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hvdc换流器
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  hvdc converter
     Study on Impedance-frequency Characteristic of HVDC Converter
     HVDC换流器的阻抗频率特性
短句来源
     (3) The impedance-frequency characteristic of HVDC converter and harmonic instabilityHarmonic instability has already led to several HVDC project shutdown in the pastdecades, while the impedance–frequency characteristic is important for analysis and solve thisproblem.
     (3) HVDC换流器阻抗频率特性与谐波不稳定谐波不稳定曾引起多个直流工程的闭锁,而HVDC换流器的阻抗频率特性是分析和解决谐波不稳定的一个重要因素。
短句来源
     A Novel Method——Combination and Separation of Nodes for Digital Simulation of HVDC Converter
     HVDC换流器新的数字仿真方法——节点合并—分离法
短句来源
     The influence of HVDC converter controls on the mode damping of sub-synchronous oscillations (SSO) in a AC/DC power system is investigated in this paper by using eigenvalue analytical method.
     采用特征值分析法研究交直流电力系统中HVDC换流器控制对次同步振荡(SSO)模态阻尼的影响。
短句来源
     The paper presents a method to determine equivalent DC impedance and equivalent AC impedance of HVDC converter viewed respectively from DC side and AC side based on switching function theory.
     文中提出了基于开关函数理论的HVDC换流器直流等值阻抗和交流等值阻抗计算方法。
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  “hvdc换流器”译为未确定词的双语例句
     Nonlinear converter control for HVDC systems based on general dynamic model
     基于一般动态模型的HVDC换流器非线性控制
短句来源
     The detailed modeling of controls and power system elements is required in the transient performance study of HVDC(High Voltage DC transmission) converter using EMTP/ATP.
     基于EMTP/ATP程序研究高压直流输电(HVDC)换流器的暂态特性,需要建立控制及电气元件的详细模型,同时,在进行仿真研究时,尤其是当HVDC换流器与弱交流系统相联时,需特别注意电磁暂态过程本身所具有的复杂特性。
短句来源
     COMPUTATION OF HARMONIC POWER FLOW OF POWER SYSTEWS WITH MULTI-HARMONIC SOURCES
     多谐波源电力系统谐波潮流计算(Ⅱ)HVDC 换流器谐波模型
短句来源
     (2) Small signal stability analysis of HVDC based on quasi-steady modelOn the basis of HVDC quasi-steady model, different state equation of small signalmodels of common-used control system are elaborated.
     (2) HVDC的小信号模型及稳定性分析在HVDC准稳态模型的前提下,针对HVDC换流器的常见控制模式,推导了各自的小信号状态方程。
短句来源
     (5) Optimized grounding resistance configuration against dc bias of transformerThe amplification of harmonic and bus voltage distortion in commutation bus bytransformer dc bias will deteriorate the operation condition and easily lead to harmonicinstability.
     (5)抑制变压器直流偏磁的接地电阻配置方法直流偏磁引起的系统谐波增大和换流母线电压畸变会恶化HVDC换流器的运行环境,导致发生谐波不稳定等。
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  相似匹配句对
     Study on Impedance-frequency Characteristic of HVDC Converter
     HVDC换流器的阻抗频率特性
短句来源
     NONLINEAR CONTROL OF THE CONVERTER IN HVDC SYSTEMS
     HVDC系统中换流器的一般非线性控制
短句来源
     Voltage Stability Analysis of HVDC Systems
     HVDC系统电压稳定性分析
短句来源
     BRIEF INTRODUCTION TO HVDC LIGHT AND SVC LIGHT
     轻型HVDC和SVC简介
短句来源
     A Fuzzy Controller of Characteristic Harmonics of Converter
     换流器特征谐波的模糊控制
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  hvdc converter
It does not need any communication channel to the control of the main HVDC converter stations.
      
The conventional method of calculating high-voltage direct current (HVDC) converter commutation angles can result in very inaccurate results if the ripple of the DC is fairly high, or the HVDC link consists of capacitor commutated converters (CCC).
      
Although reactive power does no useful work, it is inherently required for operating any alternating-current power system or HVDC converter.
      
Figure 2.1 shows the classical construction of a HVDC converter plant.
      
Functionally, the VFT is similar to a back-to-back HVDC converter.
      
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The harmonic model of HVDC converter suitable for the computation of har- monic power flow with multi-harmonic sources is worked out.Given the 3-phase A.C.voltages and their harmonic voltages,the harmonic currents poured in to h e A.C.system from the converter are calculated.The program is made and the ontrast calculations between the harmonic currents with and without the 5th har- monic voltage on the converter bus are carried out.

本文推导了适合于多谐波源谐波潮流计算的 HVDC 换流器谐波模型。在已知交流电压及谐波电压的条件下,推导了换流器向交流网注入的谐波电流。编制了程序,并对换流器节点电压中5次谐波存在与否作了对比计算。

This paper introduces the use of an RTDS for the verification of HVDC control and protection.For high accuracy firing and high frequency simulation requirements,a new approach for an Advanced Hybrid HVDC Real- Time Sim ulator using classical physical m odels for the converter section in combination with a complex fully digital AC and DC power system simulator im plem ented on RTDS is developed.The realization and performance verification of its technology are described. This hybrid sim ulator has been chosen...

This paper introduces the use of an RTDS for the verification of HVDC control and protection.For high accuracy firing and high frequency simulation requirements,a new approach for an Advanced Hybrid HVDC Real- Time Sim ulator using classical physical m odels for the converter section in combination with a complex fully digital AC and DC power system simulator im plem ented on RTDS is developed.The realization and performance verification of its technology are described. This hybrid sim ulator has been chosen for Chinese Tian- Guang HVDC project tests.Based on the testing of HVDC control and protection,new m odels for this hybrid simulator set- up are implemented and verified by tests.Compared with EMTDC com puter simulations,the control and protection performance is verified and the results are also given.

介绍使用实时数字仿真器 RTDS对 HVDC控制和保护系统进行测试。为获得高精度的阀触发脉冲和高频下的仿真性能 ,采用了先进的混合 HVDC实时仿真器。其中 ,HVDC换流器采用传统的物理模拟装置 ,直流系统和并联的复杂交流系统均采用实时纯数字仿真 ,由 RTDS仿真器实现。该混合实时仿真器被选择用于中国天—广 HVDC工程。基于 HVDC控制和保护系统的测试 ,文中给出了新的混合实时仿真器的结构实现方法和性能校验结果。与 EMTDC计算机仿真结果比较 ,HVDC控制和保护系统的性能得到了校验。

The influence of HVDC converter controls on the mode damping of sub-synchronous oscillations (SSO) in a AC/DC power system is investigated in this paper by using eigenvalue analytical method. Taking the advantage of the numerical calculation and data visualization functions in MATLAB, the curved surface of SSO mode damping to parametric plane of the rectifier control is calculated and drawn in three-dimensional space. Furthermore, an approach is proposed to visualize the parametric stability region of SSO. For...

The influence of HVDC converter controls on the mode damping of sub-synchronous oscillations (SSO) in a AC/DC power system is investigated in this paper by using eigenvalue analytical method. Taking the advantage of the numerical calculation and data visualization functions in MATLAB, the curved surface of SSO mode damping to parametric plane of the rectifier control is calculated and drawn in three-dimensional space. Furthermore, an approach is proposed to visualize the parametric stability region of SSO. For every SSO mode, an optimal damping ridgeline is discovered and damping variation with gain and time constant of the rectifier control is not absolutely monotonous. Decrease of time constant and increa.se of gain can make SSO modes depart from the parametric instability region to the parametric stability region or far from the former. The trend is beneficial to robust stability, however, not always beneficial to mode damping.

采用特征值分析法研究交直流电力系统中HVDC换流器控制对次同步振荡(SSO)模态阻尼的影响。利用MATLAB的数值计算和数据可视化能力,计算并在三维空间绘制了SSO模态阻尼相对于整流器控制参数平面的轨迹曲面,并提出一种可视化描述SSO参数稳定域的巧妙方法。发现各SSO模态都有一条最佳的模态阻尼脊线,阻尼不是分别随整流控制器增益和时间常数单调变化的。因此,减小时间常数和提高增益可以从参数不稳定域到达参数稳定域或者远离参数不稳定域,有利于提高鲁棒稳定性,但并不总是有利于改善SSO模态阻尼。

 
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