无功功率

三相电路瞬时无功功率理论的研究

A Study on the Theory of Instantaneous Reactive Power of Three-Phase Circuits

基于DSP的三相无功功率检测装置

Design of Three-phrase Detection of Reactive Power Based on DSP

一种基于Hilbert数字滤波的无功功率测量方法

A method of reactive power measurement based on Hilbert digital filtering

基于2对Hilbert移相滤波器的无功功率测量方法

Method of Reactive Power Measurement Based on Two Pairs of Hilbert Digital Filters

利用Hilbert变换测量无功功率能获得较高测量精度。

The measurement of the reactive power using Hilbert digital filter could obtain high precision .

MCS-51系列单片微型计算机控制的无功功率补偿装置

A reactive power compensating device controlled by MCS-51

本文提出用静止无功功率补偿器（SVC）对配电网的电压闪变进行抑制的控制策略。

The paper propounded that used the SVC to control voltage flash of the network .

分析了SVC装置现有的无功功率检测方法，提出了一种基于正交小波变换的基波无功功率实时检测方法。

A novel method to detect real-time reactive power was presented based on wavelet transform .

结合DSP芯片的特点分析了仪器的硬件电路及其对电压、电流、有功功率、无功功率、频率、谐波、电压闪变等各项电能质量监测功能的实现原理。

And analyses the circuits of the instrument , and realization of measurement of voltage , current , power , frequency , harmonic , glitter of voltage .

TSCW/660KVAR动态无功功率补偿器在焊接生产线上的应用

Application of TSC-W / 660 KVAR Dynamic Var Compensator in Welding Production Line

通过对传统直接功率控制的分析，推导出一个新的开关表，可以显著地改进PWM整流器的无功功率控制性能。

Through analysis of classical DPC , a new switch table can be deduced which promote the efficiency of reactive power control of PWM rectifier .

在三相瞬时无功功率理论的基础上，完整地推导出了单相电路的Park变换，把它与小波理论相结合，形成了一种新单相电路的谐波、无功检测方法；

A new detection method of harmonic and reactive power is proposed by combining the wavelet theory with the Park transformation deduced completely on the basis of three-phase instantaneous reactive power theory .

因而可通过分离检测各模块输出的有功功率差和无功功率差，并利用DSP控制电路来控制每模块的基准相位和电压幅值，使各模块输出功率保持均衡。

The control method of paralleled inverter is presented , that is , DSP controller controls the output power to balance through regulating the reference voltage phase and value of inverter .

SVM静态负荷模型建模的基本思想是用两个SVM分别表示有功功率、无功功率和电压幅值、频率值以及其他表征负荷特性的参数之间的非线性映射关系。

In static load modeling , the nonlinear mapping between active power or reactive power and voltage magnitude , frequency and load parameters is established by SVM .

为此，本文利用瞬时无功功率理论推导了功率误差的数学表达式，并在此基础上提出了一种基于PI调节的参考电流计算新方法。

This paper derive the mathematic expression of power inaccuracy using instantaneous reactive power theory and come up with a new PI based reference current calculation method .

由GTO管构成的电力系统无功功率电源

Reactive power generator made of GTO

作为无功功率的主要补偿手段，基于晶闸管控制的静止无功补偿器（SVC）可以较好的对无功进行补偿。

As a main solution to compensate reactive power , static var compensator based on thyristor-controlled can compensate reactive power preferably .

电力系统无功功率综合优化&广义Benders分解法

A comprehensive optimization for the VaR allocation in power systems ── the generalized bender 's decomposition method

该APF的无源部分补偿无功功率，而其有源、无源部分则共同抑制谐波。

The passive component of the new hybrid APF makes reactive power compensation while the active and passive component makes harmonic suppression together .

统一潮流控制器（UPFC）可以有效控制线路的有功和无功功率。

UPFC ( Unified Power Flow Controller ) is always used to control the active and reactive power of transmission lines .

所在电力网络有足够无功功率时，应考虑将感应发电机安装在TRT装置。

It should be considered installing induction generator in TRT when electric power network has enough imaginary power .

针对这一问题，本文应用一扩展Hopfield神经网络&耦合梯度网络，建立了油田电力网无功功率管理的全局优化的数学模型。

To solve this problem , an expanded Hopfield neural network-coupled gradient network is used to construct globally optimizing mathematical model of oilfield power system .

高精度智能无功功率补偿器是采用相关理论的算法和PIC微控制器实现的一种控制器。

Passive power compensator with high precision and intelligence is a controller , which is accomplished by the algorithm of relative theory and PIC microcontroller .

传统高压直流输电（HVDC）系统具有技术成熟、成本低廉的优点和需要吸收大量无功功率以及存在换相失败的危险等缺点；

Conventional HVDC has the advantages of mature state of art and lower cost and the disadvantages of absorbing large reactive power and the danger of commutation fault .

第I部分着重探究并提出了CCC的无功功率特性、无功特性曲线以及经济补偿度等问题。

In Part II of this paper , characteristics and curves of reactive power , economical compensation degree about CCC are presented .

SVG主电路结构是基于PWM变流器的拓扑结构，PWM交流器可以在四象限运行，所以SVG亦可在四象限运行，从而达到为系统提供无功功率的目的。

The main circuit configuration of SVG is based on topology configuration of PWM 4-quadrant converter , AC current of PWM converter can work in 4-quadrant , so do SVG .

本文中主要针对FACTS中无功功率补偿控制方案进行介绍，并针对目前电力界广泛重视的可控串联补偿（TCSC）进行研究与分析。

In this thesis , it mainly introduces Var compensation control scheme of FACTS and takes TCSC ( Thyristor Controlled Series Capacitor ) which is extensively recognized researched and analyzed .

有功与无功功率的解耦的目标可以分别由控制器的dq轴电流调节来达到。

The decoupling control of active and reactive power can be achieved by controlling the d-axis and q-axis components of the controller currents .

相控电抗型无功功率补偿装置（SVS）已为高压、超高压输变电广为采用。SVS工作原理决定了它在运行中不可免地会产生特征和非特征谐波。

According to the principle of SVS , the characteristic and Non-characteristic harmonics will be generated in operation .

该测量算法采用复序列快速富里叶变换（FFT）原理，计算各次谐波的电压、电流、有功功率、无功功率和功率因数。

By means of complex sequence FFT , the algorithm can be used to calculate the voltage , current , active power , reactor power and power factor of any order of specified harmonics .