，随气压增大，放电分散性呈增大趋势。

Saturable reactors and induction regulators are used to provide a stepless voltage control.

可用Saturable反应堆和电感式电压调节器来供应无极控制电压。

Two kinds of fluids including liquid crystal and the mixture of liquid crystal and dibutyl sebacate were injected into the micro motors with four different structures of electrodes respectively.The renational corves between the rotate speed of the rotor and the voltage were got,and a series of conclusions o...

分别将单体液晶和单体液晶与癸二酸二丁酯的混合液体注入具有4种不同电极结构的微马达，得到了8条转子转速与电压的关系曲线，得出了转速与电压、液体种类、电极结构等关系的一系列结论。

Objectives and methods: The present study is undertaken to examine our hypothesis that with the accumulation of ion channels, increased sialic acids at the injury site or DRG somata result in a reduction of net transmembrane potential that evoke ESD in injured neurons.

膜蛋白的一个共同特性是其膜外域接受密集的糖基化，糖基含有大量带负电的唾液酸，如大部分离子通道，特别是电压依赖性的钠通道含有大量的唾液酸，而且这些负电荷靠近钠通道的电压感受器而易化通道开放。

The research indicates that the method of controllable heat saving load and adjustable capacitor has the advantage of simple structure and fewer investment, it can stable the frequence and voltage better. The method, aiming to maintain the frequence, is more better. It can stabilify the frequence as well as less excursion of the voltage in the same time.

研究表明，可控热负荷加可调电容的方式结构简单、投资较少，可较好地稳定频率与电压，采用以频率为控制目标的控制效果较佳，既能很好稳定频率，又不使电压偏移太远。

The invention ensures that the SVC can not only complete the unbalanced load equalization compensation but also control the stabilization, thereby raising the precision of the susceptance computation of the SVC, guaranteeing the balance compensation of the charge, improving the performance in the stabilization control of the SVC voltage and maintaining the voltage stabilization of a common connection joint.

本发明能让其中SVC既能进行不平衡负荷平衡化补偿，又能对稳定控制，提高了静止无功补偿器电纳计算的精度，确保负荷的平衡补偿，改善了SVC电压稳定控制时的性能，维持公共连接点的电压稳定，具有较高的鲁棒性和响应速度。

The susceptance of the capacitor and the ration of the OLTC are regarded as control variables in the reactive power optimization to overcome the disadvantages in application of equal wastage ration method in distribution network.

传统的无功优化技术是以等网损微增率方法为基础的[1]，其主要优点是简单、有效，但对于配网来说，却存在两个主要缺陷：由于配网总的无功最优补偿容量无法确定，所以等网损微增率方法无法得到一个较优的补偿方案；在配网的实际运行中，当电压偏差较大时，有载调压变压器往往作为凋节电压的手段而对无功功率的分布产生影响，使得等网损微增率方法难以实现。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。