查询词典 transient period

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 steady state and transient components of the current injection artifact are nulled with the DC and transient balance controls.

目前注射工件的稳态和瞬态成分就被删除了与 DC 和瞬态平衡控制。

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。

During the big fluctuation transient condition of a hydropower station operation, in order to minimizing the water pressure and the hydraulic units' run-speed rising, optimizing the wicket gate closing law is one of the most economic way to solve the station operation security problem during the process of big fluctuation transient.

水电站运行的大波动过渡过程中，为了最大限度地减少水压上升值与转速上升值，通过导叶关闭规律来解决大波动过渡过程中水电站的运行安全问题是最经济的有效措施之一。

Through discussing further the reflective and refractive coefficients of line boundary, the features of line boundary are as follows: the attenuation of high frequency band (especially in band of line trap) of transient components generated by fault through line boundary is obvious, whereas the low frequency band (1~10kHz) components are hardly influenced. Moreover, the transient components below 100kHz should be adopted in purpose of outstanding the line boundary and weakening the transmission influence of transmission line.

通过对线路边界的透、反射系数的进一步分析发现：暂态信号的高频段穿越线路边界时将大为衰减，而低频段(1~10kHz)几乎不衰减；为弱化线路的传输影响而突出线路边界的作用，宜选用100kHz以下的信号分量。

The handling stability is analyzed, mainly the steering transient response test of steering wheel step input、 the steering transient response test of steering wheel angle pulse input、 return-ability test、 steady static circular test and central steering test are carried out. With those test, how the front suspension system can influence the handling and stability performance is investigated.

在此基础上进一步建立了整车模型，包括前悬架系统、后悬架系统、转向系统、前轮胎系统、后轮胎系统、车身系统，分析了该车的操纵稳定性，主要进行了稳态回转试验、转向盘角阶跃输入、转向盘角脉冲输入、转向回正试验、转向盘中间位置转向试验，并通过这些试验来考察了前悬架对操纵稳定性的影响。

This thesis mostly includes main part models of the second loop system, for example, the steady state model and transient state model of the turbine, the transient state models of the condenser、steam emission system.

本论文的主要内容是：首先，建立二回路系统主要部件的数学模型，包括汽轮机稳态模型和动态模型，凝汽器和排放系统动态模型。

At same time, designed software and hardware systems collecting and processing flywheel transient speed of the engine, measured flywheel transient speed fluctuation and indicator diagram of engine under different speed and different load, and testified the effectiveness and reliability of the constructed models.

相应地设计了发动机飞轮瞬态转速采集与处理软、硬件系统，并实测了各种工况下发动机飞轮瞬态转速波动及示功图，验证了所建模型的有效性和可靠性。

More direct, directer ; most direct, directest

径直的，笔直的

Do you know how to use a chain saw?

你知道如何使用链锯吗？