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hvdc系统
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  hvdc system
     Neural Network Based Fault Diagnosis in HVDC System
     基于神经网络的HVDC系统故障诊断
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     Influence Analysis of Series Capacitors on HVDC System with CCC
     CCC的补偿度对HVDC系统的影响分析
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     This paper presents a novel vulnerability assessment approach for HVDC system security analysis based on models combination and risk theory.
     针对传统的HVDC系统安全性评估方法不能满足系统规模扩大和电力市场需求的问题,提出了基于模型组合与风险理论的HVDC系统脆弱性评估方法。
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     Performance Characteristics Analysis for HVDC System Based on CCC
     基于CCC的HVDC系统运行特性分析
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     Application of New Wind Generator and HVDC System in Wind Farm
     新型风力发电机与HVDC系统在风场中的应用
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  “hvdc系统”译为未确定词的双语例句
     Control Design for VSC-HVDC Supplying Passive Network
     向无源网络供电的VSC-HVDC系统的控制器设计
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     SIMULATION STUDY OF VSC-HVDC SYSTEM CONNECTED TO PASSIVE NETWORK
     向无源网络供电的VSC–HVDC系统仿真研究
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     A NONLINEAR OUTPUT-TRACKED CONTROLLER FOR HVDC SYSTEMS BASED ON DETAILED MODELS
     基于详细模型的HVDC系统非线性输出跟踪控制器
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     Simulation of Control Strategy and Experiment Research on VSC-HVDC System
     VSC-HVDC系统的控制策略仿真及实验研究
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     Based on the mathematical model of HVDC Light, the theory of independent control on active and reactive power is presented in this paper, and then the possibility of the decoupled control is analysed.
     在轻型HVDC稳态模型的基础上,给出了轻型HVDC系统有功无功独立控制的基本原理,并在此基础上对轻型HVDC系统有功无功解耦控制可行性进行了定性分析。
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     system).
     系统)。
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     SYSTEM
     系统
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     The on Site Test of ZhouShan HVDC Project
     舟山HVDC系统的现场调试
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     Neural Network Based Fault Diagnosis in HVDC System
     基于神经网络的HVDC系统故障诊断
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  hvdc system
The results of both simulations based on PSCAD and experiments on a 30 kVA HVDC system prove that the proposed digital control system is stable and efficient for eliminating the harmonics.
      
The feedback-gains are computed to assign the closed-loop eigenvalues of the HVDC system at any specified distinct modes and simultaneously minimize an appropriate linear quadratic (LQ) performance index.
      
The developed HVDC system makes the rectifier station to control the instantaneous active (real) power through the HVDC voltage link, whereas the inverter station controls the instantaneous reactive (imaginary) power generation.
      
A complete model of a 100?MW, 33?kVac, 50/60?Hz, 24-pulse HVDC system was implemented in the electromagnetic transient program (EMTP/ATP).
      
The method is demonstrated and the advantages are indicated by means of an example network consisting of a HVDC system.
      
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A new method for calculating noncharacteristic harmonics in 12-pulse HVDC system is presented in this paper. The rectifier, DC transmission line and invertor are considered as a whole. The kernel of the method is that the time domain solutions of all variables are found by simulating 4-5 working states of HVDC system, then the results of harmonic analysis are obtained by the Fast Fourior Transformation(FFT) algorithm. The method can be used to analyse the harmonics of HVDC system which operates at irregular...

A new method for calculating noncharacteristic harmonics in 12-pulse HVDC system is presented in this paper. The rectifier, DC transmission line and invertor are considered as a whole. The kernel of the method is that the time domain solutions of all variables are found by simulating 4-5 working states of HVDC system, then the results of harmonic analysis are obtained by the Fast Fourior Transformation(FFT) algorithm. The method can be used to analyse the harmonics of HVDC system which operates at irregular conditions, including the unbalanced voltages and/or impedances of AC system, the unbalanced transformer impedances and random errors in trigger pulses, etc…. As a special case, the presented method can also be used for the calculation and analysis of the characteristic harmonics.

本文建立了用于计算12脉动HVDC(高压直流)系统非特征谐波的新方法。该方法将整流站、直流线路和逆变站作为一个整体统一考虑。该方法通过模拟HVDC系统的运行工况,求解状态方程及输出方程,得到各量的时域解,然后采用快速付氏变换(FFT)技术而得到谐波分析结果。本方法可用于考虑12脉动HVDC系统在各种不完善条件下的谐波计算分析,包括:交流系统电势和阻抗的不平衡;换流变压器阻抗的不平衡,触发脉冲具有随机误差等。作为其特例,本方法同样可以用于特征谐波的计算和分析。

Power modulation of HVDC systems can improve the damping of osoillation in AC/DC power systems, and unified modulation of active and reactive power of HVDC system can result in better improvement of system damping. A new AC/DC multimachine power system analysis model is introduced and used to analyse the damping behaviour of AC/DC power systems. The problems of power modulation and unified active and reactive power modulation of HVDC systems in multimachine AC/DC power systems are studied

本文给出了一种新的交直流多机电力系统分析模型,用其分析了交直流系统的阻尼特性。文中还研究了多机交直流系统中,HVDC系统功率调制及有功、无热联合调制问题。

The 2-nd poler line voltage resonances and the 6-th return line voltage resonances occured in Zhou-shan system test have been discussed. The origination and distribution of the DC side harmonic current have been calculated. The suggestions that the resonance overvoltage mentioned above can be suppressed by DC filters located at both terminations of DC line have been made. Preliminary estimation on the effects and parameters of 6-th harmonic filters has been done.

讨论了舟山HVDC系统调试中发生的极线2次电压谐振及回线6次电压谐振的原因,计算了DC侧谐波电流的发生及其分布,建议在线路两端加装DC滤波器抑制上述过电压,初步计算了6次滤波器参数及加装后的效果。

 
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