Low frequency oscillation resonance mechanism of two-machine system was established in this paper.
理论推导了两机互联系统的共振机理，分析了两机互联系统固有频率与阻尼的关系。
The conclusion can provide reference to research into the causes of power system 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。
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。
The low frequency oscillation of monsoon rainfall propagate in meridional direction from the south to the north.
降水低频振荡呈现明显的由南向北的经向传播。
The conclusions provide the important reference for the suppression of low frequency oscillation and stable operation I...
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。
Power System forced power oscillation is a kind of low frequency oscillation caused by persistent periodic small disturbance.
电力系统强迫功率振荡为持续的周期性小扰动所引起低频振荡现象。
This makes design and producing VCOs can avoid the disturbing of low frequency oscillation, and improve the features of VCOs.
使低相噪vco的设计及调试能免于低频振荡的干扰，从而有利于提高VCO的各项指标。
It reveals the probability and conditions of extra-low frequency oscillation and double frequency oscillation in power systems.
该分析揭示了电力系统产生超低频振荡和倍频振荡的可能性和条件。
Thyristor controlled series compensation (TCSC) possesses important meaning in damping low frequency oscillation in power system.
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。
Fixing power system stabilizer on the governor of synchronous generator is an effective method to restrain low frequency oscillation.
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。
The conclusions provide the important reference for the suppression of low frequency oscillation and stable operation in power system.
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。
A combinational electric system stable machinery GPSS is designed to fight back low frequency oscillation and to improve electric system stability.
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。
The traditional PSS use the local signal such as the generator electromagnetism power or shaft speed as its input to restrain low frequency oscillation.
传统的PSS使用本地可测量的发电机电磁功率、转速等作为输入信号以抑制低频振荡。
The test show that the simulation test result is identical with that of practical test. The low frequency oscillation damping is considerably enhance on w...
试验表明，仿真试验结果与实际试验一致，无论发电或电动机运行方式，对低频振荡阻尼均有较大增强。
This paper analyzed the effects of several excitation controllers, and found that the unsuitable controller can cause a low frequency oscillation on power system.
本文经理论分析提出“系统中产生负阻尼的原因是不适当的励磁控制方式”的结论。
This paper describes the mechanism of power system low frequency oscillation production, and discusses the current common analysis methods. Through comparative ana…
由于低频振荡频率较低、周期较长、波及面较广，给电力系统带来的危害也较大。
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.
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。
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.
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。
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.
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。
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.
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。
Combining network characteristics of west Hubei, the principle and method for suppressing low frequency oscillation are studied, and the corresponding measures are presented accordingly.
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。
Because of power systems being more and more complicated, besides low frequency oscillation by minus damp, there is also chaos oscillation that can not be dispelled by PSS in power systems.
由于电力系统的日趋复杂和庞大，电力系统除了因负阻尼引起的低频振荡外，还存在PSS不能消除的混沌振荡的危机。
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.
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。
In the context of the NCAR daily reanalysis data of 1998, this paper investigates the source or sink features of atmospheric LFO (low frequency oscillation) over the Tibetan Plateau in summer 1998.
使用1 998年美国NCAR再分析的逐日资料，研究了1 998年夏季青藏高原大气低频振荡的源、汇特征。
For synoptic scale systems, the SST thermal forcing mainly excites the atmospheric low - frequency oscillation.
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。
The above experimental result is of value for the mechanism and suppression of low frequency combustion oscillation in an afterburner of a turbofan engine.
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 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.
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。
For synoptic scale systems, the SST thermal forcing mainly excites the atmospheric low-frequency oscillation.
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.
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。
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