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hvdc     
相关语句
  高压直流输电
    Mathematical Modeling and Simulation Analysis for Voltage Source Converter Based HVDC
    基于电压源换流器的高压直流输电系统数学建模与仿真分析
短句来源
    Measurements and Analysis of Corona Onset Voltage of HVDC Test Line and Ion Current Density at Ground Level
    高压直流输电试验线路的电晕起始电压及地面离子流的测量与分析
短句来源
    Studies an the Flashover Characteristics of Tower Air Clearances for ±500kV HVDC Transmission Lines
    ±500kV高压直流输电线路杆塔空气间隙放电特性的研究
短句来源
    Calculation of Electric Field and Ion Current Density For Bipolar HVDC Line
    高压直流输电线路地面合成场强与离子流密度的计算
短句来源
    Calculation and Analysis of Operating Conditions of MRTB in Gezhouba-Shanghai 500kV HVDC System
    葛—上500kV高压直流输电线路中金属回线转移开关工作条件的计算分析
短句来源
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  直流输电
    Study of Control and Protection Strategies for VSC Based HVDC System
    新型直流输电的控制和保护策略研究
短句来源
    Dynamic Digital Simulation of HVDC Power Transmission System
    直流输电系统的动态数字模拟
短句来源
    BIPOLAR HVDC TRANSMISSION LINE EQUATION AND PARAMETERS
    高压双极直流输电线路方程式及参数
短句来源
    Network Analysis of Harmonics and Filters in Zhou shan HVDC Transmission Engineering
    舟山直流输电工程谐波和滤波的网络分析
短句来源
    A Survey of the Reliability of Thyristor-based HVDC Systems throughout the World during 1972—1983
    1972—1983年全世界可控硅阀直流输电系统的运行分析
短句来源
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  高压直流
    Lightning Performance Analysis and Lightning Protection of HVDC Overhead Lines
    高压直流架空线路的耐雷性能分析与防雷保护
短句来源
    DIGITAL SIMULATION OF HVDC SYSTEMS WITH 12-PULSE CONVERTERS
    12脉波换流器高压直流系统的数字仿真
短句来源
    Sensitivity Analysis of Parameters for Reliability Evaluation in HVDC Systems
    高压直流系统可靠性评估中的参数灵敏度分析
短句来源
    Electric Field Distribution and Product Design of HVDC Cables
    高压直流电缆的电场分布与产品设计
短句来源
    Physical Design of Extinguishign Arc Fashion in HVDC Breakers
    高压直流断路器灭弧方式物理设计
短句来源
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  直流
    Study of Control and Protection Strategies for VSC Based HVDC System
    新型直流输电的控制和保护策略研究
短句来源
    Nonlinear Modal Analysis and Flexible Coordinated Control for HVDC/AC Power Systems
    交/直流互联电力系统的非线性模态分析和柔性协调控制
短句来源
    Dynamic Digital Simulation of HVDC Power Transmission System
    直流输电系统的动态数字模拟
短句来源
    BIPOLAR HVDC TRANSMISSION LINE EQUATION AND PARAMETERS
    高压双极直流输电线路方程式及参数
短句来源
    Network Analysis of Harmonics and Filters in Zhou shan HVDC Transmission Engineering
    舟山直流输电工程谐波和滤波的网络分析
短句来源
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  hvdc
The deleterious effects resulting from the electrolysis of HV porcelain are discussed with particular regard to the insulation requirements of HVDC mercury valves.
      
Simulation of the insulation properties of a HVDC transformer using a hybrid discretization based on finite elements and harmoni
      
The results demonstrate that the best damper may not be installed at the location with the most onerous vibrations but provides satisfactory damping performance on shafts and blades following severe power disturbances in a HVDC link.
      
Due to more various power disturbances occurring in a power system involving a HVDC link, the turbine generator shafts and/or blades are more prone to damage than in general HVAC systems.
      
A New Damper Scheme to Restrict Torsional Torques on the Turbine Generator Shafts and Blades near a HVDC Link
      
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When the converter, used for HVDC transmission, is connected to a weak a.c. power system, the filters and static condensers on its a.c. side also supply a considerable amount of additional commutating current, which is usually neglected in the case of converter connecting to strong power system. Taking into account the effect of this additional commutating current, the commutation process is accelerated, so that in the performance analysis of converters connected to weak system this effect must be considered....

When the converter, used for HVDC transmission, is connected to a weak a.c. power system, the filters and static condensers on its a.c. side also supply a considerable amount of additional commutating current, which is usually neglected in the case of converter connecting to strong power system. Taking into account the effect of this additional commutating current, the commutation process is accelerated, so that in the performance analysis of converters connected to weak system this effect must be considered. In this paper the experimental results obtained on a physical model are presented. The results are analysed in detail. By comparison of the analytical and experimental results, it is revealed that the method here proposed for calculating the performance of the conveterts connected to a weak power system is satisfactory for general design work.

当直流输电的换流器接在弱交流系统运行时,其交流侧的调谐滤波器和无功补偿静电电容器也会提供一部份为数不小的换相电流。但是在换流器运行于强系统情况下这个换相电流分量通常小到可以忽略不计。由于这部份换相电流的作用加速了接于弱系统换流器的换相过程,并使换相角减小。因此在分析和计算它的工况时,如果仍沿用接于强系统的计算方法,而不考虑这部份电流的作用势必引起很大的差错,为了探讨滤波器和静电电容器参与换相过程的作用,在进行原理分析的同时,还利用直流输电动态摸拟系统做了一系列试验。根据分析和试验结果提出了的接于弱系统换流器工况简化计算方法,可用于一般设计计算。

This is a companion paper to a paper of the same title, Part Ⅰ, in which the electric power flow problem is reformulated to account for harmonic signals which arise from nonlinear loads. In this paper, implementation and practical applications are discussed. The problem of initialization of bus voltages (including harmonics) is considered and convergence of the algorithm is assessed from the theoretical viewpoint and from the results of actual studies. The principal content of this paper is two examples both...

This is a companion paper to a paper of the same title, Part Ⅰ, in which the electric power flow problem is reformulated to account for harmonic signals which arise from nonlinear loads. In this paper, implementation and practical applications are discussed. The problem of initialization of bus voltages (including harmonics) is considered and convergence of the algorithm is assessed from the theoretical viewpoint and from the results of actual studies. The principal content of this paper is two examples both containing nonlinear loads (rectifiers).Conclusions and recommendations are made concerning the application of harmonic power flow studies. The salient recommendation is that in the presence of nonlinear loads (especially during light loading) or in systems containing HVDC lines. harmonic signals should not be ignored.

前一篇文章“谐波潮流研究(一)”已将电力潮流问题重新形成公式以计算由非线性负荷引起的谐波分量,本文为其续文.在本文中将讨论其实现和实际应用.文中考虑了母线电压(包括谐波分量)初始值给定问题并从理论观点和实际研究结果评价了算法的收敛性.介绍了包含非线性负荷(整流器)时谐波潮流计算的两个例子. 文中作出了关于谐波潮流应用方面的结论和建议.突出的建议是在出现非线性负荷(特别在轻载期间)或在系统包含直流高压线路的情况下,谐波分量不应忽略.

This paper gives a new method to digitally simulate the transient process of HVDC power systems. The computer program presented is capable of establishing the state equations in a rather sim-plier way. Both the steady and transient state behaviours as well as the performance of various controlling strategies and the problems of dynamic overvoltage of HVDC systems can be simulated by using this method. Some examples of calculation for a real HVDC system are given in the appendix.

本文介绍了一种研究直流输电暂态过程数字模拟的新方法。与以往文献介绍的方法相比,这套程序能以更简便的方法建立状态方程,对直流输电系统的稳态和暂态行为、各种控制方式以及某些动态过电压问题都可用这种新方法进行模拟计算。文中附有几个对实际直流工程问题的模拟算例。

 
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