对于天气尺度系统，海温热力场则主要激发出大气低频振荡。
For synoptic scale systems, the SST thermal forcing mainly excites the atmospheric low - frequency oscillation.
揭示出冷空气的向南传播主要是一种低频模态的10—20天周期的振荡。
It has been revealed that the propagation of cold air mainly shows a mode of 10—20 day period oscillation.
所得结论对于电力系统低频振荡的抑制以及电力系统稳定运行具有重要的参考价值。
The conclusions provide the important reference for the suppression of low frequency oscillation and stable operation in power system.
PSS装置的应用是电力系统解决系统低频振荡的有效途径，是保证电力系统安全、稳定运行所必不可少的方法。
The PSS equipment is used to eliminate the low-frequency oscillation in the electric power system to ensure safe and stable operation of the electric power system.
在同步发电机组调速器侧装设电力系统稳定器是抑制电力系统低频振荡的有效措施。
Fixing power system stabilizer on the governor of synchronous generator is an effective method to restrain low frequency oscillation.
该研究结果对探讨电力系统低频振荡的产生原因具有一定的参考价值。
The conclusion can provide reference to research into the causes of power system low frequency oscillation .
可控串联补偿(TCSC)对于阻尼电力系统低频振荡具有重要意义。
Thyristor controlled series compensation (TCSC) possesses important meaning in damping low frequency oscillation in power system.
研究机组之间存在水力联系的水电站中，两台机组采用扩大单元接线对系统低频振荡阻尼的影响。
According to two units with hydraulic coupling in hydropower plants, the effect of expanded unit connection to low frequency oscillations damping was studied in detail.
目前，电力系统主要采用电力系统稳定器(PSS)和FACTS阻尼控制器来抑制低频振荡，提高系统小扰动稳定性。
Currently, Power System Stabilizers (PSS) and FACTS damping controllers are widely used to suppress the low frequency oscillations and to improve small signal stability.
该控制器以PM U得到的区域间电压相角差信号作为输入信号，能够直接有效地反映区域间低频振荡特性。
This controller's input signal is the voltage phase Angle difference between two areas obtained by PMU, which can effectively reflect the inter-area low frequency oscillation characteristics.
对于天气尺度系统，海温热力场则主要激发出大气低频振荡。
For synoptic scale systems, the SST thermal forcing mainly excites the atmospheric low-frequency oscillation.
结果表明，由于SSTA在大气中强迫激发出了大气低频振荡，使得ENSO对其后的东亚季风活动仍有明显影响。
The results show that the influences of ENSO on the afterward monsoon activities in East Asia are in existance owing to atmospheric low frequency oscillation excited by SSTA.
同步发电机整流带反电动势负载时，当系统参数不匹配，在一定工况下，可能出现低频振荡。
For some operating conditions, a synchronous generator with a rectifier and back-EMF load maybe exhibit low-frequency oscillations when the system parameters do not match.
同步转矩及阻尼转矩是两个在动态稳定研究中广泛应用的概念，它们对于电力系统低频振荡分析尤为重要。
Synchronizing torque and damping torque are two concepts widely used in dynamic stability studies and especially important to low-frequency oscillation analysis.
分析了变换器低频电感电流的次谐波振荡问题，并提出了抑制措施，实验验证了理论分析的正确性。
Especially, the sub-harmonic oscillation of the low frequency inductor current is analyzed and the method to solve this problem is proposed.
动力学分析和模式大气的计算结果进一步说明了CISK和EWFM的共同作用是激发和驱动热带大气低频振荡的重要物理过程。
Dynamics analyses and model atmosphere calculations further demonstrate that EWFMand CISK are very important physical processes in leading to the low-frequency oscillations in the tropics.
引入一种新的扩展小扰动稳定域的概念，以弥补原有小扰动稳定域无法考虑电力系统(超)低频振荡的不足。
A new type of extended small signal stability region (E-SSSR) is presented so that it can consider the low frequency oscillation phenomena captured in power system operations.
上述结果对研究低频振荡燃烧机理和抑制技术有一定的参考价值。
The above experimental result is of value for the mechanism and suppression of low frequency combustion oscillation in an afterburner of a turbofan engine.
结合鄂西电网的特点研究其抑制低频振荡的原理和方法，提出相应解决措施。
Combining network characteristics of west Hubei, the principle and method for suppressing low frequency oscillation are studied, and the corresponding measures are presented accordingly.
为了抑制电力系统因负阻尼而产生的低频振荡，提高电力系统稳定性，设计了一种组合电力系统稳定器gpss。
A combinational electric system stable machinery GPSS is designed to fight back low frequency oscillation and to improve electric system stability.
降水低频振荡呈现明显的由南向北的经向传播。
The low frequency oscillation of monsoon rainfall propagate in meridional direction from the south to the north.
三波共振相互作用低频振荡周期与初始扰动振幅有很强的相关关系；
The low-frequency fluctuation periods and the initial amplitudes have close relationship in the resonance interaction.
全液压调速系统的油压容易产生脉动，如果油压脉动的频率与电力系统固有频率接近时也可能引发电力系统共振机理的低频振荡。
If the frequency of oil-pressure pulsation is near to power system natural oscillations frequency, power system low frequency oscillations of resonance mechanism can be induced.
小的干扰能够引发电力系统发生低频机电振荡，因此小干扰稳定是限制电力传输容量的主要因素之一。
Small signal stability becomes one of the important factors influencing transmission capacity because low frequency oscillation in power systems is always caused by small interference.
仿真结果表明所设计的模糊电力系统稳定器比传统的电力系统稳定器能更有效地抑制系统低频振荡。
The simulation results indicate that the designed fuzzy power system stabilizer is better than the conventional fuzzy power system stabilizer in suppressing the low-frequency system swing.
低频振荡是一种不利于电力系统安全和稳定运行的现象，而电力系统稳定器(PSS)可以有效抑制低频振荡。
Low frequency oscillation is harmful to power system security and stability, and as one of solutions power system stabilizer (PSS) can effectively restrain such a phenomena.
最后，应用复系数转矩分析法研究了可控串联补偿实现抑制低频振荡的机理。
At last, the reason of why the TCSC can restrain the LFO is given by use of the plural coefficient torque method.
在音响设备中出现的振荡频率极低的低频振荡，常因放大系统的正反馈回路引起。
In audio, a very low frequency oscillation often resulting from a positive feedback path in an amplifier system.
在音响设备中出现的振荡频率极低的低频振荡，常因放大系统的正反馈回路引起。
In audio, a very low frequency oscillation often resulting from a positive feedback path in an amplifier system.
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