A new method for the positive sequence voltage detection is presented.
提出一种电网电压正序分量的近似计算及实现方法。
A new directional element based on the fault component positive sequence reactance (FCPSR) is presented.
提出了基于故障分量正序电抗的方向元件。
The pulse steering circuit so designed solves fairly well the transition between positive sequence and negative sequence.
所设计的脉冲导向电路较好地解决顺序与逆序互相之间的过渡问题。
In the paper, the reduced single phase short-circuit current equation expressing as positive sequence impi dance only is showed.
文中还提出了低压系统中只用正序阻抗表达的单相短路电流的简化计算公式。
The measured distance of the lump parameter circuit model can be converted to the correspondingly matching positive sequence measured impedance.
根据集中参数线路模型算法的实测距离，换算成与模型匹配的正序测量阻抗。
The zero sequence component and the positive sequence component equations of transmission lines are derived on the basis of telegraph equations.
运用电报方程推导出三线-地耦合传输线零序分量和正序分量传输线方程。
The three phase detecting method closely connects with the Park transform and the result is the positive sequence part of the fundamental frequency.
三相求法与派克变换有很密切的联系，求出的是三相基波正序分量。
Measures, such as the floating of threshold, braking by positive sequence current, driving up the threshold during power swing, etc are suggested to prevent th.
采用浮动门槛、正序电流制动和静稳破坏后提高动作门槛值的方法，来防止系统振荡时误启动。
The transformation of the instantaneous value symmetry component applied, the positive sequence space vector of fault component of the voltage and current can be derived.
应用瞬时值对称分量变换，可提取电压、电流故障分量的正序空间向量。
The proposed method doesn't need hardware synchronization circuit and can perform the calculation of fundamental positive sequence component of the supply voltage in real time.
这种方法不需要硬件同步电路，能实时地计算电源电压中的基波正序分量。
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。
A series ac voltage regulator based on a new fundamental positive sequence calculation method, which is utilized to generate the compensation voltage reference, is introduced in this paper.
针对串联型交流电压调节器，提出了一种新的基波正序计算方法以获取补偿电压的参考信号。
Based on symmetrical component method and linear superposition principle, the additional positive sequence network after fault is established and the matching index on fault point is defined.
该方法首先运用对称分量法和线性叠加原理建立故障后的附加正序网络并且定义了故障点的匹配指标，进而基于该指标运用遍历搜索方法寻找故障点位置。
Considering the imbalance of three phase voltages, a new arithmetic which verifies the generator paralleling based on the synthetic phasor of positive sequence fundamental voltage is proposed.
考虑到三相电压或多或少有些不平衡，提出了一种新的基于正序基波电压合成相量的发电机并网条件核算法。
These disadvantages could be eliminated in three-phase systems if the energy account based on the integral of the active power of the positive sequence component with the fundamental harmonic.
在三相系统中，以正序基波功率的积分作为计量标准，同样可以消除这两方面的不利影响。
A sequence of values indicating positive or negative direction in time, years, months, days, hours, minutes, and seconds.
表示时间正向或逆向的一组值：年、月、日、时、分和秒。
The type of parasequence sets is similar to classic sequence stratigraphy, and the parasequence mainly consists of positive rhythm.
准层序组类型与经典层序地层学中的类型相似，但是其内部各准层序以正韵律为主。
Compared with the previous methods, the Newton-Raphson method is used not only for solving the positive equation, but also the negative and zero sequence equations.
与已有方法相比较，所提方法不仅在正序方程中，而且也在负序和零序方程中采用牛顿法修正方程。
Diophantine equation; Positive integer solution; congruence; Recurrent sequence.
丢番图方程；正整数解；同余；递归序列。
Positive temperature coefficient (PTC) thermistor and triple frequency harmonic filter can reduce zero sequence voltage when a nonlinear resistance is used to prevent ferroresonance.
在非线性电阻消谐方式下，正温度系数(PTC)热敏电阻和三次谐波滤波器可以较好地解决零序电压偏高的问题。
Based on the symmetry component theory, a method of the motor protection is presented by measuring positive, negative and zero sequence current component.
基于对称分量法理论，提出了基于检测正序、负序、零序电流分量的电动机保护方法。
The study of moving object based on video sequence has its positive significance in all areas.
基于视频序列的移动物体提取在各领域有着积极的研究意义。
When zinc electrode discharge in alkaline zinc-manganese dioxide battery, its reaction sequence in macroscopy was from zinc gelled near positive electrode to close to negative current collector.
讨论了碱性锌锰电池负极在放电时宏观上的反应顺序：从锌膏靠近正极部位逐渐进行到负极集流体周围。
Meanwhile, biochemical reaction, coagglutination test, metabolism-inhibition test, polymerase chain reaction (PCR), and DNA sequence assay were employed to identify those positive cultures.
阳性培养物用生化反应、协同凝集试验、代谢抑制试验、聚合酶链反应和DNA测序来加以鉴定。
As to the Deng's transformation, it is proved to be suitable for POL(max) and POL(min) criterion sequence when taking positive value;
对于邓氏灰靶变换，证明了在序列取值于正数范围内时可以作为极大值极性和极小值极性指标列的灰靶变换；
Further, the gene sequence and amino acid sequence for BDV positive product were analyzed to establish the molecular epidemiologic characteristic by drawing phylogenetic tress.
对BDV阳性产物进行基因序列测定、同源性和氨基酸顺序分析，绘制系统发生树，初探bdv感染的分子流行病学特征。
On expressing any positive rational number as sum of different terms of a given subsequence of harmonic sequence, some particular cases are studies.
对于用调和数列的子列表示正有理数的问题，研究了一些特殊情况。
Generalized integrator was used to realize static error free tracking control of positive and negative sequence current under two-phase static coordinate.
并采用广义积分器原理实现对三相电流在两相静止坐标下的控制，实现了正负序电流的无静差跟踪控制。
The positive clones were sequenced and the sequence data were analyzed using Nucleotide BLAST software of NCBI and Expert Protein Analysis System of Swiss Institute of Bioinformatics.
通过互联网对测序获得的核苷酸序列进行同源性分析 ，并预测新基因编码蛋白质的结构与功能。
The positive clones were sequenced and the sequence data were analyzed using Nucleotide BLAST software of NCBI and Expert Protein Analysis System of Swiss Institute of Bioinformatics.
通过互联网对测序获得的核苷酸序列进行同源性分析 ，并预测新基因编码蛋白质的结构与功能。
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