查询词典 transient current

Based on the transient simulation program of stator winding internal faults in synchronous generator, this paper presents the effect of stator winding and damper bar resistance on transient and steady currents. It is very necessary to calculate precisely the resistance of stator winding and damper bar resistance in order to simulate fault correctly.

应用同步发电机故障暂态仿真程序分析了定子和转子回路的电阻对发电机故障暂态过程的影响，结果表明为了准确进行发电机内部故障暂态过程计算，应该全面考虑影响的各种因素，准确求取定子和转子回路的电阻。

A transient thermal coupling model of certain internal combustion engine exhaust valve train was built, transient thermal-field distribution of the valve was simulated, and the effect of the thermal conductivity to the thermal-field was discussed.

通过建立某发动机排气门组瞬态热分析藕合模型，对排气门进行瞬态温度场有限元模拟，并探讨导热系数对气门温度场的影响。

Using the user-defined model function of PSASP, transient stability computation is carried out and different models of hydraulic system are taken into consideration. The effect of different hydro-turbine and conduit system models on transient stability computation is compared and analyzed.

利用电力系统分析综合程序提供的用户自定义模型接口功能，在多机系统暂态稳定计算中分别计入水力系统不同模型，分析了水轮机和输水系统不同模型对暂态稳定计算结果的影响。

Mine transient electromagnetic method is one of mainly geophysical methods, which are used to predict water inrush structures nearby the roof, bottom and driving face in roadway. Compared with ground transient electromagnetic method, this technique has many advantages: high resolution, small volume effect, flexibility and high efficiency. However, relatively slow development of its fundamental theory makes it become an immediate problem to be solved.

矿井瞬变电磁法勘探是预测巷道顶、底板和掘进工作面附近突水构造的主要物探方法之一，与地面瞬变电磁法勘探相比，该方法具有分辨率高、体积效应小、灵活和高效等优点；但其基础理论的发展却相对滞后，使之成为矿井瞬变电磁法勘探技术中亟待解决的问题。

The transient conditions of hydroturbines. It is the first time to apply this method to three hydro stations in this country for seek the law of dynamic flow changes in varions transient conditions of prototype tur- bines and results are satisfactorily attained.

结合实测结果，对水轮机动态流量与静态流量的关系、水轮机转速变化对动态流量变化规律的影响、水轮机动态流量变化规律与水轮机引水系统压力变化规律的关系以及过渡过程中水轮机动态效率的变化规律等，进行了理论分析。

The transient state of torpedo electrical drive system,caused by torpedos steding, shifting, and the fluctuation of battery voltage, and thechange of the resistance in voyage, will influence efltire attitude and stability of thetorpedo immediately, as well as every parts of electrical propulsion system. Therefore,it is necessary to theoretically analyZe the transient state of torpedo electrical powerpropulsion system.

鱼雷电动力推进系统在鱼雷启动、变速及因电池电压的波动和在鱼雷航行阻力变化时而产生的暂态过程都将直接对整个鱼雷的姿态和稳定性产生影响，同时对电动力推进系统本身各个组件也将产生不同影响，因此有必要对鱼雷电动力推进系统的暂态过程进行一些理论分析。

This method uses the value of TEF as the assessment of system transient stability and subsequent power oscillation, and pulls the system back to its steady state most rapidly. New control strategy combines transient stability control and damping.

该方法以暂态能量值作为系统经受大扰动后暂稳控制和阻尼后续振荡的指标，使其尽快归零，能同时实现TCSC的暂态稳定控制和对后续功率振荡的阻尼。

In terms of each of these essentials, Lyapunov direct methods, transient energy function methods and extended equal-area criterion are critically compared in this four-part paper. This reveals the essence causes for why both Lyapunov direct methods and TEF methods cannot be applied to transient stability analysis of power systems.

由4篇短文组成的系列文章按照上述各要素，讨论了针对平衡点稳定性的李雅普诺夫法、将平衡点稳定性理论应用于有界稳定性的暂态能量函数法以及针对有界稳定性的扩展等面积准则这3种稳定性理论在大扰动稳定性分析中的应用。

The simulated results show that the trend of the dust migration and velocity based on the 3-D transient quasi-single phase models is well in agreement with that based on 3-D two phase flow model. Compared with the two phase flow model and the 3-D transient quasi-single phase models, the time reaching the standard of ventilation is almost the same.

利用拟单相流模拟粉尘在开挖进尺为50m的引水隧洞内的迁移，其趋势和速度与两相流模型的模拟结果基本一致，通风达标时间也接近。

It also becomes more difficult to model and simulate power grid. Traditional"Quasi-stationary"phase models can't be used for studying electromagnetic transient phenomena; on the other hand, the EMTP models can be used to analyze the electromagnetic transient accurately, but for the limitation of the step size, it can't be used to simulate the large network with a high speed.

这对电力系统的建模和仿真提出了更高的要求，传统的机电暂态模型由于建立在&准稳态&假设基础之上，因此不能用来仿真变化迅速的电磁暂态过程；而电磁暂态模型，虽然能准确反映电磁暂态过程，但由于仿真步长很小，仿真速度受到限制，不适合用来仿真大型电力系统。

The system can be widely used in belt weighing and batching process control,etc.

介绍了基于智能模糊控制的嵌入式配料系统的设计方法，对模糊PID控制过程和系统调零作了重点的讨论，同时给出了PID控制的程序流程图和系统定长调零子程序。

"I dunno," she answered,"but if you show me aroun', I'll recognize it from the lighthouse just outside the porthole."

"我不知道，"她回答说，"如果你能带我转转，我能认出来的，因为灯塔就在舷窗外。"