无功的

The discrete reactive power optimization in power system is studied in this dissertation From the existing mathematical and ...

本文对电力系统及配电系统的离散无功优化问题进行了详细系统的研究，提出了离散无功优化的各种模型与算法。

The equational restrictions are power flow equations with load coefficients, the power of all the nodes increase synchronously.

本文以分岔分析法为理论基础，将电压稳定的裕度指标加入到无功优化中，提出了考虑电压稳定裕度的无功优化模型。

Based on the theory of instantaneous reactive power, the multiple frequency rotate transform theory is put forward. It overcomes the defect of that the theory of instantaneous reactive power can only measure the harmonic total amount. The positive sequence and negative sequence k-multiple frequency rotate coordinate is respectively put forward in detail.

倍频旋转变换理论是基于瞬时无功功率理论提出的，它克服了瞬时无功功率理论测量方法只能测量谐波总量的缺陷，该理论分别针对正序谐波和负序谐波，提出正向和负向倍频旋转坐标，通过k—倍频旋转坐标可将k次谐波分离出来。

The infeasibility degree was introduced into the mathematical model of voltage regulation, which can deal with the constraints of the model. In addition, an improved genetic algorithm was used to solve the voltage regulation problem.

在电压无功调整的数学模型中引入了不可行度概念，用于处理模型中的约束条件，并结合改进遗传机制的遗传算法对系统进行电压无功调整。

A closed-loop detecting circuit of harmonic and reactive current based on instantaneous reactive power theory has been analyzed and used in this APF system. It can achieve the accurate and real-time detection, and make the system stable.

本文将基于瞬时无功功率理论的自适应闭环检测方法应用于有源电力滤波器，使系统在快速、准确检测谐波及无功电流的同时，具有良好的鲁棒性。

When generators and reactive power generator reach their reactive limits, the corresponding rank of the power flow Jacobin will augment simultaneously, and cause the minimum singular value change suddenly, then lose the commensurability to the value before node type change, this affects its linear nature.

当发电机和无功发生设备达到无功限制时，潮流方程相应的雅可比矩阵阶数也将增大，致使奇异值指标发生突然变化，与节点性质转化之前的奇异值失去可比性，将影响其线性性质。

The definition of instantaneous reactive power in sinusoidal circuit is still a pending problem and should be studied further. The authors consider that the theory of instantaneous power should be studied on the basis of the original definitions of instantaneous active and reactive power.

针对研究近一个世纪还没有解决的瞬时无功功率界定与定义的问题，该文认为应从原始瞬时有功功率、瞬时无功功率界定来研究瞬时功率理论。

Transmission of reactive power will load more the lines, which in tern will introduce more reactive power.

这样的无功功率传输将使输电线的无功功率负荷加重。

To ensure the voltage quality and improve the power factor of the oilfield electric network and reduce the power lossalong the wile, in-situ wattless compensation technology is adopted on the electric motor, i.

为保证电网电压质量，提高功率因数，降低线路损耗，可对电动机实行无功就地补偿，即在电动机旁配备适当的低压小型电力电容器装置来补偿电动机的无功功率。

According to the characteristics of reactive power optimization, a mixed algorithm—tabu search genetic algorithm is proposed in this paper.

针对无功优化问题的特点，本文采用了一种应用于电力系统无功优化问题的混合算法一禁忌遗传算法。

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％。