1) double-pole HVDC
双极HVDC
1.
This paper introduces the double-pole HVDC transmission system and the double terminal traveling-wave fault location method which is based on the wavelet modulus maximum theory.
为准确定位双极HVDC输电线路故障,介绍了基于小波模极大值理论的双端D型行波故障测距方法及该方法在双极HVDC输电系统中的应用并用PSCAD和MATLAB软件仿真分析双极HVDC系统,得到故障点初始行波波头分别到达整流侧母线和逆变侧母线的时刻,从而算出故障点到达两侧母线的距离,完成故障定位。
2) multi-infeed HVDC
多馈入HVDC
1.
A wide-area measurement system(WAMS)based fuzzy adaptive coordinative damping controller is developed for multi-infeed HVDC system.
结果表明:该阻尼控制器能快速、有效地阻尼区域间振荡,提高交流联络线的传输能力,对不同的网络结构具有鲁棒性,可明显改善多馈入HVDC系统的稳定性。
2.
In this paper,using the combination of feedback linearization approach and linear H∝ controlling theory,basing on the model of a multi-infeed HVDC,a nonlinear robust control law for multi-infeed HVDC is designed in detailed and discussed the characteristic and the effect.
多馈入HVDC越来越成为系统规划和系统运行分析研究的重点课题。
3) HVDC system
HVDC系统
1.
The control manner of HVDC system often plays an important role in the dynamic stability of an AC DC power system.
文中利用复数力矩分析方法推导了HVDC系统的电磁力矩公式 ,用以定量地确定不同控制回路和控制方式下HVDC系统的动态稳定性 ,为进一步设计和改进HVDC的控制系统提供了理论依据。
2.
However, HVDC system has the possibilities to cause subsynchronous torsional vibration interaction with turbine generator shaft mechanical system.
本文将HVDC系统引发的次同步振荡问题作为研究重点,其主要内容包括以下几个方面: (1)提出了一种基于模态分离设计法和最佳相位补偿的HVDC系统附加次同步阻尼控制器(SSDC)设计方法。
5) HVDC localization
HVDC国产化
6) multiterminal HVDC
多端HVDC
1.
This paper summarizes the characteristics as well as the development and application status of HVDC,the localization status and the application prospect of HVDC project in China,and the development and application status of new HVDC technology,such as multiterminal HVDC,HVDC light and capacitor commuted converter.
本文对HVDC的特点及其发展应用情况,我国HVDC工程建设的国产化情况,HVDC在我国的应用前景,以及多端HVDC、轻型HVDC和电容换相换流器(CCC)等新型HVDC技术的发展应用情况进行综述。
补充资料：“质子-电子偶极-偶极”质子弛豫增强
“质子-电子偶极-偶极”质子弛豫增强
物理学术语。原子核外层中不成对的电子质量小，但磁动性很强，可使局部磁场波动增强，促使氢质子弛豫加快，从而使T1和T2缩短，这种效应即为PEDDPRE。过渡元素和镧系元素大部分在d和f轨道有多个不成对电子，所以其离子往往具有PEDDPRE，可用来作顺磁性对比剂，如钆(Gd)。Gd在外层有7个不成对电子，具有很强的顺磁性。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条