提出了一种利用富氏滤波器的输出测量电力系统频率的算法。
An algorithm which USES output of the Fourier filter to measure power system frequency is presented.
防止电力系统频率崩溃是防止系统大面积停电的一项重要措施。
Perventing frequency collapse is an important prevention measure of widespread blackout.
分析了电力系统频率偏移和谐波对传统感应电能表误差特性的影响。
The influence of frequency deviate or harmonics to the traditional kilowatt hour meter of electromagnetic induction type is analysed in the paper.
较为全面地综述了国内外在电力系统频率概念及其测量技术方面的研究成果。
The recent achievements in the field of power system frequency measurement are summarisedin this paper.
船舶电力系统频率的稳定性主要取决于船舶电站柴油机调速系统的转速响应特性。
The frequency stability of a ship power system is determined by the speed response characteristic of the diesel engine speed regulation system in the ship power station.
电力系统频率是电能质量的重要指标之一，也是电力系统运行最重要的参数之一。
Electric power system frequency is an important indicator of power quality and is one of the most important parameters of power system operation.
本文对电力系统的频率特性进行了分析，指出电力系统频率特性可分为静态频率特性和动态频率特性。
This paper analyzes frequency characteristic of power system, and points out that it is classified into static and dynamic.
它涵盖五个方面：供电电压允许偏差、公用电网谐波、三相电压不平衡度、电力系统频率允许偏差、电压允许波动和闪变。
It covers five aspects: supply voltage tolerance, utility harmonic, three-phase voltage unbalance, power system frequency tolerance, voltage fluctuation and flicker.
采用常规的电力系统元件模型和参数进行数值仿真所得的频率变化曲线与实测曲线偏差较大。
As for the numerical simulation by traditional power system component models and parameters, the obtained dynamic frequency curves evidently diverge from measured ones.
理想的电力系统要求以频率和幅值稳定的正弦电压进行供电；
The ideal power system needs to be supplied with sine voltage whose frequency and amplitude are both stable.
但是，频率崩溃的危险是始终存在的，并对电力系统的安全稳定运行造成了很大的影响。
However, the danger of frequency collapse always exists, and has a great impact for power system running.
提出了一种基于数字信号处理器的基波相位和频率校正检测方法，可用于电力系统中电压或电流基波分量同步信号的获取。
A novel fundamental frequency and initial phase detection method based on DSP is proposed, which can be used to get synchronous fundamental frequency voltage or current signals of power system.
针对电力系统采样信号，提出一种采用不同采样频率的广义形态滤波方法。
A generalized morphological filtering method using different sampling frequencies is proposed for sampled power system signal.
然后，应用分层估计和前馈补偿原理导出电力系统状态估计和负荷频率控制方程。
Then the principles of hierarchical estimation and feed forward compensation are applied to derive the power system state estimation and load frequency control equations.
除了偶尔出现异常情况外，电力系统的频率可以保持非常准确。
System frequency is held very accurately except during infrequent time when abnormal situations exist.
电力系统一般都很复杂且变量又多，实现二阶负载—频率自动控制也相应变得很困难。
Because power systems are complex and multi-variable, it is very difficult to realize automatic secondary load-frequency control.
随着变速风电机组容量在电网中的所占比例的不断提高，其接入电网将给电力系统的频率控制带来不利影响。
With the rate of the variable speed wind turbines connected to the grid increasing, it will bring adverse influence on frequency control of the power system.
基于电力系统分析软件包pSASP，使用其用户自定义功能，建立了辅助频率控制模型。
A detailed user-defined UD auxiliary frequency controller AFC model of HVDC has been developed based on Power System Analysis Software Package PSASP.
多区域电力系统的负荷频率控制(LFC)是保证电能质量和实施安全和经济调度的重要举措。
Load Frequency Control (LFC) of the multi-area power system is an important measure for guaranteeing the electric energy qualities and implementing the secure and economic dispatch.
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.
低频减负荷（UFLS）作为电力系统的第三道防线，是一种防止系统频率崩溃的有效手段。
Underfrequency Load Shedding (UFLS), which is the third defensive line of power system, is one of effective methods to mitigate the frequency collapses.
现代电力系统调度中心装设的大量量测装置可以记录系统中发生的功率—频率动态过程。
The power-frequency processes in power grid can be recorded by a lot of measuring devices installed in modern power system dispatching center.
在突然恶性事故情况下，电力系统产生严重的频率下降，导致系统崩溃和大面积停电。
Under malignant emergency conditions, the frequency of power system seriously and consequently drops down which lead, system to collapse and a large area outage.
在电力的众特性之中，电力系统工程师主要关心的是保持恒定的工作频率。
Of the characteristics of electric power, the primary concern of the electric power system engineers is to maintain a constant operating frequency.
利用电力系统三相交流电压过零点和高速数字频率合成器解决了跳频系统中同步和快速频率合成的两个关键问题。
The zero-crossings of the AC voltage and digital frequency synthesizer are used in solving the two main problems in frequency hopping system-synchronization and fast frequency synthesizing.
电力系统的应用通常在2- 15khz的开关频率范围被认为是足够的。
Typically switching frequencies in the 2-15 kHz range are considered adequate for power systems applications.
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.
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。
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。
This paper describes the mechanism of power system low frequency oscillation production, and discusses the current common analysis methods. Through comparative ana…
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