无功的

In order to eliminate the harm brought by the wave aberrance of voltage and current, it is necessary to control the harmonic wave and compensate the reactive power. So it is very important to test the electric parameters.

为了消除电压、电流的波形畸变产生的危害，就必须对电力系统进行谐波抑制和无功补偿，因此对电力系统中的电气参数进行测试和分析就显得尤为重要。

Moreover, it makes the coefficient matrix of centralized IPM's linear correction equation a block diagonal bordered matrix, which can be decomposed into the constraints equation on internal variables of independent sub-areas and coupled constraints equation. During each IPM iteration, internal variables and coupled variables are solved distributedly; thus distributed algorithm of multi-area ORPF is implemented.

在此基础上，论文将该线性方程分解为相互独立的子区域内部约束方程和复制节点的耦合约束方程，在每次内点法迭代中分布分块求解内部变量和耦合变量，从而实现多区域无功优化的分布式计算。

Voltage control and reactive power optimization are effective means to increase rate of qualified voltage, reduce grid losses, and improve the system stability.

摘 要：电网的电压控制和无功优化是提高电压合格率，降低网损，提高系统稳定性的有效手段。

In allusion to the large amount of harmonic existing in the electric system, this paper proposes the new method to Filter harmonic. This new method adopts the single-tune filter and high-pass filter.

针对无功补偿中存在的电网谐波问题，提出了采用单调谐和高通滤波器来进行谐波滤波的方法。

In this paper, V connection transformers are chosen;cophase power supply systems based on active filter and V connection are studied. By controlling filter with real time detecting methods balances three phases, filter reactive and harmonic currents.

本文选择了&V&型变压器，研究了基于有源滤波器和&V&型变压器的同相供电系统：通过实时检测系统的综合补偿电流，控制有源滤波器，平衡三相，滤除无功和谐波电流。

This article uses MATLAB the fuzzy logic toolbox design fuzzy control system for example transformer substation voltage reactive integrated control.

本文利用MATLAB的模糊逻辑工具箱对实例变电站的电压无功综合控制设计模糊控制系统。

Reactive power optimization of power system is not only an effective means to ensure power system operation securely and economically, but also one of the most important methods to improve the voltage quality and reduce the transmission loss.

电力系统无功优化是保证电力系统安全、经济运行的一项有效手段，是降低网络损耗、提高电压质量的重要措施。

In electrical Engineering,it is one of the major work that measure the average power and reactive power on symmetric three-phase three-wire circuit.

对称三相三线制电路有功功率和无功功率的测量是电气工程中的主要工作之一。

This model is based on a modified OPF instead of electric dispatch in the traditional spot price theory.

提出一种新的基于最优潮流的有功无功一体化实时电价模型及算法。

The control signals of the PWM rectifier are obtained by comparing the current of AC side with triangular wave (or saw-tooth wave) directly, which can implement the steadiness of the voltage of DC side and unit capacity factor of the system. At the same time, harmonic component of the system is abstracted through Instant Reactive Power Method, which can be smoothed by Integrated Learning Boost Converter Control.

本文采用重复学习Boost变换技术，利用滑模变结构控制技术对单相PWM整流器恒频Boost变换进行了分析，提出将交流侧电流直接与三角波相比较得到开关控制信号的方法，实现直流电压恒定不变及系统单位功率因数；同时，利用瞬时无功功率法分析系统谐波，并在谐波域内使用重复学习的控制方法，结合Boost变换技术，有效滤除系统谐波有功电流。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。