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double-circuit     
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  双回
     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
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     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
     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
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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
     A method of fault pattern recognition on same-tower double-circuit lines using Kohonen neural network
     基于Kohonen网络的同杆双回线故障模式识别方法
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
     Study of Protective Relay on Series Capacitor Compensated Lines & Study of Protective Relay and Reclosure on Double-circuit Lines on the Same Pole
     串补线路继电保护的研究与同杆双回线继电保护及重合闸的研究
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  双回路
     4-bundled,ACSR-720/50 large-section conductor and double-circuit towers were used in Huadu-Boluo 500 kV transmission line project.
     500kV花都—博罗输电线路工程,采用ACSR-720/50大截面导线,四分裂,同塔双回路
短句来源
     Fault identification in double-circuit on same pole using neural network
     基于径向基网络的同杆双回路故障类型判定
短句来源
     All simulation results show that the neural network is well suited for double-circuit.
     仿真结果表明该网络能够进行同杆双回路故障判定。
短句来源
     Improvement on Double-Circuit Supply of High Power Transformers' Cooler Control Cabinets
     大型变压器冷却控制箱双回路电源的改进
短句来源
     According to the on-line fouling resistance monitoring technique and comparison between domestic traditional dynamic simulation experimental methods and foreign advanced fouling monitoring equipment, we designed a new double-tube and double-circuit on-line fouling resistance monitoring equipment and developed corresponding system managing software by Delphi5.0. In order to win the versatility and reliability of the device, all design requirements of equipment such as multi-function, adaptability of operating mode and reliability were fulfilled.
     本文基于污垢热阻在线监测技术,通过对国内传统动态模拟试验方法及国外先进污垢监测设备的比较分析,设计了一种双管双回路新型污垢特性在线监测装置,以面向对象的Delphi5.0语言为工具开发了配套的系统管理软件。 设计中充分考虑了系统的通用性、可靠性要求,在装置的功能多样性、工况适应性和可靠性等方面作了诸多努力,基本实现了全部设计要求。
短句来源
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  “double-circuit”译为未确定词的双语例句
     Relay Protection And Reclosure For 220-500kV Double-circuit Lines on One Pole
     220~500kV同杆双目继电保护及重合闸
短句来源
     The main electrical wiring of the Xiangtan Power Plant 2×600 MW supercritical unit has such characteristics as unit connection for generator-transformer set,generator outlet equipped with GCB,inter-bridge connected 500 kV double-circuit outlet that can be modified to 3/2 switch connection in the future;
     湘潭电厂二期扩建2×600 MW超临界机组,其电气主接线具有突出的特点:两发电机-变压器组为单元接线,发电机出口装有CCB,2回500kV出线为内桥接线,将来可以过渡到3/2开关接线;
短句来源
     Double-circuit Braking System of Farm Transporter
     农用运输车的双管路制动系统
短句来源
     Learning from the designing methods of other nuclear power projects,a new design for DC power supply system is put forward,which provides a safe and reliable double-circuit power supply for DCS with consideration of the characteristics of the service power system in nuclear power plants.
     借鉴其他核电项目的设计思路,提出了一种新的直流系统设计方案,能够结合核电厂厂用电系统的特点,为DCS提供安全、可靠的双路供电电源。
短句来源
     The presented algorithm maintains high accuracy for double-circuit transmission lines and the locating equation leads to the unique solution. The simulation results indicate that the maximal error is less than 0.05% theoretically.
     该算法理论分析简单,迭代求解测距方程不存在伪根问题,电磁暂态计算程序ATP仿真结果表明,本算法测距精度达到了0.05%.
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  double-circuit
Chaotic dynamics of a nonautonomous double-circuit oscillator
      
Once the whole work will be over, the pilot tunnel will be used as a service gallery (drainage of water) where a double-circuit GIL can efficiently be installed.
      
The paper deals with the possibility of installing a double-circuit gas insulated transmission line (GIL) in the pilot tunnel of the new planned railway galleries Fortezza-Innsbruck.
      
New models are presented for one-phase earth short circuits of a double-circuit high-voltage three-phase power transmission line (DHTT) and appropriate integration methods as well as the relevant computation scheme are described.
      
A real-time digital simulation model of the electromagnetic transients of one phase short circuit of double-circuit high-voltage
      
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In this paper the propagation of pulse wave on and the mutual coupling between conductors of a multi-conductor transmission system are analysed from the basic voltage and current equations. It is found from the analysis that on a completely transposed double-circuit three-phase system there will exist four pulse waves of different velocities originated from a system disturbance, and accordingly there will be four different values of the characteristic impedance. With these relations obtained, some peculiar...

In this paper the propagation of pulse wave on and the mutual coupling between conductors of a multi-conductor transmission system are analysed from the basic voltage and current equations. It is found from the analysis that on a completely transposed double-circuit three-phase system there will exist four pulse waves of different velocities originated from a system disturbance, and accordingly there will be four different values of the characteristic impedance. With these relations obtained, some peculiar phenomena of pulse wave propagation on lines can be explained, and the distortion, reflection, and refraction, etc., of waves can be computed according to given boundary conditions, thus giving theoretical support to practical measurements on lines. Examples are given to illustrate the method of analysis.

本文从电压和电流的基本方程出发,分析脉冲波在多导线传输系统的传播现象和多导线传输系统导线间的相互耦合作用。分析结果说明,在一轮换的双迴三相输电系统里,系统扰动将会产生四种不同速度的脉冲波,对这四种不同速度的脉冲波将有四个不同的特性阻抗。应用这些关系,将能解释线路上脉冲波传播的某些特殊现象,和按照给定的边际条件计算出波的畸变、反射和折射等等,从而对线路实测结果提供理论依据。文中举例说明这分析方法。 这脉冲波传播的理论分析被进一步推广应用到稳态交流运行情况,并推导出双迴输电线的等效电路。

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...

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。

A statistical method for determining the flashover rate of an extra-high transmission-line tower due to a direct lightning stroke is introduced. This method is based on the following considerations, (a) the effect of tower height on the distribution of lightning current amplitude according to the "A—W" model; (b) the volt-time characteristic of the insulator-string and its statistic distribution} and (c) the allowable current amplitude as determined from the rate-ofrise curve for flashover. This methcd can also...

A statistical method for determining the flashover rate of an extra-high transmission-line tower due to a direct lightning stroke is introduced. This method is based on the following considerations, (a) the effect of tower height on the distribution of lightning current amplitude according to the "A—W" model; (b) the volt-time characteristic of the insulator-string and its statistic distribution} and (c) the allowable current amplitude as determined from the rate-ofrise curve for flashover. This methcd can also be used to determine the flashover rate of single or double circuits when a direct lightning stroke hits the tower.

本文根据“A—W”模型求得特高杆塔雷击次数和雷电流幅值概率分布密度;在模似试验的基础上求出特高杆塔反击耐雷水平及其危险波曲线;并根据概率统计方法求出单回路及双回路特高杆塔的反击闪络率。

 
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