This paper mainly discusses the control and protection system for the 20kw VSCF (Variable Speed Constant Frequency) Wave Power Electric Station.
本文着重介绍了20千瓦变速恒频波力发电系统的控制功能和保护体系。
Because of the current on the shunt reactor, traditional traveling wave differential protection cannot be applied to transmission line with shunt reactor.
由于并联电抗器两侧的电流发生变化，传统的行波差动保护无法应用于带并联电抗器的输电线路。
Based on the actual work, the noteworthy problems in invading wave protection of substation are discussed in brief.
结合实际工作，浅谈了在变电站入侵波的防护方面应当引起注意的问题。
The problem of lightning progressive wave protection for electrified railway traction substation of our country has been studied in this paper.
本文对我国电气化铁道牵引变电所的雷电进行波保护问题进行了研究。
Artificially triggered lightning has practical use in the study of lightning strike mechanisms, lightning hazard and protection as well as in the propagation of radio wave and plant mutation breeding.
人工引发闪电在研究雷击机理、雷击效应、雷电防护以及电波传播、植物诱变育种等方面也具有广泛的应用前景。
Traditional traveling wave differential protection needs to transmit large amount of real-time high-frequency sampling data, which is difficult for current telecommunication methods.
但传统的行波差动保护要求实时传送所有高速采样数据，目前的通信手段难以胜任；
Based on the analysis of the traveling wave with wavelet transform, this paper presents a new method of traveling wave differential protection based on the wavelet transform.
文中在对行波的小波分析的基础上，提出了基于小波变换的行波差动保护原理和算法。
The classic analysis of high-frequency (HF) protection only takes account of the channel delay effect of HF signal, neglects the delay effect of electric traveling wave.
高频保护传统分析方法仅考虑高频信号在通道中的延时效应，没有分析电气量的行波延时效应。
Experimental raw data can be derived from the simulation data of the upper computer software, the recorded wave data and many kinds of data generated by protection tester.
实验原始数据可来源于上位机模拟的数据、现场录波数据和由保护测试仪产生的多种模拟数据。
The basic principle of new types of protection which present relay protection experts have proposed, such as shape wave protection, non-channel protection and so on, is introduced.
介绍了当前继电保护专家们提出的行波保护、无通道保护等新型保护的基本原理。
And the wave spectrum characteristics of the typical electromagnetic pulse experimental current is studied in order to provide the basis for electromagnetic pulse protection.
并研究了典型电磁脉冲试验电流波的频谱特性，为进行电磁脉冲防护提供依据。
The whole system is composed of number wave filter experiment module, protection measurement experiment module and protective component action characteristic experiment module.
系统功能由数字滤波试验，保护算法试验和保护元件动作特性试验三大块组成。
A directional protection based on traveling wave current polarity comparison which is implemented by detecting the polarity of current wavefront of traveling wave is presented.
文章提出了基于检测行波电流波头极性的行波电流极性比较式方向保护。
Real time informations of Marine conditions, such as wave height, direction and period to beach protection and the actions on the sea, drilling platform or ship, are very important.
海洋状态的实时信息，象海浪波高、方向和周期对于海岸保护、离岸海上活动，象钻井平台或船只都具有重要的意义。
However, the theory and technology of existing protection based on travelling wave is imperfect.
然而现有行波保护的保护原理还不成熟，技术还不完善。
The research achievements will establish theoretic and technical foundation for the future development of traveling wave protection devices.
该研究成果将为下一步开发行波保护装置奠定理论和技术基础。
DC Variable AC, quasi-sine wave. Automatic protection, safe and reliable. Small size, light weight and high efficiency. Pollution-free, maintenance-free, easy to use.
直流变交流，准正弦波。全自动保护，安全可靠。体积小，重量轻，效率高。无污染，免维护，使用方便。
Proceeding from the effect of harmonic wave on the heating of electric motors , the author analyses the corresponding microcomputer protection algorithm and some relevant questions.
从介绍谐波对电动机发热的影响出发，分析了相应的微机保护算法及有关问题。
To explore the effects of long-wave ultraviolet (UVA) on lipid peroxidation and collagen synthesis of rats' skin and sunscreen's protection.
探讨长波紫外线(uva)对大鼠皮肤脂质过氧化和胶原合成的影响及防晒化妆品的防护效果。
The protection logic assistant analyzing unit distills and opens wave file to reproduce protection logic action process in the fault by analyzing wave time-sequence graph.
数字化保护逻辑分析单元包含保护逻辑记录单元和保护逻辑辅助分析单元。
The paper introduces how to prepare the sample of multi-wave band laser protection plastics based on PMMA and test its property.
本文以PM MA为基质制备了多波段激光防护塑料样品，对其性能进行了测试。
A novel fault phase selector by fault component of compensation voltage based on traveling wave is presented for high-speed protection.
针对传统电流突变量和电压突变量选相元件不能同时满足强弱电源系统侧保护要求的缺点，提出一种新的突变量选相原理。
The main circuit is consisted of 18 thyristors circuit and protection circuit. With the help of control subsystem, it can get the output of low frequency voltage (current) with the shape of sine wave;
主回路采用由18个晶闸管组成的三相零式电路，并辅以晶闸管的保护电路，通过控制可以得到低频正弦波的电压（电流）输出；
In power system, it can excite partial parallel resonance or serial resonance, enlarge the harmonic wave, trigger relay protection system in error and disturb electric power energy metering equipment.
在电力系统，它可以刺激局部并联谐振或串联谐振，放大谐波，引发继电保护系统误差和扰乱电力能源计量设备。
The current-leakage protection technology of trolley network system based on asymmetric square-wave method;
本文叙述了煤矿井下直流架线电网漏电保护的原理及应用。
This article from the RF wave protection of EED, carries on the analysis to design process of EED.
本文是从电火工品防射频的角度，对电火工品的设计过程进行分析。
In order to make calculation of the lightning protection on ultra high voltage (UHV) line, a new tower model, namely multi-wave impedance model was constructed.
为了超高压输电线路防雷计算的需要，建立了新的杆塔模型，即多波阻抗模型。
The erosion protection project, the wave resistance project and the control and diversion project in which soft materials are used can control bank collapse.
采用柔性材料的防冲工程、防浪工程及控导工程可控制塌岸。
The wave-proof sleeve is a kind of shielded copper braiding sleeve for preventing the interference of electric wave or playing the effect of protection.
防波套是用于防止电波干扰或起保护作用的屏蔽铜编织套。
The wave-proof sleeve is a kind of shielded copper braiding sleeve for preventing the interference of electric wave or playing the effect of protection.
防波套是用于防止电波干扰或起保护作用的屏蔽铜编织套。
应用推荐