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hvdc     
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  高压直流输电
     Introduction of±800 kV HVDC Transmission Standards System
     ±800 kV特高压直流输电标准体系的建立
短句来源
     MATLAB/Simulink-Based Simulation Study on HVDC Power Transmission System
     基于MATLAB/Simulink的高压直流输电系统仿真研究
短句来源
     Application of MACH2 System in HVDC Transmission Project
     MACH2系统在高压直流输电中的应用
短句来源
     A Brief Introduction to ±500kV HVDC Transmission Project from the Three Gorges to Changzhou
     三峡至常州±500kV高压直流输电工程简介
短句来源
     Study of HVDC fuzzy neural converter controller based on MATLAB
     基于MATLAB的模糊神经网络高压直流输电换流控制器的研究
短句来源
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  直流输电
     The Development and Application of HVDC Light Technology
     轻型直流输电(HVDC Light)技术的发展与应用
短句来源
     Application of NETOMAC on HVDC System Simulation
     NETOMAC在直流输电系统仿真研究中的应用
短句来源
     R&D of Converter Transformer for ±800 kV HVDC Power Transmission Project
     ±800 kV直流输电工程用换流变压器的研发
短句来源
     HVDC Light-a New Generation of HVDC Technology
     轻型直流输电——新一代HVDC技术
     This article analyzes the HVDC technology base on harmonics filter, shunt capacitor bank, thyristor controlled series capacitor (TCSC), and mainly analyzes the theory of a new power compensation technology, which is called capacitor commutated converters (CCC).
     本文对直流输电用传统的补偿方式滤波器(filter)加并联电容器组(shunt capacitor bank)、晶闸管控制串联补偿技术(Thyristor controlled Series Capacitor简称TCSC)、以及一种新的补偿技术即换流电容器装置(Capacitor commutated converters,简称CCC)进行了分析。
短句来源
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  高压直流
     Discussion on Measuring Configuration of ±800 kV Ultra HVDC System Protection
     ±800 kV特高压直流保护阀组区测量点配置的探讨
短句来源
     Eliminating harmonics is one of the key technologies of High-Voltage Direct Current (HVDC) transmission systems.
     谐波治理是高压直流(High Voltage Direct Current,HVDC)系统的关键技术之一。
短句来源
     A 600kV HVDC Generator Controlled by Microcomputer
     微机控制600kV高压直流发生器的研制
短句来源
     Research on DC/DC Converter for HVDC Power System
     高压直流电源系统中DC/DC变换器的研究
短句来源
     Design and Research on 18kW HVDC Induction Starter/Generator System
     18kW异步电机高压直流起动发电系统设计与实现
短句来源
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  直流
     The Development and Application of HVDC Light Technology
     轻型直流输电(HVDC Light)技术的发展与应用
短句来源
     Application of NETOMAC on HVDC System Simulation
     NETOMAC在直流输电系统仿真研究中的应用
短句来源
     Study on Overvoltage Protection and Insulation Coordination for ±800kV HVDC Transmission System
     ±800kV直流系统过电压保护和绝缘配合研究
短句来源
     Fauft Analysis for ±500 kV GE-NAN HVDC Link in 1991
     1991年±500kV葛南直流输电线故障统计分析
短句来源
     R&D of Converter Transformer for ±800 kV HVDC Power Transmission Project
     ±800 kV直流输电工程用换流变压器的研发
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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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