在特高压直流输电中换相失败也是主要的故障。
Commutation failure is one of the most common failures for the high voltage direct current transmission system.
换相电抗是高压直流输电系统中的一项重要技术参数。
Commutated reactance is an important parameter in HVDC transmission system.
本文讨论了直流输电用交流滤波器的选型和参数的优化。
Selection of the type of AC filters used in HVDC Projects and optimization of their parameters are discussed.
直流输电的潮流可被调制以阻尼振荡并提高功率承载能力。
The DC transmission power flow can be modulated to dampen the oscillations and increase their power-carrying capability.
此方案设计合理，对直流输电产品的设计有一定参考价值。
This scheme is reasonable in design, and has a certain reference value to the design of the products of direct current transmission.
高压直流输电系统在一定条件下可能引发系统的次同步振荡。
The HVDC transmission system may lead to subsynchronous oscillation under certain circumstances.
滤波装置的设计是高压直流输电(HVDC)的关键技术之一。
The design of filtering equipments is one of the key technologies of the High Voltage Direct Current (HVDC) system.
控制保护系统的运行情况直接影响着直流输电系统的安全稳定运行。
The stable and secure operation of an HVDC transmission system is influenced by the operating performance of its control and protection system.
未来多个直流输电系统落点于上海地区，将构成多馈入直流输电系统。
In future, several HVDC systems will set in Shanghai, which is expected to create a multi-inked HVDC system.
换流站直流滤波装置的设计关系到高压直流输电系统的安全与经济性。
The design of filtering equipments at dc side of the converter substations is relative to the security and economy of the high voltage direct current (HVDC) transmission system.
因此对高压直流输电系统及其控制器参数优化的研究是十分必要和重要的。
So it's quite necessary to study HVDC system and the optimization of parameters of the control system.
背靠背高压直流输电(HVDC)系统已经在交流系统连网中得到了应用。
这有益于在研究区域电网互联时，充分考虑并发挥直流输电系统应有的作用。
It is useful for considering the functions of a HVDC link in studying interconnection of regional power grids in our country.
分析表明这种控制方法提高了交直流输电系统的稳定性及控制系统的鲁棒性。
Analytical results show that using the presented method the robustness of control system and the stability of AC power transmission system are improved.
蔡家冲(宜都)换流站是三沪直流输电工程中的整流站，其建设意义十分重要。
Because Caijiachong (Yidu) converter station is the rectification station of Sanhu DC power transmission project, it is vital to the whole project.
提出了一种适用于高压直流输电系统快速灵活控制的在线模糊神经直流控制器。
This paper describes an on - line controller for the fast and flexible control of the HVDC transmission system based on fuzzy logic and ANN.
提出了一种新的故障跟踪估计器来诊断高压直流输电(HVDC)系统中的故障。
A novel fault tracking approximator for fault diagnosis scheme of high voltage direct current transmission (HVDC) system is proposed.
但直流输电对绝缘子的防污秽性能要求高，对其金属附件(铁帽和钢脚)腐蚀厉害。
While DC power transmission requires high anti-fouling property for insulators and causes serious corrosion to their metal attachments (iron cap and steel foot).
对该问题的研究解释了由高压直流输电系统控制器诱发汽轮发电机组轴系扭振的机理。
Through studying, the mechanism of the subsynchronous torsion oscillation caused by the controller of HVDC system has been understood.
对控制领域的新成果——非线性PID方法应用于直流输电调制控制器做了较为系统的研究。
The application of nonlinear PID method, which is a latest achievement in the field of control technology, in high voltage direct current (HVDC) modulation controller is studied.
轻型高压直流输电是在电压源换流器和绝缘栅双极晶体管基础上开发出来的一种新型输电技术。
The light HVDC transmission is a new power transmission technology based on the voltage source converters(VSCs) and IGBT power semiconductors.
基于界面图形化方式，提出以扩充临界比例法为基础的直流输电系统PID控制器参数优化方法。
Using interface graphic scheme, this paper presents the parameter optimization method for DC transmission PID controller based on expanding critical ratio method.
特高压直流输电具有送电容量大、送电距离远等优点，在今后的能源流动中具有不可替代的地位。
The UHVDC power transmission possesses such advantages as high transmission capacity and long working distance, so its position can not be replaced in the electric energy flowing in the future.
该方法基于微分几何理论，并将直流输电系统等效为两个分别连接在整流侧和逆变侧的变导纳支路。
The approach proposed in this paper is based on differential geometric theory, and the HVDC systems are taken as a variable admittance connected at the inverter or rectifier ac bus.
直流输电的控制和保护二次系统是国产化的重点，而脉冲发生器是控制和保护系统中的关键技术之一。
The heart of HVDC link is its control and protect system, and my work is focused on firing-pulse generator―an important part in the control and protect system .
高压直流输电(HVDC)由于其许多独特的优点，在远距离输电和大型互联电网中起着很重要的作用。
Due to its distinct advantages, HVDC plays an important role in long distance power transmission and large-scale interconnected power systems.
基于电路基本理论知识，推导出多馈入交、直流并联的高压直流输电系统耦合导纳和换相电压关系表达式。
Based on electrical circuit theory, the formulation of the relation between mutual admittance and converter commutation voltage of the multi-infeed HVDC system was given.
基于故障树法对同一系统的分析结果验证了GO法在特高压直流输电系统可靠性分析中的可用性与正确性。
The fault tree analysis method was used to analyze the same system, and the analysis results completely accorded with the GO methodology.
对基于电压源换流器(vsc)的直流输电(VSC - HVDC)系统的起动过程控制策略进行了研究。
The control strategy of start-up process of HVDC based on voltage source converter (VSC-HVDC) is discussed.
分析了高压直流输电（HVDC）系统的结构和原理，建立了一个6脉冲桥HVDC系统模型并进行了仿真。
This paper analyzes the structure and principle of high voltage DC transmission(HVDC)system, builds a model of 6-impulse bridge HVDC system and makes a emulate on it.
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