1) secondary frequency regulation
二次调频
1.
This paper describes the relationship between the hydro-turbine governor and the grid load frequency control, analyzes the functions, the static and dynamic characteristics of the governor in grid primary and secondary frequency regulation.
文中叙述了水轮机调速器与电网负荷频率控制之间的关系,分析了调速器在电网一次调频、二次调频中的作用、静态特性和动态特性;通过建模、仿真及现场试验,提出了机组并联于大电网工况下的调速器PID参数整定范围和应有的机组功率控制模式。
2.
Through the software primary and secondary frequency regulation, the system complete the frequency regulation work in isolated power grid and guarantee the operation stabilization of the plant.
本文介绍了DEH系统功能原理,根据大连西咀热力有限公司孤网运行特点,采用软件一次调频和二次调频两种方式,成功地完成了孤网运行的调频任务,达到了稳定运行的目的。
2) primary frequency modulation
一次调频
1.
Function design of primary frequency modulation and performance test for 215MW thermal power generating set;
215MW火电机组一次调频功能设计及性能试验
2.
Analysis for Primary Frequency Modulation of Turbo-generator Unit;
汽轮发电机组一次调频分析
3.
Application and realization of primary frequency modulation function for thermal-power generating unit;
火电机组一次调频功能的实现及应用
3) primary frequency regulation
一次调频
1.
Control modes of primary frequency regulation of DEH for 1 000 MW thermal units;
1000MW火电机组DEH一次调频控制方式应用与探讨
2.
Improvement and optimization of automatic generation control and primary frequency regulation for fixed fossil-fired units;
混合燃烧机组自动发电和一次调频控制系统完善与优化
3.
Joint application of CCS and DEH to primary frequency regulation;
CCS和DEH协同一次调频的运用
4) primary frequency control
一次调频
1.
Field test and strategy analysis of primary frequency control in Yunnan power grid;
云南电网一次调频试验工作现状及策略分析
2.
Function of the primary frequency control in power system and explanation of the technical parameters request in North China Grid are introduced.
介绍了一次调频在电力系统中的作用及华北电网对一次调频技术指标要求。
3.
There is a loop of pressure in DEB system,so primary frequency control is hold-up.
华北电网机组一次调频由DEH+CCS方式实现,而DEB协调方式由于存在速度级压力回路,故对一次调频存在抑制作用。
5) Primary frequency
一次调频
1.
Analysis About a Turbine Trip Accident Caused by the Setting of Inappropriate Parameters in Primary Frequency Regulation;
一起一次调频设置不当引致机组跳闸事故分析
2.
Solutions for primary frequency regulation and its influence on unit main parameters;
一次调频的实现方案和对机组主要参数的影响
3.
The detailed configuration of primary frequency modulation for large thermal power plants as well as note-worthy points was presented.
通过对唐山热电公司300 MW机组一次调频功能的具体实现详细介绍。
6) secondary mixing
二次混频
1.
A simple phase measurement technique of high resolution, the secondary mixing, is presented.
给出一种可用于纳米精度测量的二次混频测相技术，着重设计了其中的频率合成器。
2.
A combination method based on secondary mixing and MTD(Moving Target Detection)processing is proposed for high-speed targets detection in linear frequency-modulated continuous wave(LFMCW)radar.
针对LFMCW雷达高速运动目标的检测问题,本文提出了一种二次混频与MTD处理相结合的方法。
3.
The theory and scheme of the Doppler allowance extension using the method of secondary mixing were offered and validated by simulation.
在对伪码调相引信多普勒容限扩展必要性进行分析的基础上,研究了多普勒容限与引信主要参数间的关系,提出了用二次混频的方法扩展多普勒容限的理论和设计方案,并通过仿真进行了验证。
补充资料：调频-调频遥测系统
采用调频-调频二重调制方式的频分制遥测系统,简称FM-FM遥测系统，属于模拟式遥测系统。FM-FM遥测系统的抗干扰能力强，遥测精度也比较容易得到保证。模拟式遥测系统大都采用这一类系统。下图为 FM-FM遥测系统的框图。各路被测量经变换器变换成电压信号后去控制各路副载波振荡器。副载波振荡器一般采用压控振荡器（即电压控制的振荡器），其振荡频率正比于控制电压,这样就实现了第一次调频。为了防止路际干扰,各路已调副载波先通过低通滤波器，滤去高次谐波，再送到相加放大器形成多路信号，并通过信道调制器对载波调频，这样就实现了第二次调频。已调频的载波由发射天线发送出去。接收端收到遥测信号后先通过解调器解调出多路信号，再送往各分路的带通滤波器，即分路滤波器，把各路已调副载波分离开来。分离出来的已调副载波送到相应的分路解调器，进行第二次解调，就可以得到所传送的模拟信号。美国对 FM-FM遥测系统已经实现了标准化、模块化、系列化。广泛应用模拟集成电路制成标准部件，提高了系统的可靠性和适应性。
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