相量

The paper presented the arithmetic of difference Kalman Filtering and the arithmetic of KF and DKF used to the phase measurement.

本文提出了差分 Kalman 滤波算法，并把 Kalman 滤波和差分 Kalman 滤波算法用于相量测量。

ABSTRACT With the development of installed capacity and power system interconnect scale, the importance of stable monitor and control is becoming more and more obvious. The phase angle is one of basic state variable of electric power system, so monitoring and controlling power angle and phasor of the bus voltage are the most important means.

随着电网装机容量的增大及电网互连规模的扩大，电网的稳定监视和控制越来越重要，而相角是反映系统最基本的状态变量之一，因此监视和控制发电机的功角和母线电压相量，将是电力系统稳定监视和控制最重要的手段。

The dynamic phasor model of three-phase distribution parameter lines is also developed in this dissertation.

通过对算例的仿真，并与电磁暂态模型仿真结果的比较，验证了动态相量模型能突破传输时间常数对分布参数线路仿真步长的限制，用来仿真三相分布参数线路上的电磁暂态过程。

Maximum electrodynamic power and the impulse-current of a short cicuit were analyzed and calculated by using phasor methods, when three phases in this symmetric power system happened to be shorted.

bstract 用相量方法分析和计算了三相对称电力系统发生三相短路时的短路冲击电流和最大电动力，给出了动稳定度校验条件。

This method is based on the time-varying Fourier coefficients series of the system variables,and focuses on the dynamics behavior of the Fourier coefficients.

为适应电力系统快速精确仿真和分析控制的需要，采用了一种新的建模方法—基于时变傅立叶级数的动态相量法，对电压源型直流输电进行建模和仿真。

The maximum of the sinusoidal solution equals approximately to that of the output voltage, if the circuit's parameters are reasonable.

在合理参数下，可以用该相量的最大值，近似作为输出电压最大值。

According to the definition for the current and voltage transducer with small power, this paper provides the classification and nomen clature of transducers.

本人根据小功率电流电压变换器的定义给出了变换器的分类原则和命名方法，借助等值电路和相量图导出了各种电流电压变换器的误差公式。

According to the superposition principle of electric circuits, the post-fault power network is equivalent to the superposition of network in normal state and that composed by fault components; then taking single-phase system for example, the fault distance and asynchronous time are taken as unknown numbers and the fault location equations for normal voltage and current phasors as well as fault components are established; and then the analytical expression for fault distance is deduced, in addition the recognition method of false root is given.

该算法根据电路叠加原理，将故障后的网络等效为正常状态网络和故障分量网络的叠加，然后以单相系统为例，以故障距离和非同步时间作为未知数，对正常电流电压相量和故障分量分别建立测距方程组，推导出故障距离的解析表达式，并给出了伪根的识别方法。

The aim of this paper is to study the key technologies of synchronized phasor measurement.

论文旨在研究同步相量测量系统的关键技术。

The aim of this paper is to study the key technologies of synchronized phasor measurement unit.

本文针对当前同步相量测量装置的关键技术，开展了研究工作。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新