有功功率

With the measured frequency and time constant, the phase shift angle of CTs and PTs can be estimated.

提出了电能表中补偿电流互感器和电压互感器角差的有功功率和无功功率计算方法。

In the probabilistic model for wind farm, the uncertainties of wind speed is takes into account, and the real power injected and reactive power absorbed by the wind turbine are described as the function of the voltage magnitude, the slip of the induction machine and the circuit parameters of the wind turbines. In the unified iteration method, the slip of induction machine is introduced as the new correction value. The Newton-Raphson algorithm is used to solve the unified iteration of state variable and slip. Thus, the proposed method retains the quadratic convergence of the Newton-Raphson algorithm.

该风电概率模型考虑风速的随机性，将风机输出的随机有功功率和吸收的随机无功功率描述为电压幅值、异步机的滑差和风轮机的电路参数的函数；联合迭代方法中，异步风力发电机的滑差作为新的修正量被引入，使用牛顿-拉夫逊方法求解关于潮流状态变量和滑差的联合迭代，加热器因而迭代过程保持了牛顿-拉夫逊方法的平方收敛性。

Based on the conversion of trigonometric function ,a novel real-time algorithm of reactive power similar to that of active power is presented,which reactive power is speed-ily and accurately measured by the voltage,current and frequency.

运用三角函数变换的方法，提出了一种新颖的与计算有功功率相似的电网无功功率的离散化实时算法。

In the field of measurement and display, it ranges from ampere meter, Voltage Meter and fault current state directives to power factor, wattful power, wattless power, frequency, and even harmonics, the fault condition wave acquisition, and so on.

在测量、显示这块，如电流表、电压表、故障电流及状态指示，以及功率因数、有功功率、无功功率、频率，甚至谐波，故障状态的波形捕捉等等。

This paper advances the idea of measuring power of three-phase load,by using one Wattmeter,and draws circuit.

系统研究、总结了通过使用一只瓦特表测量得出三相负载的总有功功率和无功功率的思路，并给出接线电路图。

With this important concept which the reads of wattmeter was equal to the product of the effective value of the voltage across the potential coil, the effective value of the current flowing in the current coil, and the cosine of the phase-angle between the current and the voltage. It was speciled with some examples to determine the phase-angle measured between line voltage, line current in different connection.

围绕有功功率表的读数等于该功率表电压线圈所接电压的有效值、电流线圈所通过的电流的有效值以及电压与电流相位差余弦的乘积这一重要的概念，用实例说明在不同的接线情况下如何利用各电量的相量关系来确定所测的线电压、线电流之间的相位差角。

Node with zero input active and reactive power.

注入有功功率及无功功率为零的节点。

In this paper, quantitative analysis on exchange between inverter unit of DVR and grid is made when voltage temporarily drops. Then it studys detailedly the relationship of output voltage and power amang inverter unit of DVR ,grid and load.Finally Matlab simulations of all the compensation method are made.

本文定量分析计算电网电压暂降时DVR 逆变单元与电网的功率交换情况，详细研究逆变单元在各种补偿策略下的输出电压和有功功率与故障前后电网电压、负载电压和参考相量的具体关系，最后通过Matlab 仿真研究各补偿方法。

Then it studys detailedly the relationship of output voltage and power amang inverter unit of DVR ,grid and load.Finally Matlab simulations of all the compensation method are made.

本文定量分析计算电网电压暂降时DVR 逆变单元与电网的功率交换情况，详细研究逆变单元在各种补偿策略下的输出电压和有功功率与故障前后电网电压、负载电压和参考相量的具体关系，最后通过Matlab 仿真研究各补偿方法。

Those are measured and calculated by computer such as voltage, current, frequency, active power, reactive power and power factor. The errorless of three-phase voltage and current is less than 0.5 percent.

用微机实现对电网电压、电流、频率、有功功率、无功功率、功率因数的测量和计算；计算高压配电线路得出的三相电压、三相电流有效值误差小于0.5％。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。