片语

negative-sequence influence负序影响

negative e sequence负序

negative phase sequence component负序分量

complete negative information sequence[计]

negative phase sequence resistance负相序电阻

negative phase sequence reactance负相序电抗

negative-sequence currents负序电流

negative-sequence detecting负序检测

negative inversion sequence负反转层序

英汉例句

• the practical examples are given to analyze and illustrate the effect of the harmonics and negative sequence on large hydro generators.

  通过实例计算，分析和说明了电力系统谐波和负序对大型水轮发电机的影响。

• the scheme includes the transverse differential protection, the directional relay action on negative sequence power of fault component and the incomplete differential protection.

  该方案包括了横差保护、故障分量负序功率方向保护和不完全纵差保护的综合应用。

• based on the analysis of main fault types of lv(low voltage) flameproof motor, the negative sequence protection principle is proposed for its asymmetric short circuit fault and open phase fault.

  通过分析低压隔爆电动机的主要故障类型，针对不对称性短路故障和断相故障提出了采用负序保护原理进行保护的方案。

• the microprocessor based negative sequence distance relay is based on sw and functions properly without the influence of the power swing.

  而微机负序距离继电器由软件实现，只需增加简单的辅助判据，就可以完全不受振蕩的影响而正确动作。

• at present, low power factor, abundant harmonics and negative sequence are the three main characters of electrical railway traction load.

  功率因数低、谐波含量大和不对称性是现代电力牵引负荷的三大技术特点。

• the characteristics of arc furnace are low voltage, big current and nonlinear load. much negative sequence current is produced during running. as a result, the power net is unstable.

  电弧炉具有低电压、大电流而且负荷非线性的特点，在其运行过程中产生大量的负序电流，导致电网不稳定。

• for the power quality control and relay protection, it is very important of rapid, correct and practical detection of the negative sequence fundamental current.

  快速、準确、实用的负序基波电流检测方法对于电能质量监测与控制、继电保护等具有极其重要的意义。

• over current protection and negative sequence current protection are adopted to realize remote back-up protection.

  为实现远后备保护功能，应配置过电流保护和负序电流保护。

• in order to reject the zero sequence and negative sequence disturbance due to unbalanced load, a solution using two-stage four-leg matrix converter based on carrier modulation strategy was proposed.

  为了抑制不平衡负载中的零、负序扰动，提出一种基于载波调制的双级四脚矩阵变换器解决方案；为了提高功率变换系统的综合性能，提出一种基于最优马尔可夫链的随机载波四脚矩阵变换器调制策略。

• zero-sequence current criterion, negative sequence current criterion and phase current variation can be used to improve the performance of breaker failure protection for acf sub-bank.

  针对单纯采用相电流判据的不足之处，本文提出增加零序电流、负序电流及电流变化量判据，以有效地避免保护误动或者拒动。

• two types of digital negative sequence strainer using vector method and sampling method are researched in this paper.

  本文对向量法和采样点计算法两种数字式负序滤过器进行研究。

• an unbalanced control strategy of feed-forward control for negative sequence voltage is also carried out to suppress converter overcurrent caused by negative voltage in order to make d-statcom safe.

  提出一种负序电压前馈控制的不对称控制策略，抑制了d-statcom因负序电压分量造成的过流，保障了装置的安全可靠运行。

• in typical six-phase transmission system, half positive sequence, half zero sequence and half negative sequence fault components are independent of the variance of system impedance.

  在典型的六相输电系统中，半正序、半零序和半负序故障分量不受系统阻抗变化的影响。

• the performance of negative sequence directional element widely used in conventional transmission line protection may be affected when it is used in the double transmission lines on the same tower.

  由于同桿双回线自身的特殊性，使得在常规线路保护中有着广泛应用的负序方向元件的性能受到影响。

• the harmful effects brought by reactive power, harmonics and negative sequence usually be evaluated on some sensitive power system nodes and be comprehensive solved in the traction power system.

  无功、负序和谐波的不良影响需要在电力系统进行评估，在牵引供电系统中采取技术措施以期综合解决。

• experimental results prove the proposed control method can compensate the harmonic, negative sequence and zero sequence current components in the three phase four wire.

  实验结果表明，该装置可对三相四线制系统中的谐波、负序、零序等电流分量进行补偿。

• this control principle can improve the control of power quality and effectively compensate the harmonic currents at load side, reactive power and negative sequence current.

  该控制方法能改善系统电能质量的调节，有效地补偿负荷侧谐波电流、无功功率和负序电流。

• larger system voltage unbalance degree causes larger capacitor voltage pulsation and negative sequence current.

  不对称度的增加将进一步增大电容电压的脉动和负序电流的大小。

• this paper studies the negative sequence directional protection (nsdp) as the primary protection of series compensated uhv transmission line.

  文中对带串补的特高压线路采用负序方向高频保护作为主保护方式进行了研究。

• based on the arithmetic of differential protection and simulation technique, this paper analyses the influence of the negative sequence to power system.

  在结合微机差动保护装置算法及仿真建模的基础上，分析了负相序对差动保护的影响，并给出了相应的处理方法。

• the results from calculation and simulation show that the proposed method can effectively restrain the negative sequence voltage and current caused by unbalanced parameters of transmission line.

  计算分析结果表明，该方法能够有效抑制由线路参数不对称产生的负序电流和电压。

• the design of negative sequence protection is mainly introduced with seriously unbalanced power supply voltage fault, open phase fault and two-phase short circuit fault.

  从电源电压严重不平衡故障、断相故障和两相短路故障三方面介绍了负序保护方案设计；

• arc furnace is a typical unbalanced impact load. it pours a great deal of negative sequence component to power system, so measures shou ld be taken to compensate the arc furnace load.

  电弧炉是一种严重的不对称沖击负载，它将产生大量的负序分量而污染电网，所以需要对其进行平衡化补偿。

• the concept of a new- style and high- precision fault component, synthetic negative sequence vector snsv is proposed in the paper.

  文中提出一种新型的、高精度的故障分量——综合负序矢量的概念 ，并给出综合三相负序分量的实时算法。

• a method for analysis of rotor negative sequence eddy current field were presented by using the complex surface impedance concept.

  利用复数表面阻抗的概念给出了发电机转子负序涡流场二维分析与计算方法，在此基础上，编制了相应的计算程序。

• with the substantial growth of power electronic devices and unbalanced loads in power systems, the outcoming harmonics and negative sequence endanger the running safety of the generators seriously.

  随着电力系统中电力电子装置以及不平衡负载大量增加，谐波和负序污染日趋严重，它们对发电机的运行安全带来危害。