此结果也在不同(相对于线路阻抗)的阻抗值上运行了,包括900欧姆。
Results were also run for different high (relative to the line impedance) impedance values, including 900 ohms.
利用分段点处电流、电压应用解微分方程算法即可较精确地计算出线路阻抗。
The differential equation algorithm can accurately calculate the impedance from the splitting point to the fault point.
克服了线路阻抗变化对系统均流精度的影响。实验结果表明,该方法能较好地实现逆变模块的功率均分,模块间输出电流偏差小于1%。
The experimental results show the proposed method can share the output power quickly, and the current-sharing error is less than 1%.
有低的差动输出阻抗绝大多数的线路驱动器,同时也固有地有低的共模输出阻抗,这样,低阻抗桥臂几乎无一例外地位于驱动器一侧。
Most line drivers with low differential output impedance will also have inherently low common-mode output impedances, so the low impedance arms of the bridge are almost always at the driver.
由于阻抗法易受过渡电阻、互感器误差、线路结构不对称等因素的影响,所以测距精度不高。
Because the impedance fault location method is easily influenced by the factor such as fault resistance, transformer error and asymmetrical line configuration, the fault location accuracy is lower.
阻抗特性是电子元件在电子线路应用中一个重要的参数。
Impedance characteristic is an important parameter of electronic components using in electronic circuitry.
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 measured distance of the lump parameter circuit model can be converted to the correspondingly matching positive sequence measured impedance.
测定了这种传感器在不同湿度下的复数阻抗,为测量线路设计中的参数选择提供了必要的依据。
The complex impedance of the sensor was determined under various humidities to provide one requirement for selecting of parameters in the design of measuring circuit.
提出了一种基于阻抗相对变化的高压线路保护选相新原理,用作振荡期间的选相元件。
Based on the relative variation of impedance during power swing, a novel phase selector for high voltage transmission lines is proposed.
该方式广泛适用于线路的阻抗测试,能迅速测量出电缆的断线、混线、浸水等各种故障的具体地点。
It is popular used in impedance test of line that will detect and find the exact location of faults i. e. of broken, mixture and soakage of wires.
通过对比电缆整定的单位千米阻抗值和电压电流值,来确定线路上的故障点。
Power lines have set impedance per kilometre and using this value and comparing voltage and current the distance to a fault can be determined.
分析表明,线路末端三相故障时,线路首端的测量阻抗不与故障距离成正比。
The analysis shows that the measured impedance at the head of the line is not proportional to the fault distance when a three-phase fault occurs at the end of the line.
本文在声阻法检测器等效线路的基础上,提供一种测量检测阻抗的简捷方法。
A simple method is devised for measuring the detection impedance in the acoustic impedance method of detection of unbonds and is based on an equivalent circuit of the detector.
在计及并联线路互感的情况下,提出了一种节点阻抗矩阵修正计算的通用算法。
Considering the mutual flux linkage of parallel lines, this paper presents a general method for update computation of the impedance matrix.
架空电力线路与地下通信线路互阻抗的计算结果验证了论文方法的正确性和高效性。
The validity of the method is proved by calculating the mutual impedance between overhead power lines and underground telecommunication lines.
本文提出了受控电源视在阻抗的概念和电子线路分析中的视在阻抗法。
The concept of apparent impedance of controlled source and the apparent impedance method for electronic circuit analysis are introduced in this paper.
为了超高压输电线路防雷计算的需要,建立了新的杆塔模型,即多波阻抗模型。
In order to make calculation of the lightning protection on ultra high voltage (UHV) line, a new tower model, namely multi-wave impedance model was constructed.
偏移特性阻抗继电器常用于小电流或大电流接地系统中作为输电线路距离保护的测量元件。
LZ-22 partial impedance relay usually used as measuring element on distance protection of the line at small or big current power system.
高压电缆的金属护套交叉互联导致行波在多个波阻抗不连续点产生了复杂的折反射行为,这对高压电缆线路的行波故障测距产生很大的影响。
The reflection and refraction of traveling wave are quite complicated at the sheath-crossing point of high voltage power cable, due to its remarkably noncontinuous surge impedance.
Robert使得时域反射仪这一课题不再神秘,它能够帮助您检测,测量以及找出任何阻抗不匹配的输电线路。
Detect and measure impedance Mismatches Robert demystifies the topic of time domain reflectometry, which enables you to detect, measure, and locate any impedance mismatch in a transmission line.
印刷电路板上加绝缘环,消除了线路板绝缘电阻对放大电路输入阻抗的影响。
And insulating ring technology is adopted to further improve input impedance influenced by insulating resistance of printed circuit board.
对于不同长度的电缆线路其金属护套的接地方式亦不尽相同,从而对电缆线路参数,尤其是对零序阻抗将产生较大的影响。
The earthing method of the metal sheath varies somewhat in different cable lengths, which affects greatly line parameters, especially zero sequence impedance.
该方法是将互感线路的伏安特性方程转化为积分形式,并采用了最小二乘法求解方程组,同时得出各线路的零序自阻抗及线路间的零序互阻抗。
The new method turned the volt-ampere characteristic equation of transmission lines into an integral form, then used least square method to solve the equations and got the zero-sequence parameters.
同时还指出平行线路条数变化,零序阻抗均需重新测试。
In the meanwhile it is pointed out that the quantity change of the parallel line and zero-sequence impedance must be retested.
第二个影响是线路电容电流流过电源,阻抗引起的电压升高。 收藏。
The second effect is the rise in voltage resulting from the capacitive current of the line flowing through the source (generator) impedance.
TCSC的动态基频阻抗特性分析对研究含TCSC线路上的线路保护的特性具有重要意义。
The dynamic power frequency impedance of TCSC is of great importance to the analysis of protective relaying characteristics on transmission line with TCSC.
天线匹配指定频率范围内,调整阻抗使得天线的输入阻抗等于或大致等于其发射线路特性阻抗的过程。
The process of adjusting impedance so that the input impedance of an antenna equals or approximates the characteristic impedance of its transmission line over a specified range of frequencies.
对四边形和方向圆特性阻抗继电器躲线路最大潮流的能力进行了详细分析,提出了距离保护负荷限制电阻的整定原则和整定方法,并给出了整定建议值。
It puts forward the setting principle and method of load limiting resistor of backup distance protection and gives the propositional setting value of load limiting resistor.
EMTDC仿真试验结果表明该方法可以准确地实现单相故障选线,并验证了文章对输电线路零序输入阻抗相频特性分析的正确性。
The EMTDC simulations indicate that the method can find out the faulty line correctly and prove that the analysis of the angle-frequency characteristic of zero impedance of the line is correct.
EMTDC仿真试验结果表明该方法可以准确地实现单相故障选线,并验证了文章对输电线路零序输入阻抗相频特性分析的正确性。
The EMTDC simulations indicate that the method can find out the faulty line correctly and prove that the analysis of the angle-frequency characteristic of zero impedance of the line is correct.
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