该方法可以用于电力系统扰动的实时监测。
The proposed method can be applied to real-time monitoring of power system disturbances.
采用合理的发电机励磁控制方案对改善电力系统扰动稳定性有着重要的作用。
Proper program of excitation control is important in the improvement of the disturbance stability in power system.
分析了电力系统在周期性负荷扰动下的振荡失稳问题。
The power system instability caused by oscillation under periodical load disturbance was analyzed.
作者研究了在周期性负荷扰动下电力系统安全盆的分形侵蚀，通过数值仿真给出了不同的扰动值对安全盆的侵蚀程度。
The fractal erosion of safe basin in a power system disturbed by a periodical load is studied, and the erosion extent induced by different disturbance values is numerically analyzed.
对电力系统小扰动稳定域的微分拓扑学性质进行了初步探讨。
Differential topological characteristics of the small signal stability region (SSSR) in power systems are tentatively studied in this paper.
本文首先分析了闪变扰动源的闪变机理和闪变分量在电力系统中的传递规律。
Firstly, the mechanism of flicker disturbance and transfer rule of flicker in power system are discussed in this paper.
继电保护中隐性故障以不正确的和不期望的方式切除电力系统元件造成电力系统大面积扰动。
It was found that hidden failures in protection schemes caused the disconnection of power system elements in an incorrect and undesirable manner contributing to the disturbance degradation.
在保证小扰动稳定前提下，电力系统可承受的最大时滞称为时滞稳定裕度。
Delay margin is defined as the maximum time delay that system can sustain without losing its small signal stability.
电力系统的暂态安全问题主要是由大扰动引起的。
Large disturbances are the main threats to transient security of power systems.
使用该方法，可以研究电力系统遭受大扰动后的振荡模式和非线性动态行为。
Using this method, the oscillation modes and non-linear dynamic behavior of power systems subjected to large disturbances can be studied.
本论文首先对电力系统的各种扰动进行了概述，分析了国内外励磁控制的研究方法，提出本论文的研究目的及意义。
At first, the paper introduces the various disturbances in the power system, analyzes international exciter control research methods, presents purpose and meaning of this paper.
本文提出了用“频谱分析”的方法分析外部扰动引起的电力系统随机振荡，并建立了完整的数学模型。
This paper puts forward a "Spectrum Analysis" method to analyse the random power oscillation in power system caused by external disturbance, and sets up a complete digital model.
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。
Power System forced power oscillation is a kind of low frequency oscillation caused by persistent periodic small disturbance.
应用奇异性理论研究了电力系统在周期性负荷扰动下的静态分岔现象。
The static bifurcation in electric power system under periodical disturbance is studied with singularity theory.
提出了一种多机电力系统小扰动稳定分析的解耦降阶法。
A decoupling and reducing-order method is brought forward to analyze small signal stability of multi-machine power system.
提出一种基于数学形态学的快速计算方法，进行电力系统采集数据的扰动定位。
A new fast processing method based on mathematical morphology is proposed to locate the disturbance of the power quality signals corrupted by noises.
在电力系统中，任何故障或扰动都会使得系统中出现衰减直流分量，它将影响继保装置的测量精度。
Decaying DC offsets are generated following any faults or disturbances in an electric power system, and the measure accuracy of digital relay devices is affected.
电力系统继电保护的不正确的操作造成了扰动的逐步扩大。
Incorrect operations of power system's protection schemes have contributed to a spread of the disturbances.
对电能质量扰动检测的研究逐步成为现代电力系统中重要研究课题之一。
Power quality disturbances detection is becoming one of the most important subjects in modern power system.
这就需要对电力系统中的扰动能迅速地改变励磁电压。
This may require rapid changes in field voltage due to disturbances on the power system.
电力系统基波幅值、相位、频率扰动是最基本的电能质量扰动。
Amplitude deviation, frequency deviation and phase deviation are basic power quality disturbances.
随着电力系统规模的不断扩大，电力系统经济性得到了显著提高，但同时也削弱了系统抗大扰动的能力。
With the enlargement of power system scale, power system economy has gained remarkable improvement. At the same time, the ability of resisting disturbance is weakened.
研究了电力系统在周期和准周期扰动下的次谐和混沌轨道。
This paper investigates the orbits of sub-harmonic and chaos in power system under periodic and quasi-periodic perturbation.
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.
针对电能质量扰动信号的特性，本文采用小波变换对电力系统的高频、瞬时脉冲、电压切痕扰动信号进行检测。
According to features of power quality disturbance signal, this paper detects the disturbance signals of high-frequency, transient impulse and voltage notch with wavelet transforming.
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.
研究了具有内部参数不确定及外部扰动的单机无穷大电力系统的暂态稳定性问题。
The transient stability problem is studied for a single machine-infinite bus system with internal parameter uncertainties and external disturbances.
有效地检测电能质量扰动，对于治理和改善电力系统的电能质量具有重要意义。
It is very important to find out the power quality disturbance in order to improve power quality.
研究结果对提高电力系统小扰动稳定性具有 一定的指导意义。
Tentative Study on the Influence of Non-Differential Components to Power System Small Signal Stability;
准确解析事故后电网的小扰动稳定域，对确保电力系统的经济运行具有重要意义。
The post-contingency small-signal stability region of power grid is analyzed for its economic operation.
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