1) overhead transmission line
架空输电导线
1.
Study on performance of the resin matrix of fiber reinforced composites core in overhead transmission line
架空输电导线纤维增强复合芯用基体树脂的性能研究
2.
The composition and working principles of a device of anti - oscillation with disturbing flow were introduced,which has installation of anti - oscillation for ice coating of overhead transmission line with pre .
架空输电导线的覆冰舞动是一种低频、大振幅的自激振动,严重威胁着架空输电线路的安全。
3.
Therefore,the wire in the clamping region is prone to be damaged because of aeolian vibration of overhead transmission lines.
受架空输电导线拉力的影响,导线在夹持区易出现应力集中现象,在微风振动作用下,夹持区易产生疲劳断股破坏。
2) transmission conductor
架空输电线
1.
The vertical, steady-state, monofrequent aero-vibration of a single 1000kV UHV transmission conductor with a Stockbridge-type damper attached was researched by the finite element method (FEM) differing from the traditional energy balance method (EBM).
为了分析安装防振锤的1000kV特高压架空输电线路的微风振动强度,研究了利用有别于传统能量平衡法(EBM)的有限元方法(FEM)分析微风振动的关键技术。
2.
Differing from the traditional energy balance method(EBM)the finite element method(FEM)is adopted to analyze the aero-vibration of 1000kV UHV transmission conductors.
对于1000kV特高压架空输电线路,有别于传统的能量平衡法(EBM),研究了利用有限元方法(FEM)分析微风振动的关键技术。
3) overhead transmission line
架空输电线
1.
After establishing mechanical models of overhead transmission line and damper interactions,formula for damper power consumption calculation can be derived,with consideration of installed clamper position,transmission Line tension and anti-bending rigidity based on principles of vibratory wave transmission and damper mechanical impedance.
在建立架空输电线与防振锤互相作用的力学模型后,基于振动波的传播原理和防振锤的机械阻抗,推导出能够考虑防振锤安装位置、输电线张力和输电线抗弯刚度的防振锤耗能功率计算公式。
4) overhead transmission lines
架空输电线
1.
Wave parameter measuring method for overhead transmission lines based on DSP processor;
基于DSP处理器的架空输电线波参数测试方法
2.
The principle and method for the measurement of both the zero and positive sequence parameters of the overhead transmission lines under the conditions of open circuit and short circuit at the end terminal are also given.
提出了在架空输电线终端开路和短路的条件下，应用起端电压相量和电流相量，确定架空输电线零序波参数和正序波参数的原理和方法，通过在实际线路上的测试实验表明，该方法有效。
5) aerial conductor
架空输电线
1.
Database Management System of Aerial Conductor;
架空输电线数据库管理系统
2.
Dampers are widely used in aerial conductors to reduce the severity of aeolian vibration and the accompanying fatigue damage to conductor strands and fittings.
防振锤被广泛用于架空输电线以耗散微风振动的能量 ,减轻微风振动的强度 ,保护架空输电线免受疲劳损害。
6) over-head transmission line
架空输电线
1.
The breeze vibrations on over-head transmission line was one of the major harmfulness about the vibration on transmission line, which threat the safety of the transmission line seriously, and more and more professional and technical workers began to study on it.
微风振动是架空输电线路主要的风振危害之一,对输电工程的安全造成严重威胁,所以越来越引起广大专业技术工作者的重视。
补充资料：输电线路导线截面选择
输电线路导线截面选择
selection of conductor cross-section of transmission line
但由于超高压输电线路导线的表面电场强度均控制在电晕临界电场强度的80%以上，接近于电晕临界电场强度，而新架设导线表面的局部污损又导致导线电晕临界电压降低，故运行初期和在雨天情况下仍难免出现电晕。相导线上产生电晕放电时，要伴随着产生连续重复性的电流脉冲，这些电流脉冲产生频率为0.15~100 MHz的振荡电磁波，致使在电晕导线上产生高频电磁辐射，从而在导线周围形成一高频电场，对无线电收音机和发射天线产生干扰。同时这种振荡电磁波还沿导线传播，干扰高频通道的正常工作. 由电晕导线产生的无线电干扰电平L-20 19(EZ/E，)，dB。其中EZ为测点电场强度，拌V/m;E，为参考电场强度，拌V/m。工程上取E，一1拌V/m为基准，故L~20 lgEZ。若EZ~El~1拜V/m，则测点的无线电干扰电平为零。 从高压、超高压架空输电线路下测得的无线电干扰电平L(dB)随频率f(MH:)的增大而减弱，其关系曲线称为频谱特性，如图2所示。由频谱特性看出，频率在0.15~1.0 MH:范围内的干扰电平最大;雨天的干扰电平是各种气候中最大的。另外，随着海拔高度的增大，相对空气密度减小，干扰电平也增大。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条