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double-circuit transmission
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  同杆双回
     Analysis on the Lightning Protection Performance of 500 kV Double-circuit Transmission Line
     500kV同杆双回输电线路耐雷性能分析
短句来源
     CALCULATION AND ANALYSIS OF THE LIGHTNING PROTECTION PERFORMANCE OF BACK STRIKING FOR 500 kV DOUBLE-CIRCUIT TRANSMISSION LINE
     同杆双回交流500kV输电线路反击耐雷性能的计算及分析
短句来源
     The Study of Relay Protection for 500kV Honggou-Longwang One Tower with Double-Circuit Transmission Line
     500kV洪龙同杆双回线继电保护的研究
短句来源
     Research on the Lightning Protection Performance of Back Striking for 500kV Double-circuit Transmission Line
     500kV同杆双回线路雷电反击性能的研究
短句来源
     Study on the Effect of Wind Speed to the Lightning Protection Performance of Shielding Failure for 500 kV Double-Circuit Transmission Line
     风速对500kV同杆双回线路绕击耐雷的影响
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  “double-circuit transmission”译为未确定词的双语例句
     Analysis and Calculation on Induction Voltage of Double-Circuit Transmission
     同塔双回输电线路感应电压的计算与分析
短句来源
     Study on Conductor Selection of the 750 kV Double-circuit Transmission Tower
     750kV同塔双回线路导线选择研究
短句来源
     The Test and Analysis on Electric Field Distribution for 500 kV Double-circuit Transmission Line
     500kV同塔双回线路电场分布试验与分析
短句来源
     Since the coupling double-circuit transmission lines may be decomposed into decoupling the same directional component mode net and the circumfluent component mode net, the analysis demonstrates that the positive and negative sequence current distribution coefficient in the same directional component mode net coincides with that in the circumfluence component mode net, which motivates to propose a novel approach of fault component extraction.
     该方法在平行双回线路的六序故障分量理论和单回线不对称故障复合序网图的基础上,根据同向网正、负序电流分布系数相等和反向网正、负序电流分布系数相等的特点,用正、负序电流反向量和负序电流同向量间接求得正序电流同向量的故障分量,进而合成得到每回线各相电流的故障分量.
短句来源
     Research on Inductive Voltage and Inductive Current of 500 kV Double-circuit Transmission Line
     500 kV同塔双回线路感应电压、电流的研究
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  相似匹配句对
     Calculation of the induction voltage on double circuit transmission lines
     同杆并架双回输电线路感应电压的计算
短句来源
     Analysis and Calculation on Induction Voltage of Double-Circuit Transmission
     同塔双回输电线路感应电压的计算与分析
短句来源
     Lightning Transient Simulation of Double Circuit Transmission Lines
     耦合双回线任意点雷击的电磁暂态仿真
短句来源
     Studies on Lightning Performance of EHV Double Circuit Transmission Lines
     超高压双回并架输电线路防雷性能的研究
短句来源
     Study on Double Clutch Transmission
     双离合器式自动变速器的研究
短句来源
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An exact mathematical model for the calculation of electrical quantities of single-tower double circuit transmission system is proposed in this paper. The model can be used to investigate the rational arrangement of the six phase-conductors of the double circuit; the reasonable way of transposition of conductors, the estimation of the secondary arc current and its compensation methods ; the protective relaying scheme suitable for multi-phase reclosing, etc. This mathematical model is more flexible and...

An exact mathematical model for the calculation of electrical quantities of single-tower double circuit transmission system is proposed in this paper. The model can be used to investigate the rational arrangement of the six phase-conductors of the double circuit; the reasonable way of transposition of conductors, the estimation of the secondary arc current and its compensation methods ; the protective relaying scheme suitable for multi-phase reclosing, etc. This mathematical model is more flexible and convenient as compared with the cascade type structure of A, B, C, D. For the formation of the nodal impedance matrix, an algorithm using partial 6 x 6 matrix, representing the six phases of the double circuit arrangement respectively, is proposed. Owing to the fact that the mutuals between phases are contained implicitly inside the 6 x 6 matrix, so that this algorithm is much more simpler than the conventional algorithm. Thus, the program of calculation is simplified and computing time is saved.

本文提出了计算并架双回路输电系统电量的精确数学模型。可以用它来研究:双回路六线相别的合理排列;双回路合理的换位方式;平行线路的潜供电流及其补偿方法;双回路采用多相重合闸时的选相元件和继电保护方式等等问题。这个数学模型较之用ABCD传递阵方法构成的数学模型使用起来灵活方便。在形成节点阻抗矩阵方面,提出了六线成组追加的方法,由于在这种方法中,互感采取了隐含的形式,所以比常用的支路追加方法要简单得多,从而简化了计算程序,节约了机时。

In this paper, the various states of double-circuit transmission lines with uniform mutual inductance, which are often encountered in clculation of faulted power systems (for example douole-circuit transmission lines with mutual inductance coupling being removed or added simultaneously, one of them being added or removed, both terminals for one of them being connected to the earth under reparation, any point being faulted on any one of the lines, and one of the lines being opened at one of its terminals),...

In this paper, the various states of double-circuit transmission lines with uniform mutual inductance, which are often encountered in clculation of faulted power systems (for example douole-circuit transmission lines with mutual inductance coupling being removed or added simultaneously, one of them being added or removed, both terminals for one of them being connected to the earth under reparation, any point being faulted on any one of the lines, and one of the lines being opened at one of its terminals), are transformed respectively into an equivatlent circuit without mutually coupled branches. The changes in each state can be transformed into changes of its equivalent circuit parameters and/or a new bus which appears on a branch of its equivalent circuit. The Z'-Bus matrix after these line changes can be found directly from branch impedance data of mutually

本文将电力系统故障计算中常见的两回并联的均匀互感线路的各种状态(两回并联互感线路同时接入网络或从网络断开,其中任一回线的接入、断开、检修时两端接地,任一回线上的任意点发生故障,任一回线的一端断开),分别处理为等效的无互感电路,把互感线路状态的变化变为其等效电路阻抗参数的变化或等效电路支路上出现的新节点,利用网络增接无互感链支的修正算法与支路上任意节点阻抗元素的算法,直接从互感线路的阻抗参数和状态变化前的网络节点阻抗矩阵z,可迅速得出状态变化后的网络节点阻抗矩阵Z'。本文所提出的算法具有统一的计算公式,较现有其它方法简便,计算速度快,简化了互感支路电流的计算。本文给有算例。

Double-circuit transmission lines on same poles call for relay protection of high performance, for the misoperation of a distance relay may cause unnecessary three phase trips on both lines in case of simultaneous single phase faults on different phases.This paper analyzes the above problem and proposes a new scheme of uc-based distance protection which can selectively trip the fault phases under any complex simultaneous faults.This new device has been tested repeatedly on a computer simulator system....

Double-circuit transmission lines on same poles call for relay protection of high performance, for the misoperation of a distance relay may cause unnecessary three phase trips on both lines in case of simultaneous single phase faults on different phases.This paper analyzes the above problem and proposes a new scheme of uc-based distance protection which can selectively trip the fault phases under any complex simultaneous faults.This new device has been tested repeatedly on a computer simulator system. Test results are given in the paper. It can be seen that the response is fast and reliable.

超高压同杆并架双回线对继电保护提出了更高的要求。由于保护的误动作,在双回线上同时发生的两个异名相的单相接地故障会导致两回线路均被不必要地切除,当该平行双回线构成电源与重要负荷之间的唯一连接时,上述保护的误动作尤其会造成严重的后果。本文剖析了上述问题,并提出一个新型计算机距离保护的方案,它能在任何复杂的跨线故障情况下安全地只切除故障相。该方案经受过计算机仿真系统上的反复试验,保护的动作行为表明,这套用于平行双回线的计算机距离保护具有高速、可靠的性能。

 
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